Top 35 How Do You Kill Lantana The 187 Top Answers

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Cut stems off at about 15 cm from the ground. Apply herbicide to the cut surface of the stump within 15 seconds. Treat every cut stem because lantana regrows vigorously from untreated stems.Herbicides that contain the active ingredients like Aminopyralid and Fluroxypyr are also very effective against Lantana. This combination of products is of course effective against other woody weeds as well. The active ingredient Aminopyralid is what makes these two products particularly effective.Overgrown plants can be pruned back to about a third of their height (and spread if necessary). You can also lightly trim lantana plants periodically throughout the season to stimulate new growth and encourage flowering. This is usually done by trimming lantana tips back about one to three inches (2.5 to 7.5 cm.).

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What is the best chemical to kill lantana?

Herbicides that contain the active ingredients like Aminopyralid and Fluroxypyr are also very effective against Lantana. This combination of products is of course effective against other woody weeds as well. The active ingredient Aminopyralid is what makes these two products particularly effective.

How do you remove overgrown lantana?

Overgrown plants can be pruned back to about a third of their height (and spread if necessary). You can also lightly trim lantana plants periodically throughout the season to stimulate new growth and encourage flowering. This is usually done by trimming lantana tips back about one to three inches (2.5 to 7.5 cm.).

Why is lantana a problem in Australia?

Why is lantana a problem? Lantana forms dense thickets that exclude native species, leading to its complete dominance of the understorey and eventually the canopy.

Is lantana supposed to be cut back?

In areas where lantana is winter hardy but dies to the ground, pruning lantana stems in spring is vital to maintaining plant health. Cut stems back to 6 or 12 inches tall. After pruning lantana, water and fertilize to encourage new growth.

Will round up kill lantana?

Choosing weed killer for Lantana plants

The best weed killer for Lantana plants is a systemic weed killer. This means that the herbicide is absorbed by the whole plant, killing the roots, leaves and shoots. Roundup is applied to the leaves of the weed and works down to the roots, getting rid of the weed entirely.

What makes lantana so invasive?

It layers – that is, it produces roots from where the plant touches the ground, and that produces new plants. But more importantly it’s propagated by seed. These are ingested by birds and foxes, which spread them through their droppings. This means it can spread over a distance very quickly.

Why is lantana a problem?

Citrus growers despise it as it is a serious economic pest to their industry. In many frost-free regions it has become an invasive nuisance, crowding out grazing lands and agricultural areas. Lantana is toxic for most livestock to graze and it is also poison for rabbits and their kin too.

Do lantanas spread?

Trailing lantana (Lantana montevidensis) is a low-growing, spreading plant that produces a profusion of lavender, purple or white flowers which also attract butterflies. It is good for baskets or training into standards. Flower clusters are composed of a number of small, tubular flowers.

Is lantana plant poisonous?

All lantana should be treated as poisonous to stock. Red flowered varieties are thought to be the most toxic but some white and pink flowered varieties can also be highly toxic. Most lantana poisoning occurs when stock unfamiliar with the plant are introduced to areas where lantana is found.

Is lantana good for anything?

According to a published medical review on medicinal properties of lantana, its leaves are used for treating malaria, chickenpox, asthma, ulcer, swelling, eczema, tumour, high blood pressure, bilious fever, sores, measles, fevers, colds and high blood pressure.

Does lantana have deep roots?

During its evolution, lantana developed several drought-survival strategies, giving it the ability to endure dry times. It has an extensive root system that can efficiently capture whatever moisture may be near it.

Can you burn dead lantana?

Although Lantana is a pretty plant and certainly very easy to grow in a warm climate, some consider the plant to be a noxious, invasive weed. Remove it promptly and carefully through the use of herbicides or by digging it out. Never burn it because the smoke is toxic.

Will lantana come back every year?

Each first frost they die out, the plants are cut back to the ground level and every year they regrow. They are a place for butterflies, bees and hummingbirds to visit and for you to enjoy watching them. Lantana is in a group of about 150 species in the verbena family.

