The recommended rate for most applications is 20ml mixed in 1 litre of water, which covers an area of 30m². Each 210ml container makes up to 10 litres of spray, enough to treat over 300m². Some weeds such as Horsetail and Ground Elder may require more than one application if regrowth appears. Directions of Use Sizes available: 195ml (makes up to 10 spray litres), 540ml (makes up to 27 spray litres) or 1 litre (makes up to 50 spray litres) Liquid concentrate weed killer provides economical control of large areas of weeds. It starts working in hours to kill weeds and roots. The systemic action takes Roundup right down to the weed's growing points to kill all weeds from 'inside out'.

Roundup is also sold in pre-mixed handheld spray bottles that make it easy to spot-treat small areas around your yard or garden. In addition to larger plants, you can also use Roundup to control the spread of lichens, moss, and scrub brush.

What’s in Roundup® Optima+ Concentrate?

For Roundup Weed & Grass Killer Super Concentrate, use from 1 1/2 ounces, or 3 tablespoons, to 2 1/2 ounces, or 5 tablespoons, per 1 gallon of water. ROUNDUP® Optima+ Concentrate Weedkiller degrades naturally in soil leaving no residue, meaning you can start replanting in just 7 days. How to use Answer: When using Roundup PowerMax II Herbicide in 25 gallons of water you can use anywhere from 13 fl oz to 7 quarts. Should I add dish soap to Roundup? Only store chemicals in their original container and retain instructions in case of medical emergency. Apply by sprayer to lightly wet the leaves and expect to see results in as little as 48 hours. Once sprayed Optima+ will naturally degrade in the soil leaving no residue, meaning you can start replanting in as little as seven days.

PLEASE NOTE: Turf, Wildflower Turf, Sedum Mats and bulk Bag products are delivered on a pallet and can only be delivered to the kerbside. If an additive is recommended on the label, it is there to make the herbicide more effective. Also don’t use dish soap instead of high quality surfactant. One additive that is highly recommended is 17 pounds of spray grade ammonium sulfate ( AMS ) per 100 gallons of spray volume. Roundup Optima+ Total Weedkiller Concentrate is a home garden weedkiller for use on unwanted vegetation and areas not intended to bear vegetation. Roundup Super Concentrate If you’re using Roundup Weed and Grass Killer Super Concentrate, then you should mix about 1.5 ounces, or 3 tablespoons, of Roundup per gallon of water. This should take care of most small weeds. For medium-sized weeds or vines, mix 2.5 ounces for every gallon of water. Can you put roundup in a spray bottle? Answer: RoundUp Pro Concentrate is mixed at 0.5-10.5 fl oz per gallon of water per 1,000 sq ft. Please refer to the product label for the specific dilution ratio that fits your needs on the targeted weeds/grasses. 42 of 250 people found this answer helpful.The ratio of Roundup to water depends on the specific Roundup formula you have. Mix 5 tablespoons, which is 2.5 fluid ounces, of Roundup Super Concentrate per gallon of water. Mix 12 tablespoons, which is 6 fluid ounces, of Round Up Concentrate Plus per gallon of water. How much Roundup concentrate per gallon?