Prime Source Celsius WG - 0.226 oz Easy Mix Packet-Post Emerge Weed Control

The most effective selective herbicide I've used. Get yourself a two gallon hand pump or electric sprayer, some surfactant, mix it up and you're ready to go. As others have said, it works slowly but it's very effective. Bonus, it's less expensive than the common brands at big box stores when you consider you get two gallons out of one packet. Be sure to use it in the right conditions (season/temperature/precipitation/wind) for best results.

I used this to take care of some different types of weeds that were in my lawn that consists of Bermuda and st augustine. It said it was safe to use the type of grass and it didn’t hurt it at all. It was easy to use. When I applied it I didn’t notice a difference the first few days, but then probably after about a week the weeds started to shows signs of wilting and drying out. Then after 2 weeks I could tell that most of the weeds were mostly brown compared to the green grass. I did notice some weeds were still alive but I probably missed them the first time I sprayed but that’s on me. I would recommend spraying another time maybe after to 2-3 weeks to ensure that the weeds are killed. This product is really good at what is does it killed weeds that I didn’t know were there. Overall I recommend this product if you have weeds in your lawn.

Celsius is the first lawn weed killer that I’ve used since starting my life as a homeowner this fall. It also might be the only lawn weed killer I use now! I used it for the first time last night on a group of thistles, prickly lettuce, and parsley in my St. Augustine and Bermuda yard. I used the strongest mix possible, but it was still encouraging to see these weeds wilting and yellowing at their bases today. And of course my grass was left completely unscathed. This herbicide is easy to mix because of the granular form and it’s friendly to all Southern yards, even the more sensitive St. Augustine varieties. I’ll keep a supply of these packets coming at all times!

Loved how effective this is. Most people, I read, mix it with certainty herbicide but that was too expensive for my individual use. Just used this handy little packet perfectly priced for a 2 gallon mix to which I added a little surfactant. Covered about 2k sq ft. It has started to kill weeds I have no idea what they are called ( mostly broadleafs). Slow acting but it surely looks like is very effective.

I use this in conjunction with a twice a year pre-emergent and all the weeds are gone and they have mostly stayed away for months. Works especially well on clover! I have two kinds of grass in my yard, Saint Augustine and zoysia palisade sod. The Celsius spray work without hurting that grass or yellowing it at all. I'll probably use it to spot treat at least twice a year maybe three times a year.