Do hummingbirds like lantana?

Lantana. A favorite of butterflies and hummingbirds alike, lantana offers colorful red, yellow, orange, pink, lavender, or white flowers. These heat-loving, drought-resistant plants will fit well in sunny spots in your garden.

Are lantana poisonous to dogs?

Lantana (Lantana camara) All parts of this invasive shrub are poisonous, especially the leaves and green berries. This plant can be fatal to children, dogs and horses. Oleander (Nerium oleander) This entire shrub is poisonous, including the smoke.

Can you poison lantana?

How long does it take for metsulfuron to work?

Metsulfuron-based herbicide products will stay in the soil for several weeks after application. You should see improvement in your lawn health in 1 to 2 weeks and most weeds will be cleared after 3 weeks. Some weeds are more resilient and may require another application in 4 to 6 weeks.

What does associate herbicide kill?

It is labelled to control broadleaf weeds and some annual grasses in pastures and industrial areas. It is very effective on weeds that include bulbs and tubers. It is recommended to only spot spray weeds as it can kill different types of plants as well as the targeted weeds.

Can you mix glyphosate and triclopyr?

A mixture of glyphosate plus triclopyr is a useful standard mix for managing most vegetation targets. It has broad activity, and low risk to non-targets, and is economical both in terms of per-acre cost and container size, for the commercial applicator or the individual landowner.

Lantana Removal Queensland The Truth about Poison Lantana

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Lantana is a scrambling shrub with colourful flowers. It is a widespread weed in coastal areas.

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How does this weed affect you?

Lantana:

is poisonous to animals and humans

invades native grassland and pastures

invades eucalyptus and pine plantations

fuels bushfires

can restrict access to bushland and waterways

costs land managers more than $22 million each year to control.

Lantana provides some shelter for native fauna.

Human poisoning

All parts of the plant are poisonous if eaten and can cause:

vomiting

diarrhoea

weak muscles

breathing problems

death.

Touching lantana can irritate skin and eyes.

What to do if a person is poisoned:

If the patient is unconscious, unresponsive or having difficulty breathing dial 000 or get to the emergency section of a hospital immediately.

If the patient is conscious and responsive call the Poisons Information Centre on 13 11 26 or your doctor.

If going to a hospital take a piece of the plant for identification.

Livestock poisoning

All types and parts of lantana are considered poisonous to stock. Red-flowered lantana is most dangerous. Stock poisoning is common. It happens most when new animals are introduced into lantana areas and there is no other feed. Cattle used to grazing lantana-infested land are less likely to eat it.

Early symptoms of lantana poisoning include:

depression

loss of appetite

constipation

frequent urination

jaundice for 1 – 2 days

inflamed eyes with a slight discharge.

mouth area becoming inflamed, moist, and very sensitive, with a pink nose.

bare skin becoming very sensitive to light, red and swollen, or may crack, turn black, and die.

Stock usually die 1 – 4 weeks after symptoms appear. Death is slow and painful from liver and kidney failure. Some animals have heart damage.

What does it look like?

Lantana is a usually a dense shrub, although it can drop its leaves in dry times. It usually grows from 2 – 4 m high but can scramble up into trees. There are five main types with different flower colours: pink, red, orange, white and pink-edged red. Red lantana has pricklier stems and darker green leaves than pink lantana.

Stems are:

square

with short, curved prickles.

Leaves are:

rough and bright green on top

hairy and pale green underneath

with serrated edges

fragrant when crushed

in pairs, opposite each other on stems

on a short stalk

about 10 cm long

2 – 8 cm wide

egg to spearhead-shaped.

Flowers are:

in clusters

different colours depending on the type of lantana, age and location. Flowers can be pink, red, orange, white and pink-edged red

produced almost year round.

Fruit are:

6 – 8 mm in diameter

round berries

in a group

green to start

shiny, dark purple-black when ripe

with one seed per fruit.

