I have used the lawn weedkiller product two weeks ago but my lawns weeds look better than ever, why aren’t they dying?

These weedkillers are systemic and are absorbed into the weed and must travel to all parts of the plant to work well. It can take up to 4 weeks for the weed to die. The effectiveness of all lawn care products is dependent on the weather and this is why they are best applied when the weeds are growing actively. To work effectively, they should not be applied when rain is imminent, when the soil is dry, or conditions are too cold for the weeds to grow properly.

When are the best times to apply product to kill lawn weeds?

Lawns weeds are best controlled when they are actively growing, and this is normally in spring when the soil is moist, and conditions are warm. Always leave the lawn a few days after the last mowing to allow the weeds time to grow a little before applying the product and do not cut for at least 3 days after application to give the weeds time to absorb the weedkillers. Early morning on a dry day in April or May is usually when the best results are achieved.

How do I remove really persistent weeds from my lawn?

Persistent weeds must be removed before they take over completely or build up a large bank of seeds in the soil for future years. Regular hand weeding or can help, but relatively large areas need to be sprayed using a concentrated lawn weedkiller, such as Verdone.

How can I stop weeds taking over the lawn?

There are lots of things you can do to help prevent weeds from running riot – correct mowing, feeding the grass to increase its vigour (and to help it crowd out the weeds), and regular treatment with a selective weedkiller will all help halt the invasion.

How long do I need to wait between applying glyphosate and laying the grass seed?

Glyphosate is deactivated on contact with soil. It only works by absorption through the green part of plants. Grass seed could be applied straight after the application of the weedkiller but realistically it is better to wait until the weeds are dead as it may be necessary to retreat some of the more persistent weeds and it is much better to wait and clear the weeds fully than have to try and deal with them as the new grass is growing.

I treated some weeds with glyphosate and they seem to be showing no signs of dying, whilst other weedkillers I have tried in the past, such as Kills Weeds Dead Fast!, turned the weeds brown and crispy within days of treatment. Why has glyphosate not done the same?

Glyphosate weedkillers are absorbed through the leaves of the weed and then travel within the weed to all parts including the roots. Once it has fully circulated within the weed, it then causes death. This process takes time. Weed death should be seen approximately 3 weeks after application of the glyphosate.

I have been told that glyphosate is the best weedkiller to use, when is the best time to use it?

As this weedkiller is systemic, it is important that it is applied to weeds which are actively growing. Avoid using the weedkiller in times of drought or when temperatures are low as the weeds will not be growing efficiently. It may seem a strange concept, but it may be useful to water any areas of weeds a day or so before the application of glyphosate weedkiller to get them growing! The golden rule when using glyphosate weedkiller is ‘The better the weeds are growing, the better the product will work!’

Can you provide me with any advice with regards to the use of a total weedkiller such as glyphosate around plants I wish to keep?

Weedkiller such as glyphosate will only kill a plant if the spray lands onto the greenery of that plant as this is the only way it can be absorbed. The weedkiller cannot be taken up through the roots of the plant. If glyphosate, or any total weedkiller, is being used between wanted plants then care should be taken not to get the spray onto those plants. A good tip is to hold a large piece of cardboard in front of those wanted plants, so they are protected from any potential spray drift.

Can you explain why for glyphosate Weedkiller there are two different application rates stated on the label depending on whether a sprayer or watering can is used?

A larger amount of water is required to apply the weedkiller through the watering can to ensure even and easy coverage of the designated area. A smaller volume of water is required to apply the weedkiller through the sprayer as they provide a better surface area coverage as finer droplets are created.

Can I use Doff ant powder containing permethrin on flower beds and around edible crops?

Yes, Doff ant powder can be used on open soil beds as long as the powder does not enter the waterways as permethrin is fatal to aquatic life.

Can I use Glyphosate on lawns?

No, Glyphosate is not a selective herbicide, it will kill all green plant parts

If I have just sown some new grass seed on the lawn, should I stop my dog from walking on it?

Yes, to allow the seeds to germinate please wait until it has rained, or the seeds have been watered in before you allow your dog to walk on the grass.

For how long should I wait before I allow my pets to walk on areas treated by Doff Weedkiller & Path & patio cleaner?

Please wait until the treated areas are dry before allowing your pets to walk on the area.

I have bought some of your feed/fertiliser. Is it harmful for my pets?

All our feeds are non-hazardous and should be fine for to use around your pets.

Where can I get a safety data sheet for one of your products?

All our safety data sheets for hazardous items under the CLP regulation can be found under the product page on our website.