Msm is rough on grass at temps over 85 degrees. Celsius has been working for me. High rate is required. 49 grains/ gal if I recall correctly. Trimec southern works great too but if it's over 85 it's a no go.

 

Sulfentrazone nukes spurge pretty well. Mix with a pre-M, and maybe that's a solution that will have less ipmact to other desirable plants?

 

I`ve been spot spraying MSM Turf at that rate for the past 3 weeks on my lawn to kill Spurge and it has not hurt my Tif 419 at all. It was 102 when I sprayed it one day with no ill effects.

 

I have the same issue with it around my mostly palm trees and don't know of anything that would be completely safe. Would love to hear others thoughts on Saftey around trees.

 

Thanks for your responses guys. Here's an update - I've spot treated the areas with another high rated dose of Celsius - not exactly sure why it's not working. (didn't use surfactant because of the 85+ temps, but made sure I got it on the plant real good)
Maybe I'm wrong and it is working but the fact that I have crazy levels of spurge near the back woods probably means there's just a ton of seeds being blown into my lawn.

I want to take care of the 7-8 feet of spurge near the wood line. I tried giving the second dose of celsius a chance before @'ing any of the pros here and I absolutely neither want to nor deal with killing any of those enormous 40 foot trees.

@Greendoc based on multiple spurge/MSM related posts, it looks like this area is one of your expertise. Sorry for the annoyance but could you please help?

Here's what I have on hand; Celsius, Prodiamine, Certainty, Poison Ivy killer (Roundup Concentrate Poison Ivy Killer Plus). I used the Ivy stuff near trees successfully without harming the tree (ivy crawled about 30 feet of the 40 foot tall tree). I am waiting on purchase MSM based on advice given here.

 

You can safely use MSM near those trees. Provided. Your soil pH is under 7. You are able to evenly apply no more than 0.5 oz per acre of the MSM 60 product. You are able to combine it with something like Speedzone or else Three Way or Quicksilver herbicide. You add 0.25% nonionic surfactant to the spray mix. All of these conditions make it more likely you can kill the spurge with the first application without having to apply again .

 

I damn nearly killed two live oaks using MSM a couple years ago. I thought I was careful on the rate, but it was probably too hot. I was more a newbie back then, but I'm still not taking any chances.

Fortunately, after looking like hell for the next year, they came back. Whew.