Roots are:

shallow, mostly in the top 10 – 30 cm of soil.

Where is it found?

Lantana’s range extends from Bega Shire in southern NSW to Cape Melville in north Queensland. It is present on Lord Howe and Norfolk Islands. The main infestations are east of the Great Dividing Range in NSW and QLD.

Pink-edged red lantana grows on the:

North Coast around Kempsey, south-east of Dorrigo, Bellingen, in the Coffs Harbour and Grafton areas

Central Coast.

Red varieties grow on the North Coast, around Kempsey, Bellingen and Coffs Harbour.

Lantana is unlikely to invade new regions in NSW. It is increasing in density and invades new areas within its range.

Lantana comes from the tropical and subtropical regions of Central and South America. It was introduced to Australia in 1841 as an ornamental plant. By the 1860s it was common in Sydney and Brisbane.

What types of environment does it grow in?

Lantana can quickly colonise roadsides, power line and railway easements, river banks, fence-lines, forestry, pastures, open native woodlands and subtropical rainforest edges. Lantana can grow in steep, inaccessible areas. Lantana often invades disturbed areas where vegetation has been cleared. It’s less likely to grow in undisturbed bushland.

Lantana prefers:

warm weather with more than 900 mm annual rainfall

well-drained, fertile soils

coastal areas

altitudes up to 1000 m.

Lantana can survive periods of drought. It tolerates poor soils and sand and will grow on stony hillsides as long as moisture is available.

Lantana is slowed by:

cold weather (it stops growing when temperatures are below 5°C)

low light

some soils (waterlogged conditions, heavy clays, salt-affected).

Maps and records

Recorded presence of Lantana during property inspections (Map: Biosecurity Information System – Weeds, 2017-2022)

These records are made by authorised officers during property inspections under the Biosecurity Act 2015 . Officers record the presence of priority weeds in their council area and provide this to the NSW Department of Primary Industries. Records reflect the presence of the weed on the date of inspection.

Estimated distribution of Lantana in NSW (Map: NSW Noxious Weed Local Control Authorities, 2010)

Map shows weed distribution and density estimated by local council weeds officers in 2010.

How does it spread?

Lantana was sold as an ornamental plant.

By seed

A single plant can produce up to 12,000 fruit (and seeds) in a year. Most seeds are spread by birds and some animals that eat the fruit. Lantana seed is more likely to germinate if it has been through the gut of a bird or mammal. Seeds are also spread by water, in soil, on machinery and garden waste.

About half of seeds remain viable for up to two years in dry conditions and some may survive for five years.

By plant parts

Lantana regrows after cutting back, even if cut to the base. Cut stems grow new roots when they contact damp soil.

More information

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Control

Successful weed control takes time and follow up efforts to monitor and suppress weeds. A combination of control methods is usually needed.

To control lantana:

gradually control sections of large infestations, starting at the edges (do as much at a time as you can follow up)

dry or frosty periods are good times to work on mature lantana plants

treat regrowth or seedlings before they are 1 m high

control young plants before they are a year old to prevent new fruit and seeds

in summer, look for a flush of seedlings after rain, and kill the seedlings 1 – 3 after the rain event (lantana seeds can germinate year round but peak after summer rain).

1 – 3 months after clearing, burning or cultivation, look for regrowth or new seedlings and control them.

3 – 6 months after the end of a dry spell, look for dry lantana that appeared dead reshooting from the base, and control the regrowth

in spring, look for plants that reshoot after frost damage, and control the survivors.

Physical removal

When: year round, after rain when soil is moist.

Follow-up: within 3 to 6 months.

Hand pulling can work on small infestations, isolated plants and in steep areas that machinery cannot access. The best time is after rain when soil is moist. Wear gloves when hand pulling. Grub out roots with a mattock or hoe, then roll and haul the stems and roots away. Remove the roots and stems or the lantana will regrow.

