Lantana can be controlled with several registered herbicides, but the best choice depends on the size of the plant, how actively it is growing, the application method you want to use and the restrictions that matter on your property.

For most pasture customers choosing between products on the TGRM shelf, the simplest starting point is:

• Grazon Extra — a strong all-round foliar option for lantana where you want a pasture-selective woody-weed herbicide and are comfortable with its longer soil residual.
• Starane Advanced — a fluroxypyr foliar option where a shorter plant-back restriction may better suit the situation. Its verified label uses crop/rate-specific plant-back intervals measured in days, while Grazon Extra can require much longer intervals depending on crop and region; check the current label for your situation.
• Metsulfuron 600 WG — a low-use-rate dry formulation registered for lantana in Queensland and NSW that can be a practical lower-cost option where its label conditions suit the job.
• Method 240 SL — the low-volume option. It costs more upfront, but it does not require the plant to be sprayed to the point of run-off, so it gets through big infestations with less water and less spray time per plant.

TGRM also stocks registered generic equivalents to Grazon Extra, including lower-priced alternatives. Match any equivalent to its own current registered label rather than borrowing Grazon Extra rates or directions; TGRM staff can help identify the correct product and label for the job.

Always use the exact registered label for the product in your drum or pack. Similar-looking generic products can have different rates or directions.

Grazon Extra for lantana

Grazon Extra contains triclopyr, picloram and aminopyralid and is registered for lantana. For high-volume spraying, the verified label gives:

• Lantana up to 1 m tall in summer to autumn: 350 mL per 100 L water, with the adjuvant specified on the label.
• Lantana 1–2 m tall in summer to autumn: 500 or 750 mL per 100 L water. Use the higher rate on known harder-to-kill varieties.

The label directs thorough wetting of foliage, stems and the soil around the base. Grazon Extra has meaningful soil residual, so it is not the product to choose casually where susceptible crops may be planted later. Check the current plant-back table before use.

TGRM rule of thumb: if the job is established lantana in grazing country and you want the straightforward premium foliar option, Grazon Extra is usually the first product to compare against the alternatives.

Starane Advanced for lantana

Starane Advanced contains 333 g/L fluroxypyr. Its verified label gives:

• Seedlings and regrowth 0.5–1.2 m high: 300 mL per 100 L water.
• Plants and regrowth 1.2–2 m high: 600 mL per 100 L water.

The label says to apply to actively growing plants from October to April and notes that some regrowth can occur, particularly on old woody plants with sparse canopies.

TGRM rule of thumb: compare Starane Advanced when you want a foliar lantana option but do not want the same long soil-residual profile as a picloram/aminopyralid product. Check the current label for the exact grazing and re-cropping restrictions that apply to your situation.

Metsulfuron 600 WG for lantana

The verified Genfarm Metsulfuron 600 WG label lists lantana in Queensland and NSW. For handgun application the rate is 10 g per 100 L water. The label also provides a gas-gun rate of 2 g/L with organosilicone penetrant at 200 mL/100 L.

The label requires treatment of actively growing bushes up to 2 m tall, thorough wetting and good spray penetration. Regrowth may need retreatment.

TGRM rule of thumb: metsulfuron is worth comparing when price per tank and a dry, low-use-rate product matter, but the application conditions and label restrictions still decide whether it suits the job.

Method 240 SL — the low-volume option

Method 240 SL (Envu) contains aminocyclopyrachlor and lists lantana among its registered woody weeds. It works differently from the high-volume options above: the label states that excessive wetting of the target plant is not necessary — good spray coverage is needed, but you should avoid spraying to the point of run-off.

Envu's lantana guidance gives spot-spray rates of 200–500 mL per 100 L water plus methylated seed oil at 1% v/v, on actively growing plants under 2 m — ideally about six weeks after good rain (over 35 mm) with minimum temperatures above 15°C, which in Queensland typically means early summer to autumn. In a NSW trial, 300 mL/100 L gave 100% control twelve months after treatment.

