[thegreenteam]

When is the best time to put down pre m in landscape beds? Too early do you get a lot of affect from heavy rains? Too late and you have missed germination?

 

[pieperlc]

Hard to say. It can be different from year to year. I apply mine before the conditions are favorable for germination of my target weeds. I do it before I refesh mulch beds even if it is a little too early of too late because then I'm getting the product down towards the soil where it belongs.

 

[SeedPro]

It depends on what product you are using and what activities are going to go on in the beds. But fortunately as far as timing is concerned the Pre emergents are pretty forgiving, but you certainly don't want to apply it if there will be any manipulation of the soil or mulch. And if you are mulching, add it to the clean bed right before you mulch.

 

[Runner]

I firmly agree. Another somewhat of a guide, is when about the first inch or two of topsoil reaches 50 degrees for two or more days consistently, then the product should be applied and ready. The only problem with this theory, is that beds have many other things in them - such as trees, ornamentals, and other stuff. These things collect heat and also deflect heat off of them and onto the ground. Also, consider beds around structures. These beds will be much warmer, faster than other areas - especially on south sides. But as SeedPro mentioned, be prepared and have your beds worked or whatever you're going to do AHEAD of time. Otherwise, if you stir the beds after, all bets are off...it will just be a waste.

 

[jdmcat]

I'm already done with mine, while everybody else in the country has been buried in snow, it's been like spring here since December. It's gonna be a long, hot, dry summer...