Bulldozing or slashing can remove large bushes, and help access through infestations. Avoid disturbing large areas at any one time to avoid leaving large areas of bare ground, risking soil erosion. Revegetate and monitor bare areas for regrowth.

Slashing can be used to suppress and contain large infestations. It won’t kill the plants and follow up control of regrowth is needed. Reducing the height and density of thickets allows other treatments.

Cattle familiar with lantana can break up thickets and help create access tracks for other controls. Watch for any signs of poisoning (see Livestock poisoning above).

Pasture management and trampling by cattle

Maintaining good pasture cover helps stop lantana seedlings from growing.

Fire

Fire can reduce the height and density of lantana. Fire rarely kills lantana, and plants soon recover. Risks of using fire include:

destroying desirable vegetation

exposing soil and causing erosion.

Biological control

Since 1914, 32 biological control agents (insects and diseases) have been introduced to help control lantana. 19 have become established and help to reduce lantana in some areas.

Even if biological control agents are helping to reduce your lantana, you can still use most other control methods to reduce it more. Spraying the leaves with herbicide won’t work on plants that are affected by biological control agents, but you can still use cut-stump or basal bark methods of chemical control, or physical removal (see above and below). Burning will only be effective if there is enough fuel (i.e. enough dry leaves left on the lantana and surrounding vegetation).

There is no need to keep an area of lantana for the sake of a biological control agent.

Disease

The lantana rust (Prospodium tuberculatum) was introduced from Brazil in 2001. It attacks the pink-flowering Lantana. It appears to tolerate a range of climatic conditions.

Insects

Leaf mining beetles Uroplata girardi and Octotoma scabripennis are most effective. Larvae of both these insects feed on lantana leaves. This slows growth and reduces flowering.

The leafsucking bug Teleonemia scrupulosa also feeds on leaves.

The lantana seed fly, Ophiomyia lantanae, attacks flowers, fruit and seed. Adults feed on the flowers. Larvae feed on fruits and seeds.

These insects have already spread throughout areas they will colonise. Look for bugs or larvae on both sides of the leaves, or insects on the flowers, fruit or stems. These insects may cause damage at some times of the year and no damage at other times.

Chemical control

Pink flowered lantana is easier to control with herbicide. Red flowered varieties are harder to kill.

Spraying leaves

Small plants less than 2 m can be sprayed at any time of the year as long as they are actively growing. Stressed plants don’t take up much herbicide. Treat regrowth from burning, cutting, slashing or frost when plants are 30 cm to 1 m high.

Spray mature lantana (>2 m high) between February and the first frost.

Early morning or late afternoon is the best time to spray during Autumn.

Gas or splatter-gun

Splatter-guns use small amounts of highly concentrated herbicide. A five-litre bottle of mixed herbicide should cover about 0.2 hectares of lantana. The splatter gun:

works best on dense infestations at least 300 mm high

limits off-target plant damage

is good for hard-to-access and steep areas

can be used year round if plants are actively growing, but works best during summer

is cheaper than traditional foliar spray methods.

Spray before 10 am and after 3 pm when it’s cool. Angle the gun at 45 degrees and spray an arc over the top of the plant and down the front face. Apply 2 squirt lines per half a metre of plant height. The amount to apply will depend on the herbicide concentration. Do not spray until herbicide runs off.

Do not use the splatter-gun:

in wet weather

when there is water or dew on the plants

on spindly lantana regrowth.

Spraying stems

Applying herbicide to the stems is called ‘basal barking’. It’s effective at any time of year. Mix herbicide with diesel. Apply around all stems from the ground up to 30 cm high by:

spraying at low-pressure

painting on with a brush.

Cut stump method

Cut stems off at about 15 cm from the ground. Apply herbicide to the cut surface of the stump within 15 seconds. Treat every cut stem because lantana regrows vigorously from untreated stems.

