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

Pretty good weed killer, works slow but it works.

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!

DId have some effect on Chamberbitter. Will try again this spring in hope it wipes out this nasty rapidly invasive pest.

We have some very obnoxious weeds that don't respond to standard herbicides. Researching the varieites, it appeared Celcius was probably the best choice. It worked great on the dichondra, but had difficulty with the Dalias Grass (which is almost impossible to kill unless you use round-up). One needs to be careful as it can hurt centipede and zoysia -- we did see a bit of yellowing, and stunted growth for a month or so, but the grass recovered nicely, and 4 months later shows absolutely no sign of damage. Knowing this, I did not want to spray the entire lawn and only wanted to spot kill in the few areas we had problems. Celcius is used commercially a lot, so most offerings were for much larger quanties than I'd ever use, and it is rather expensive. These small packets were a perfect choice.

We use this potent product to control Dollar Weed in our yard. We mix 1 packet with a gallon of water, and we spray on the leaves very sparingly, and in a week or two the Dollar Weed starts to die off. It may require a second treatment and do not use this product unless the plants are dry, with no rain expected within a day or so, so the chemical does not just wash off the leaves. We are careful not to over-apply the chemical, being cognizant of our waterways and all... great product if used correctly.

Follow the instructions and add a bit more. It did nothing for my lawn. Not sure if this is the real deal, but it does not work. I waited a week to see if anything is going to kill my weeds. I have overgrown weeds and only the dandelions were slowly dying, but didn’t kill it all the way. I tried to upload a picture, but it won’t work but picture a front lawn with all different types of weeds, fully overgrown my lawn.

I live in Florida, and we have St Augustine grass. It can be a PITA to keep looking good and weed free, a few of my neighbors even tried other grasses. I’ve tried everything, with my previous favorite being Atrozine, but the iterations out now aren’t strong enough. This stuff flat out works, within a few weeks everything but the grass is dead. It may have taken out a bit of grass as well, but not enough to outweigh the fact that it killed all the weeds. This is all I will use from now on. Used in Summer and Winter, it worked both times.

This stuff is fantastic and mixes easy. Im able to spray this on all weeds in my yard knowing it wont hurt my grass. I would recommend this for sure to any yard enthusiast.