Was it a "ready spray" or concentrate? If you mixed it "heavy" thinking it
would kill quicker, it won't. It actually has a slower, lesser kill when you
don't follow the ratio...Probably 6 oz. per gal? Round-up will kill anything
green,(non-selective) and it dissipates when it reaches the soil, so it is
safe to plant anything 7 days later....It kills to the root of whatever it
gets on, but it is rain-fast after 2 hrs., so if it is mistakenly sprayed on
something it can be washed off. The USDA is actually developing fruit crops
to be glyphosate (Round-up) hardy for weed post-application...


"Pkevinf" wrote in message
om...
I really try not to use chemicals but I used Round Up on a 20 by 40
foot bed to have done by the 4th of July (per wife)... It's been down
for 5 days and the grass looks "light" green, not brown. May I still
lay 6 in. of compost/topsoil to start my bed tomorrow? The last
thing I'd want is grass growing thru.

P.S. No rain, mid 70's days, low 60's nights

Thanks!

P.P.S. Most times I just dig or lay newspaper