Herbicide options

WARNING – ALWAYS READ THE LABEL

Users of agricultural or veterinary chemical products must always read the label and any permit, before using the product, and strictly comply with the directions on the label and the conditions of any permit. Users are not absolved from compliance with the directions on the label or the conditions of the permit by reason of any statement made or not made in this information. To view permits or product labels go to the Australian Pesticides and Veterinary Medicines Authority website Users of agricultural or veterinary chemical products must always read the label and any permit, before using the product, and strictly comply with the directions on the label and the conditions of any permit. Users are not absolved from compliance with the directions on the label or the conditions of the permit by reason of any statement made or not made in this information. To view permits or product labels go to the Australian Pesticides and Veterinary Medicines Authority website www.apvma.gov.au

See Using herbicides for more information.

2,4-D 300 g/L + Picloram 75 g/L (Tordon® 75-D)

Rate: 650 mL per 100 L of water

Comments: High volume spot spray. Thoroughly wet foliage and soil around the base of plant during March to May.

Withholding period: 1-8 weeks (see label).

Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)

Resistance risk: Moderate

2,4-D amine 625 g/L (Various products)

Rate: 320 m/L in a 100 L of water

Comments: Apply to actively growing bushes.

Withholding period: 7 days.

Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)

Resistance risk: Moderate

Dichlorprop 600 g/L (Lantana 600®)

Rate: 1.0 L per 200 L of water

Comments: Spot spray application, completely wet all leaves and stems.

Withholding period: Nil.

Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)

Resistance risk: Moderate

Fluroxypyr 140 g/L + Aminopyralid 10 g/L (Hot Shot™ )

Rate: 500 mL per 100 L of water

Comments: Seedlings and regrowth 0.5–1.2 m height. Apply to actively growing plants.

Withholding period: Not required for pastures when used as directed. Do not graze or cut crops for stock food for 7 days after application. See label for export restrictions.

Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)

Resistance risk: Moderate

Fluroxypyr 140 g/L + Aminopyralid 10 g/L (Hot Shot™ )

Rate: 700 mL per 100 L of water

Comments: Mature plants and regrowth 1.2–2.0 m. Apply to actively growing plants.

Withholding period: Not required for pastures when used as directed. Do not graze or cut crops for stock food for 7 days after application. See label for export restrictions.

Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)

Resistance risk: Moderate

Fluroxypyr 200 g/L (Comet® 200 herbicide)

Rate: 500 mL or 1.0 L per 100 L of water

Comments: Apply to actively growing bushes from October to April. Use lower rate on seedlings or bushes to 1.2 m high, higher rate on bushes over 1.2 m.

Withholding period: Do not graze failed crops and treated pastures or cut for stock feed for 7 days after application. See label for further information.

Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)

Resistance risk: Moderate

Fluroxypyr 333 g/L (Starane™ Advanced)

Rate: 300 – 600 mL in 100 L of water

Comments: Apply to actively growing bushes from October to April. Use lower rate on seedlings or bushes to 1.2 m high, higher rate on bushes over 1.2 m.

Withholding period: Do not graze failed crops and treated pastures or cut for stock food for 7 days after application. See label for more information.

Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)

Resistance risk: Moderate

Glyphosate 360 g/L (Various products)

Rate: 1.0 L per 100 L of water

Comments: Actively growing with full foliage. Avoid summer stress.

Withholding period: Nil.

Herbicide group: M, Inhibitors of EPSP synthase

Resistance risk: Moderate

Glyphosate 360 g/L with Metsulfuron-methyl 600 g/kg (Various products)

Rate: 10 g metsulfuron-methyl plus 200 mL glyphosate per 100 L of water

Comments: Apply to bushes up to 2 m high. Thoroughly wet all foliage and stems. Add organosilicone penetrant.

Withholding period: Nil.

Herbicide group: M, Inhibitors of EPSP synthase

Resistance risk: Moderate

Glyphosate 360 g/L (Various products)

Rate: 1 part per 9 parts water

Comments: Gas gun / Splatter gun application. Apply 2 x 2 mL doses per 0.5 m of bush height

Withholding period: Nil.

