Apply spring pre-emergents when the 5 day average soil temps are in the 50-55F range. Or use [this tracker](https://gddtracker.msu.edu/).
If you have a question about pre-emergents, read the entire label. If you still have a question, read the entire label again.
Pre-emergents are used to prevent the germination of specific weed seeds. They don’t kill existing weeds.
Most broadleaf weeds you see in the spring can’t be prevented with normal pre emergents. You’d need to apply a specialty broadleaf pre emergent in the FALL.
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You actually might be too late?. If you look up soil temps, you need to get that down this weekend asap. If you wait until next week, you are likely too late.
You gotta do it BEFORE it’s 55.. i’d rather be a tad too early than too late.
gh1993
I’m not an expert but I don’t believe cold temps will make the pre emergent ineffective, its just that 55 is when crabgrass etc start geminating. I have similar temps to you and put down pre emergent last weekend.
goofust
I’m in Arkansas, here is almost too late for pre-emergent. General rule of thumb here is from late January to about the second week of April. Though there will be companies spraying well into May, what I said is probably best time to ensure no annual weeds like crabgrass take hold.
Pre-emergent tends to cover 6 months or 2 seasons, that’s why there is usually 2 pre-emergent apps, one in early spring (which covers spring and summer) and one in early fall (which cover fall and winter).
rmoons
What’s up fellow Clevelander! I put my pre down last week. Tad too early but better than too late
8 Comments
Apply spring pre-emergents when the 5 day average soil temps are in the 50-55F range. Or use [this tracker](https://gddtracker.msu.edu/).
If you have a question about pre-emergents, read the entire label. If you still have a question, read the entire label again.
Pre-emergents are used to prevent the germination of specific weed seeds. They don’t kill existing weeds.
Most broadleaf weeds you see in the spring can’t be prevented with normal pre emergents. You’d need to apply a specialty broadleaf pre emergent in the FALL.
*I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/lawncare) if you have any questions or concerns.*
Go by soil temp not air
https://www.greencastonline.com/tools/soil-temperature
Check this instead mate.
You actually might be too late?. If you look up soil temps, you need to get that down this weekend asap. If you wait until next week, you are likely too late.
https://www.greencastonline.com/tools/soil-temperature
You gotta do it BEFORE it’s 55.. i’d rather be a tad too early than too late.
I’m not an expert but I don’t believe cold temps will make the pre emergent ineffective, its just that 55 is when crabgrass etc start geminating. I have similar temps to you and put down pre emergent last weekend.
I’m in Arkansas, here is almost too late for pre-emergent. General rule of thumb here is from late January to about the second week of April. Though there will be companies spraying well into May, what I said is probably best time to ensure no annual weeds like crabgrass take hold.
Pre-emergent tends to cover 6 months or 2 seasons, that’s why there is usually 2 pre-emergent apps, one in early spring (which covers spring and summer) and one in early fall (which cover fall and winter).
What’s up fellow Clevelander! I put my pre down last week. Tad too early but better than too late