FAQ - Vegetation Management New Zealand

Read the most frequently asked questions to our team of experts in Vegetation Management.

Print page

Ask the Expert

Have your own question? Then simply complete our contact form and you will get an answer from our expert!

Back to Education and Support


Frequently Asked Questions

What is Method 240SL Herbicide?

Method 240SL is a preemergence and postemergence herbicide that controls a wide range of broadleaf weeds, vines, and brush species, including many that are listed as noxious or invasive. It is used in a variety of industrial and non-crop settings such as industrial sites and powerline rights-of-way, roadsides, and railroads, and may also be used in natural areas and lands managed for wildlife.

What is the active ingredient in Method 240SL Herbicide?

Method 240SL is a soluble liquid consisting of potassium salt of aminocyclopyrachlor (ACP).

How does Method 240SL work?

Method 240SL herbicide mimics effects on the plant’s own enzymes and blocks the growth of plants by interfering with the hormonal balance required for normal shoot and root development. It is taken up by both the roots and shoots and, once inside the plant, is translocated to the parts of the plant that are rapidly growing. Typical symptoms include twisting of the leaves and stems, which can become apparent in a matter of hours. This abnormal growth will cause the plant to die over a period of time, with more susceptible plants dying in a matter of days.

Where can Method 240SL be applied?

Method 240SL herbicide can be applied to non-grazed, non-crop areas including airports, highways and roadsides, railroads, pipeline and utility rights-of-way, industrial areas, fence lines, barrier strips, pumping stations and restoration areas, natural and conservation management areas.

What weeds does Method 240SL control?

Method 240SL herbicide controls a range of broadleaf weeds and brush including all species of wilding conifer or wilding pine, gorse, broom, fleabane and blackberry. Please see the Method 240SL product label for a complete list and always read the label before use.

Can Method 240SL be used in grazed areas?

Method 240 SL can only be used in non-crop, non-grazed areas. Please follow the approved label directions in all situations.

Is Method 240SL a good choice for custom blends?

Method 240SL herbicide is an excellent product for custom mixing to control many broadleaf weeds and brush in a variety of climates, operations and regions. Tank mix with Esplanade® for an outstanding bareground solution or with triclopyr for the ultimate woody weed control. Please follow the approved label directions of all products used when blending. 

What is Esplanade Herbicide?

Esplanade Herbicide is a preemergence herbicide that offers long-lasting control of over 30 species of annual grasses and broadleaf weeds, with a use rate significantly lower than competitive standards. Plus, with up to eight months of residual control, Esplanade also reduces time and labour costs.

How does Esplanade Herbicide work?

Esplanade Herbicide controls weeds by reducing the emergence of seedlings through inhibition of cellulose biosynthesis (CB Inhibitor). Necrosis or yellowing may also be observed if the herbicide is applied to herbaceous tissue such as leaves and green stems of susceptible plants.

Where can Esplanade Herbicide be applied?

Esplanade Herbicide is used to control many annual grasses and broadleaf weeds in railroads, roadsides, hardscapes, industrial areas, utilities, airports, government and military installations, managed areas (pumping stations, storage areas, rail and utility rights-of-way, utility substations, around farm buildings & fencelines, fence rows, manufacturing sites).

Esplanade may be used to release or re-establish desirable perennial grasses, forbs, shrubs and trees in non-crop areas such as parks and open space, wildlife management areas, recreational areas, fire rehabilitation areas, rangelands and fire breaks.

Esplanade may also be used in forestry plantations to assist with the establishment of tube stock.

How is Esplanade helping in the release or restoration of desirable vegetation?

Esplanade Herbicide helps control invasive annual grasses such as ryegrass and may provide extended levels of control with one application. Controlling invasive annual grasses for several years reduces the seedbank and future invasion. Annual grasses can degrade wildlife habitat quality and quantity, ecosystem diversity, and contribute to bushfires.

What are the active ingredients in Esplanade Herbicide?

Esplanade Herbicide contains the active ingredient indaziflam, which is one of the most effective and long-lasting preemergence solutions available.

How is Esplanade Herbicide different than other preemergence herbicides?

Esplanade Herbicide has a unique mode of action that is very effective against weed species that have developed resistance to other commonly used herbicides. Additionally, the length of control provided by Esplanade is excellent, lasting up to eight months. This reduces the number of applications needed in a season and gives applicators the flexibility they need – saving time and money. These use rates are much lower than other preemergence herbicides which are applied at many times the rate of product per hectare.

When do I apply Esplanade Herbicide?

Apply in the spring prior to weed seed germination for control of spring and summer weeds and apply in the autumn for control of winter weeds. For late autumn applications, apply Esplanade prior to first germination. Esplanade does not generally control weeds that have emerged.

What are the use rates for Esplanade?

Apply Esplanade Herbicide at a rate up to 200 mL/hectare per single application. Esplanade should not be applied at more than two times within a 12-month period. Factors including soil type, rainfall, and the amount of vegetation at the time of treatment may affect weed control.

Does Esplanade need to be watered in to activate it?

Yes. For maximum weed control, Esplanade Herbicide needs to reach the soil surface and be activated by rainfall or adequate soil moisture. For maximum activity against germinating weeds, Esplanade requires rainfall (minimum 6mm) within several weeks after application to activate the herbicide. If the herbicide is not activated by rainfall prior to weed germination, control may be reduced.

Does Esplanade have postemergence activity?

Esplanade Herbicide has minimal postemergence activity and generally does not control weeds that have emerged. A postemergence herbicide such as Method® 240SL may be mixed with Esplanade to control existing weeds. Esplanade also does not control tubers, rhizomes, and woody vegetation.

Is Esplanade Herbicide safe to use around crops and non-target plants?

Take precautions to avoid spray drift due to wind, temperature inversion, and droplet size as listed on the label. Avoid run-off due to over-saturated or powdery, dry, light or sandy soil or for other reasons listed on the label. Injury to crops or desirable vegetation may result if treated soil is washed, blown or moved into these areas.

Is there a risk of Esplanade getting into surface water?

When used according to label instructions, Esplanade Herbicide has no detrimental impact on the environment. Do not apply directly to water or to soil where standing water is present except as specified on this label.