Herbicide group: M, Inhibitors of EPSP synthase

Resistance risk: Moderate

Metsulfuron-methyl 300 g/kg + Aminopyralid 375 g/kg (Stinger™)

Rate: 20 g in 100 L of water

Comments: Hand gun application.

Withholding period: 3 – 56 days (see label)

Herbicide group: B, Inhibitors of acetolactate synthase (ALS inhibitors) + I, Disruptors of plant cell growth (synthetic auxins)

Resistance risk: High/Moderate

Metsulfuron-methyl 600 g/kg (Various products)

Rate: 10 g per 100 L of water

Comments: Apply to bushes up to two metres tall. Spray to wet all foliage and stems. Re-treatment will be necessary.

Withholding period: Nil (recommended not to graze for 7 days before treatment and for 7 days after treatment to allow adequate chemical uptake in target weeds).

Herbicide group: B, Inhibitors of acetolactate synthase (ALS inhibitors)

Resistance risk: High

Picloram 100 g/L + Triclopyr 300 g/L + Aminopyralid 8 g/L (Grazon Extra®)

Rate: 350 – 500 mL in 100 L of water

Comments: Wet thoroughly, use higher rate on large bushes, 1–2 m tall. Low rates for bushes up to 1 m tall. Apply from summer to autumn.

Withholding period: Where product is used to control woody weeds in pastures there is a restriction of 12 weeks for use of treated pastures for making hay and silage; using hay or other plant material for compost, mulch or mushroom substrate; or using animal waste from animals grazing on treated pastures for compost, mulching, or spreading on pasture/crops.

Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)

Resistance risk: Moderate

Picloram 44.7 g/L + Aminopyralid 4.47 g/L (Vigilant II ®)

Rate: Undiluted

Comments: Cut stump application. Apply a 3–5 mm layer of gel for stems less than 20 mm. Apply 5 mm layer on stems above 20 mm .

Withholding period: Nil.

Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)

Resistance risk: Moderate

Triclopyr 240 g/L + Picloram 120 g/L (Access™ )

Rate: 1.0 L per 60 L of diesel (or biodiesel such as Biosafe).

Comments: Basal bark application for plants with stems up to 5 cm diameter at the base. Liberally spray the bark around the stem from ground level to 30 cm high, wetting thoroughly to the point of runoff. Cut stump application for plants with a diameter up to and more than 5 cm at the base. Apply herbicide immediately after the cut. See label for information about using biodiesel.

Withholding period: Nil

Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)

Resistance risk: Moderate

Triclopyr 300 g/L + Picloram 100 g/L (Various products)

Rate: 350 – 500 mL per 100 L of water

Comments: Wet thoroughly, use higher rate on large bushes, 1–2 m tall. Low rates for bushes up to 1 m tall. Apply from summer to autumn.

Withholding period: Nil.

Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)

Resistance risk: Moderate

Triclopyr 600 g/L (Garlon® 600)

Rate: 1.0 L per 60 L of diesel

Comments: Basal bark application for plants with stems up to 5 cm diameter at the base. Cut stump application for plants with a diameter more than 5 cm at the base.

Withholding period: Nil.

Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)

Resistance risk: Moderate

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Biosecurity duty

The content provided here is for information purposes only and is taken from the Biosecurity Act 2015 and its subordinate legislation, and the Regional Strategic Weed Management Plans (published by each Local Land Services region in NSW). It describes the state and regional priorities for weeds in New South Wales, Australia.

