Weed Control
How to Get Rid of Quackgrass: Wipe, Do Not Spray
Wisconsin Extension: selective herbicides are rarely an option. So the fix is a wiped, not sprayed, application of a non-selective — and once is not enough.
Topic collection
Grassy Weeds & Sedges
Why won't my weed killer touch this grass-like weed?
Crabgrass, dallisgrass, goosegrass and nutsedge are the weeds standard broadleaf products cannot control, and each needs a different active ingredient. These guides cover identification, product selection and the pre-emergent timing that prevents them.
6 guides in this collection ·All Weed Control
Weed Control
How to Kill Bermuda Grass in a Fescue Lawn: Mow It Out First
Virginia Tech: tall fescue can completely kill bermudagrass at a 4-inch mowing height with no herbicide. Mow lower and no product will save you.
Weed Control
Poa Annua: How and When to Kill Annual Bluegrass
Poa annua germinates in autumn, so the window to stop it closes in September — and on a cool-season lawn it is the same window you seed in. Not both.
Weed Control
Dallisgrass vs Crabgrass: One Comes Back Every Year
Dallisgrass and crabgrass look alike and need opposite strategies: crabgrass dies at frost, dallisgrass comes back from the same crown for years.
Weed Control
How to Get Rid of Crabgrass: Timing Beats Chemicals
Crabgrass is a timing problem — but one pre-emergent pass is not a whole season. UF/IFAS: season-long control takes a second application 6–9 weeks later.
Weed Control
How to Get Rid of Nutsedge: One Pull Does Nothing
Nutsedge ignores ordinary weed killer because it is a sedge. UC IPM: one pull does nothing — but pulling every 2 to 3 weeks drains the tuber underneath it.
Related collections
Other Weed Control topics worth reading next.
Weed Identification
What weed is this, and which product family actually kills it?
Broadleaf Weeds
How do I kill weeds without killing my grass?
Pre-Emergent Timing
When exactly should I apply pre-emergent where I live?
Total & Non-Selective Herbicides
What do I use where I want nothing growing at all — and why did it come back?
Pasture & Acreage
I have more than a lawn — what changes when animals graze it?
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