Syngenta Barricade Pre Emergent Herbicide 250mL

Product Description

BARRICADE Pre-Emergent Herbicide contains 480 g/L prodiamine, sold in 250 mL, 1L and 5L packs. It is applied before weeds emerge and stops the listed weeds from germinating. The label lists established lawns and turf grass, garden beds (under mulch) and potted plants. Weeds named include crab grass, summer grass, barnyard grass, paspalum, rat’s tail fescue and winter grass, and in garden beds and pots also chickweed, creeping oxalis, cudweed and sow thistle. Signal word: CAUTION.

Where not to use it. The label says not to apply it in vegetable gardens or around fruit trees or sensitive plants, and not over the top of mulch. Do not apply to turf under stress, or to newly seeded, newly laid or sprigged turf: wait until the turf is at 100% cover with a root system developed beyond 3 cm. Do not apply to recently re-potted or newly potted seeds, cuttings, divisions or plants. Do not plant seeds in treated soil, replant any crop or ornamentals, or overseed with cool season grasses for 6 months after application. Do not let spray or drift contact recently planted or non-established plants or vegetable gardens.

How to use it. See the Application Rates tab. The label says to apply before weed emergence: in early spring for most weeds, and in late summer to early autumn for winter grass. On turf, lightly water in within 24 hours; on garden beds and pots, water in straight away with at least 3 mm of rain or irrigation. Do not apply if heavy rain is forecast within 48 hours or to waterlogged soil, and do not water to the point of run-off within 3 days. Do not graze treated turf or feed clippings from treated areas to poultry or livestock.

Before you buy. Wear safety glasses. Do not let containers or spray get into drains, sewers, streams or ponds. First aid is not generally required; if in doubt call the Poisons Information Centre on 13 11 26.

Delivery from $17, priced by weight and postcode at checkout.

Additional information

Weight	1.45 kg
Dimensions	32 × 12 × 24 cm
Size	250mL

Safety Data Sheets (SDS)

Download SDS

Herbicide Label

Download Label

Application Rates

Established Lawns and Turf

Garden Sprayer
• Use 30 mL per 10 litres of water
• Covers 100 square metres

Watering Can
• Mix 3 mL in 9 litres of water
• Apply evenly over 10 square metres

Timing
• For summer weeds: apply in early spring
• For Winter Grass: apply late summer to early autumn
• Must be applied before weed emergence
• Residual control lasts up to 6 months

Watering In
• Lightly water in within 24 hours of application

Garden Beds and Potted Plants

Garden Sprayer
• Use 40 to 80 mL per 10 litres of water
• Covers 100 square metres

Watering Can
• Mix 4 to 8 mL in 9 litres of water
• Apply evenly over 10 square metres

Timing and Notes
• Apply before weed emergence
• Provides up to 4 months control in potted plants
• Provides up to 6 months control in garden beds under mulch
• Use higher rates where weed pressure is high
• Apply to soil before mulching, not over the top of mulch
• Wash in with a minimum of 3 mm irrigation or rain

Important Restrictions

(from page 2 of the label)
• Do not apply to turf under stress, newly seeded or newly laid turf
• Delay use until turf is fully established with root depth beyond 3 cm
• Do not apply if heavy rain is expected within 48 hours
• Do not irrigate to runoff within 3 days
• Do not apply over mulch
• Do not plant seeds in treated soil for 6 months
• Do not re enter until spray has dried

Mixing Instructions

(from pages 2 and 3)
• Shake bottle well before opening
• Add half water first, then product, then top up
• Agitate before spraying
• Only mix enough for same day use

Tips for Use

Shake well before opening
Barricade must be shaken thoroughly so the active constituent disperses evenly before mixing.

Mix correctly for the application area
Add half the water first, add the measured Barricade dose, then top up with the remaining water. Agitate before use.
Only mix enough solution for the area being treated and for the same day of application.

Apply before weed germination
Barricade controls weeds only at the germination stage. Existing weeds will need a post emergent first.

Choose the right timing for the season
Use in early spring for summer weeds, and from late summer to early autumn for Winter Grass. This gives the barrier maximum effectiveness.

Measure your lawn or garden area first
This ensures the correct amount of mixture is prepared and prevents under application or over application.

Apply evenly across the entire surface
Spray or pour the mixture evenly to create a consistent layer in the upper soil profile. This is critical for proper barrier formation.

Lightly water in after application
Water the area within 24 hours to activate the herbicide and move it into the top layer of the soil.
Avoid watering to runoff for the first three days.

Do not apply to stressed or newly planted turf
Wait until turf is fully established with a developed root system at least 3 cm deep before applying.

Do not apply over mulch
For garden beds, apply to the soil surface and wash in before mulch is added.

Allow spray to dry before re entry
Do not allow people or pets to enter treated areas until the application has dried completely.

Wash equipment after use
Rinse sprayers, nozzles and watering cans thoroughly to prevent residue buildup.

Active Ingredients

Prodiamine 480 g per litre

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Frequently asked questions

What is the difference between a selective and a non-selective herbicide?

A selective herbicide kills target weeds while leaving desirable plants unharmed - for example, a lawn-safe product that removes bindii and clover from buffalo or couch without damaging the turf. A non-selective herbicide such as glyphosate kills almost any green plant it contacts, so it is used for driveways, fence lines, garden-bed prep and total vegetation control, never on lawns.

What is a pre-emergent herbicide and when do I apply it?

A pre-emergent creates a barrier in the top layer of soil that stops weed seeds from establishing as they germinate. It does not control weeds that are already growing. Apply it before the target weed germinates - late summer to early autumn for winter grass, and early spring for summer grasses like crabgrass and crowsfoot - then water it in.

Will herbicide damage my lawn?

Only if you use the wrong type. Non-selective herbicides (glyphosate) will kill or badly damage turf. Selective lawn herbicides are formulated to be safe on common Australian turf at label rates, but tolerance varies by grass - buffalo is the most sensitive - so always check the label lists your turf type before spraying.

Barricade Pre Emergent 250ml

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Product Description

Additional information

Safety Data Sheets (SDS)

Herbicide Label