Area Duty All of NSW General Biosecurity Duty

All plants are regulated with a general biosecurity duty to prevent, eliminate or minimise any biosecurity risk they may pose. Any person who deals with any plant, who knows (or ought to know) of any biosecurity risk, has a duty to ensure the risk is prevented, eliminated or minimised, so far as is reasonably practicable. All of NSW Prohibition on certain dealings

Must not be imported into the state, sold, bartered, exchanged or offered for sale. South East

Exclusion zone: whole region excluding the core infestation area of Eurobodalla, Kiama, Shellharbour, Wollongong and the Shoalhaven local government area north of the Lantana Containment Line at 35’11″42 S Regional Recommended Measure* (for Regional Priority – Containment)

Whole region: Land managers should mitigate the risk of new weeds being introduced to their land. The plant should not be bought, sold, grown, carried or released into the environment. Exclusion zone: The plant should be eradicated from the land and the land kept free of the plant. Core area: Land managers reduce impacts from the plant on priority assets. *To see the Regional Strategic Weeds Management Plans containing demonstrated outcomes that fulfil the general biosecurity duty for this weed click here

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local council weeds officer.

For further information call the NSW DPI Biosecurity Helpline on 1800 680 244 or send an email to For technical advice and assistance with identification please contact yourFor further information call theonor send an email to [email protected]

Reviewed 2022

How to effectively kill Lantana

If you’ve experienced an ongoing lantana or woody weed problem on your property that you’re having difficulty controlling, you’re not alone. Lantana is regarded as one of the worst woody weeds in Australia because of its invasiveness, potential for spread, and its economic and environmental impacts on regional and productive agricultural areas. Lantana, like many woody weeds, is toxic to livestock and reduces profitability to landholders by regularly out-competing pastures and increasing mustering costs.

What is Lantana?

The term ‘Lantana’ actually refers to a genus composed of about 150 perennial flowering plants. It is an introduced species to Australia, considered to be invasive and noxious. The two main varieties of Lantana in Australia are a cultivated form planted in gardens, and a destructive woody weedy variety found in bushland, roadsides, nature strips, and pastures.

Lantana flowers whenever the soil is moist and the air is warm and humid. Along the Queensland and New South Wales coastal regions, this results in almost continuous flowering and fruiting. Further inland, peak flowering occurs several weeks after soaking rain (25 mm or more) and is usually accompanied by a good fruit set.

Why is Lantana difficult to eradicate?

Lantana has certain characteristics that make it very tricky to eradicate. It has very dense, impenetrable thickets that can take over land and pastures rapidly if not treated and monitored regularly. Lantana competes for resources and reduces the productivity of pastures. It adds fuel to fires and is toxic to some stock. Lantana can also release a natural chemical into the surrounding soil which prevents germination and competition from some other plant species.

Further adding to the headaches around lantana, the plant can resprout from the base if the shoot dies, extending the life of individual plants; the seeds themselves can remain viable for several years under natural conditions.

It is not surprising that in fact, it is listed as one of the most impactful environmental weeds across many local government areas.

Why are herbicides effective in controlling Lantana?

Herbicides are an effective way to control lantana and there are many to choose from. Knowledge of the variety of herbicides can assist in the most cost-effective result. Investment in control can achieve good returns for landholders:

Herbicides that control lantana will increase the carrying capacity of the land being treated.

Herbicides also minimise the disturbance of natural vegetation and soil which minimises germination and invasion of other weeds

Herbicides can provide a selective approach to control. Some selective herbicides do not impact on pastures or eucalypt trees. Some herbicides have residual capacity to help control new lantana seedlings, providing an opportunity for pastures to grow. Other herbicides are useful in sensitive vegetation areas that break down immediately in the soil. This must be considered before undertaking any herbicide treatment.

How to apply herbicides for treating Lantana

The main application technique is spraying the entire plant (foliar spraying), which usually kills plants that are less than 2 metres high, however it is important that the plant is completely saturated with herbicide to ensure an effective kill.

For larger plants, herbicides applied to the lower bark of the stems or immediately painted onto freshly cut stumps prove to be the most effective.

The trouble with both of these techniques is that they can be time-consuming as they require treatment of each stem, and stems can be difficult to access in large stands of lantana. It is because of this that we recommend our customers treat Lantana early, before the noxious weed becomes too thick and difficult to control.

