When fighting grassy weeds, you must wait a little longer to plant your grass seed, whether you’re seeding your entire lawn, overseeding or treating bare patches. With the Weed B Gone Plus Crabgrass Control, wait at least four weeks to plant seed. Because this is specially formulated to stop grassy weed seeds from germinating, it also can stop your regular grass seed from growing.
Although you can’t spread grass seed at the same time you spray your lawn with Weed B Gon, other options exist to treat your lawn for weeds at the same time you plant seed. These typically come in the form of weed and feed products that offer fertilizer along with the herbicide. Look for products specifically designed to be spread with grass seed, often noted on the label as a starter fertilizer plus weed control.
How long you must wait to plant grass seed after treating your lawn with a Scotts Weed B Gon product depends on which product you use. When fighting broadleaf weeds such as dandelions with the basic Weed B Gon weed killer, wait at least three weeks to sow your grass seed. This product specifically targets the seeds of broadleaf weeds, but it can stop or slow down your grass seed’s germination as well.
With Crabgrass Preventer
Keeping your lawn weed-free is a constant battle that uses cultural practices, such as deep waterings, to encourage grass to choke out weeds, as well as chemical products, such as using Weed B Gon, to kill weeds before they start. These chemicals often kill grass seed as well, keeping it from germinating along with the weed seeds, so wait before you sow your seed.
When you’ve already planted your grass seed and want to apply a pre-emergent herbicide to keep weeds from competing with your new grass for water and nutrients, have a little patience. Applying a weed-control product such as Weed B Gon too soon can kill young grass. Instead, wait until you’ve mowed the new grass at least three times before using herbicides on your lawn.
I just sprayed today, and it’s supposed to rain in 2 days (and a few days in a row). I was hoping I could toss down the grass seed tomorrow before rain, but I wasn’t sure if that’s too soon, or if it matters with this particular chemical.
I’m not concerned about getting it perfect. If 10% of the seed I put down comes up and starts to spread over the years, I’d consider that a win. Every amount above that certainly welcome, but.
Can I over-plant grass seed a day after spraying Ortho Weed B Gon? If not, how long do I need to wait (and why)?
I live in area code 45044. I just applied Turf Builder with Halts Crabgrass Preventer. I already have a lot of crabgrass in my front yard. I was wondering if I applied this too late to see results with the crabgrass? Should I try Ortho Weed-B-Gon, and if so when should I apply this after I’ve applied the Turf Builder?
For all of you who have this lawn question and to make it easier for you to find the info without going on a treasure hunt through my older blog postings, I am going to make it easier to find the answer. Click here to read my March 28 post: Feed, Weed, or Seed? … My most read posting this spring.
Thank you for the detailed and prompt reply. I am going to drop some tomorrow night.
Thanks for the info. So if I do the crabgrass preventer this week when should I try to grow grass in the bare spots and what products should I use? Also any recommendation on products and timing of grub control?Thanks.
I live in 05452. We have very sandy soil which was taken over by crabgrass last summer. Not even sure where to start? What are your thoughts, when do I do what? Also what are your thoughts on aerating? Thanks. Laura