Ask a Question forum: Weed Management Questions

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Sep 18, 2017 9:29 AM CST
We have fescue with many weeds. We just aerated and limed. We plan to re-seed shortly. Should we use pre-emergent now and then plant the seeds or skip the pre-emergent until Spring and just plant the seeds. Also, what fertilizer do we use with the seeds we plant? Thank you!
Name: Philip Becker
Fresno California (Zone 8a)
Sep 18, 2017 10:23 AM CST
Ortho weed-b-gone spray. Or a weed and feed granuales, will kill broadleaf weeds without harming grass. A pre-emergent kills any seed as seed starts to sprout, and you have to wait X number of days before re/seeding.
Isn't fescue evergreen ?
If So ! Your best choice would be, spray weed-b-gone before mowing. Wait a week or two. Scalp lawn. Plant seed and top seed with a little manure. Manure fertilizes and keeps birds from feasting on your grass seeds. Water in morning and evening . Thumbs up
Anything i say, could be misrepresented, or wrong.
Name: J.R. Baca
Pueblo West Co. ( High Dessert (Zone 6a)
Sep 18, 2017 3:47 PM CST
bethmcc, hello and Welcome!
Though we are from different zones and use a different grass seed ,now is just about the perfect time to aerate and reseed, but I would forgo the pre emergent because that would also work on the grass seed you put down. If the weeds are bad it would probably be a good idea to hit your yard with 2-4-D FIRST then AFTER a couple of weeks aerate and reseed. You could also wait until spring to use a broadleaf weedkiller.
Hope this helps.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Sep 18, 2017 9:44 PM CST
Pre-emergent works best on small seeds. And it works especially well on grass seed. Skip the pre-emergent.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

Name: Yardenman
Maryland (Zone 7a)
Sep 19, 2017 9:37 AM CST
MD here... I wouldn't plant grass seed AND use any form of herbicide at the same time. Alternate years.

Fescue is a great turf grass, but it doesn't spread. So after aerating (and I hope you mean plug removal because punching holes isn't worth doing), spread grass seed and 1/4" of compost if you can). Then next Fall spread some seed inhibitor like corn gluten (and the pellets beat the spray). You can spread corn gluten in the Spring too. There are spring-germinating weed seeds.

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