Herbicides are absorbed into the sap system through contact with the leaves and root system of the lantana plant. Spraying the foliage is a common method of application. To support the efficacy of the herbicide, Specialist Sales also recommends a good penetrant be used in conjunction with the herbicide to help force the herbicide into the plant. Lantana leaves are hairy and rough, and herbicide contact can be less effective without a penetrant supporting the herbicide to stick to the leaves.

What are the best herbicides for controlling Lantana?

There are many herbicides registered for lantana control sold through Specialist Sales, including a number of branded and generic, selective and non-selective herbicides that treat lantana for each specific application method.

The most popular lantana controlling herbicides include:

Grazon Extra: The trio combination of Triclopyr, Picloram and Aminopyralid in this herbicide makes it effective against a range of woody weeds, and is available in several pack sizes.

Herbicides that contain the active ingredients like Aminopyralid and Fluroxypyr are also very effective against Lantana. This combination of products is of course effective against other woody weeds as well.

The active ingredient Aminopyralid is what makes these two products particularly effective. A pyridine carboxylic, Aminopyralid is used as a selective, post-emergent herbicide to control key broadleaf weeds. It is a new generation active ingredient that is effective at very low rates when compared with other herbicides. When combined with other ingredients, such as Triclopyr and Picloram, the power on Lantana is magnified.

Hatchet , Raizon or Woody Herbicides: These are both Triclopyr and Picloram containing herbicides; in effect the same product, but under different brands.

Glyphosate: We stock a range of Glyphosate containing herbicides, available as granules and liquid, in a variety of pack sizes.

Lantana DP 600: Provides integrated control of lantana and other woody weeds. The active ingredient is Dichlorprop, present as the Potassium Salt. It is recommended to be applied to actively growing lantana plants for effective control. This herbicide is very selective and is particularly necessary when there are susceptible non-target species nearby.

Products to boost the power of your herbicides

Apart from using straight out herbicides, you can use a range of other products to boost the effectiveness of your base herbicides. Here is a list of the most commonly used boosters:

Metsulfuron: When used with Aminopyralid, Triclopyr or Picloram, Metsulfuron provides the ultimate potent Lantana killing spike. Especially effective when these three active ingredients are combined together and then further mixed with Metsulfuron.

Probe or Eurochem Penetrants (Polyether Modified Polysiloxane): these products ‘stick’ the spray droplet to the leaf as well as spread it for maximum coverage. The blend of Adjuvants and Surfactants in these products force the active ingredient through the leaf, ensuring it ends up in the sap flow and eventually into the root system.

Marker Dye: While not a booster per se, marker dyes show you where you are going, which means you end up spraying just the right amount, where you need it.

Can we help you with any questions?

Of course, our Specialist Sales team is always available to talk with customers about the most effective way to eradicate Lantana on their property, and we guarantee that if we can’t save you money, we don’t deserve your business.

Lantana

What is lantana?

Lantana (Lantana camara) is a large flowering shrub native to Central and South America that readily grows into thickets. After being brought to Australia as an ornamental garden plant in about 1841, the weed quickly escaped domestic cultivation and within 20 years was established in the wild. Lantana was first declared noxious around 1920 and by the 1950s it had spread over more than 1600 kilometres of the eastern Australian coastline.

In 2006, the invasion, establishment and spread of lantana was listed as a key threatening process (KTP) by the NSW Scientific Committee. It thrives in warm environments with high rainfall where the weed grows along forest edges, penetrates disturbed rainforest and invades open eucalypt woodlands and pastures. Within Australia, it has invaded more than 4 million hectares.

Why is lantana a problem?

Managing lantana in our national parks

The NSW National Parks and Wildlife Service (NPWS), now part of the Office of Environment and Heritage, applies an integrated approach to manage the weed, using the regional pest management strategies and the Saving our Species program to combine different control methods to achieve the best results and minimise its impact on native plant species. Many lantana control programs are run in conjunction with local communities and councils. When management is undertaken for biodiversity conservation, five-year site management plans are completed.

For information on specific weeds and control techniques visit NSW WeedWise.

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