It costs more per litre upfront than the other options. Where it earns that money is time and water: because you are not soaking every plant to run-off, a tank goes much further and each plant is treated faster — which matters on big infestations and on country where every litre of water has to be carted in. Grazing WHP is nil, the export slaughter interval is 12 days, and treated sites should not be planted for at least one year.

TGRM rule of thumb: where water carting and spray time are the real constraint on a big lantana job, compare Method 240 SL — the higher drum price can buy back a lot of hours and water. (A guide only.)

Don't forget the wetter

On lantana's waxy leaves, the adjuvant is not an optional extra — several of the rates above are only registered WITH the additive the label names. Grazon Extra's 350 mL small-plant rate requires the spraying oil or penetrant specified on its label. The metsulfuron gas-gun rate calls for an organosilicone penetrant. Method 240 SL needs methylated seed oil at 1% v/v. Skip the additive and you are not spraying the registered rate — and results usually show it.

TGRM stocks wetters, penetrants and spray oils — from a 1 L Wetter 1000 or Holdfast penetrant for backpack jobs up to 20 L drums for bigger tanks. Different labels name different additive types, so tell us which herbicide you are buying and we will match the adjuvant its label actually calls for.

TGRM rule of thumb: the wetter is part of the rate — budget for it, and put it in the tank.

What about Tordon RegrowthMaster?

Do not use Tordon RegrowthMaster as the default lantana recommendation. In the current verified label, lantana is not listed in the directions for use. RegrowthMaster has a legitimate place for other registered woody-regrowth and timber-control situations, but that is a different buying decision.

When is the best time to spray?

All four verified labels point the same way: spray lantana when it is actively growing, not when it is drought-stressed, frosted or dormant. Grazon Extra's lantana rates are framed for summer to autumn. Starane Advanced directs application from October to April. Envu's Method guidance is the most specific: treat about six weeks after decent rain (more than 35 mm) once minimum temperatures are above 15°C.

In practice around the Gympie district, that means the window opens with the storm season and runs from late spring through autumn — and the best single trigger is a good soaking rain followed by fresh growth. Spraying struggling lantana in the middle of a dry winter wastes chemical: the plant is not moving sap, so it is not moving herbicide either.

TGRM rule of thumb: spray growing lantana, not struggling lantana — wait for good rain and fresh leaf, spray from late spring through autumn, and get plants before they pass 2 m. (A guide only.)

Does plant size matter?

Yes. Grazon Extra, Starane Advanced and Method 240 SL all frame their lantana use around plant size, and Queensland guidance also emphasises treating actively growing plants and getting thorough coverage. A large, old, woody plant is a different job from fresh regrowth.

If your lantana is above about 2 m, badly stressed, inaccessible, close to sensitive vegetation or in a situation where foliar spraying is unsuitable, do not simply increase the rate. Choose a registered method/product for that situation and follow its label.

What should I bring into the store?

The fastest way for the TGRM team to narrow the choice is to know:

• approximate plant height;
• whether it is fresh regrowth or old woody lantana;
• whether the plants are actively growing;
• whether you plan to use a backpack/handgun or another method;
• how much water you can practically get to the job;
• whether the treated area may later be cropped;
• whether grazing/market restrictions matter to your timing.

That lets us compare the registered options — and the wetter to go with them — without pretending one herbicide is best for every paddock.

Important

The registered product label is the legal direction for use. Rates, adjuvants, withholding periods, plant-back restrictions and application methods can differ between products, including products with similar active ingredients. Read and follow the exact current label for the product you buy.

Sources referenced: registered APVMA labels for Grazon Extra (60830/105077), Starane Advanced (62287/117973), Genfarm Metsulfuron 600 WG and Envu Method 240 SL (90496/148179); Envu Method 240SL lantana technical guidance; Corteva product information. Label extracts quoted as at August 2026 — the current label on the product you buy always takes precedence. All rules of thumb above are TGRM guidance and a guide only.