The common lawn pre-emergents (prodiamine, pendimethalin, and dithiopyr) work to help reduce the germination of certain seeds… Mostly grasses and only a handful of broadleaf weeds. The labels will list which weeds are targeted. To prevent more broadleaf weeds, a specialty broadleaf pre emergent like isoxaben is required.
Pre-emergents work by preventing the germination of seeds of the target species. So in order to be effective, a pre emergent needs to be applied BEFORE those seeds germinate. For winter annual weeds (annual weeds that are present in the fall, winter, and spring, like poa annua), a pre emergent needs to be applied in the fall before soil temps fall below 70F. In order to prevent summer annual weeds (like crabgrass), a pre emergent needs to be applied in the spring before soil temps reach 55F. (In very southern areas, timing can be more closely tied with periods of higher moisture AND climbing soil temps. Consult your state extension service for more specific guidance)
Pre emergents will not kill existing weeds. Pre-emergents alone will rarely control a weed problem. Pre-emergents are tools to **reduce** the need for post-emergents. They rarely eliminate the need for post emergents.
The labels of pre emergents have many important instructions and use restrictions. ALWAYS READ THE ENTIRE LABEL. For example, you are limited to 2 applications of each active ingredient per year.
*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.*
cofonseca
Noticed this while cruising around the HD site just now. The promo only seems to be for Scott’s Turf Builder products and will stack if you get more than 1 bag of each. There’s also a $50 discount if you buy the larger sized bags.
You’re basically getting the yellow bag for $6 each. Pretty great deal IMO.
ssh-exp
Great deal, thanks!!
Marley3102
Way overpriced for what you’re getting, even with the discount.
Spruce-W4yne
Those prices are insane. What discount?
Dismal_Bill_4021
Mega corp wins again… tempting. I’m checking out my local ace hardware today for prices
1Enthusiast
Might be better to just get regular fert with the other bag of halts. Granular post emergent hasnt been real effective for me like ever
GluteusMaximusBlack
Mine is only showing up as $40 off for a $73.86 total. Any reason why I’m not getting $60 off like you are?
gaslightredditor
Thanks for the info. Just got 3 backs of each for about $85. It ended up being about $25 cheaper to get 3 smaller bags of each than to get a single large bag of each
9 Comments
The common lawn pre-emergents (prodiamine, pendimethalin, and dithiopyr) work to help reduce the germination of certain seeds… Mostly grasses and only a handful of broadleaf weeds. The labels will list which weeds are targeted. To prevent more broadleaf weeds, a specialty broadleaf pre emergent like isoxaben is required.
Pre-emergents work by preventing the germination of seeds of the target species. So in order to be effective, a pre emergent needs to be applied BEFORE those seeds germinate. For winter annual weeds (annual weeds that are present in the fall, winter, and spring, like poa annua), a pre emergent needs to be applied in the fall before soil temps fall below 70F. In order to prevent summer annual weeds (like crabgrass), a pre emergent needs to be applied in the spring before soil temps reach 55F. (In very southern areas, timing can be more closely tied with periods of higher moisture AND climbing soil temps. Consult your state extension service for more specific guidance)
Pre emergents will not kill existing weeds. Pre-emergents alone will rarely control a weed problem. Pre-emergents are tools to **reduce** the need for post-emergents. They rarely eliminate the need for post emergents.
The labels of pre emergents have many important instructions and use restrictions. ALWAYS READ THE ENTIRE LABEL. For example, you are limited to 2 applications of each active ingredient per year.
*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.*
Noticed this while cruising around the HD site just now. The promo only seems to be for Scott’s Turf Builder products and will stack if you get more than 1 bag of each. There’s also a $50 discount if you buy the larger sized bags.
You’re basically getting the yellow bag for $6 each. Pretty great deal IMO.
Great deal, thanks!!
Way overpriced for what you’re getting, even with the discount.
Those prices are insane. What discount?
Mega corp wins again… tempting. I’m checking out my local ace hardware today for prices
Might be better to just get regular fert with the other bag of halts. Granular post emergent hasnt been real effective for me like ever
Mine is only showing up as $40 off for a $73.86 total. Any reason why I’m not getting $60 off like you are?
Thanks for the info. Just got 3 backs of each for about $85. It ended up being about $25 cheaper to get 3 smaller bags of each than to get a single large bag of each