Weed Control: Preemergent

When the weather is cold, it is sometimes difficult to begin thinking about lawn care. But, February is upon us which means it is time to start thinking about weed control: preemergent.

Below are some basic weed control suggestions. READ AND FOLLOW ALL LABEL DIRECTIONS.

For Fescue: Early February – Early March

Preemergent Grass Control – (pick only one, products with “**” are best, REMEMBER DO NOT APPLY PRIOR TO SEEDING OR LAYING SOD). A second application may be needed, see labels for details.
bensulide (BETASAN®️, SCOTT’S WEEDGRASS PREVENTER®️)
dithiopyr** (DIMENSION®️) – preemergent activity
pendamethalin** (SCOTT’S HALTS®️ and many others)
prodiamine** (BARRICADE®️) – on fertilizer particle
oryzalin** (SURFLAN®️) – if Kentucky bluegrass is present, consider another herbicide
oryzalin+benefin (XL2G®️, AMAZE®️) – if Kentucky bluegrass is present, consider another herbicide
siduron (TUPERSAN®️) – use only if seeding in spring and in fescue, bluegrass, or ryegrass only. TUPERSAN®️ is weak but is the only preemergent herbicide that can be used at seeding time on cool-season turf grass.

Preemergent Broadleaf Control

isoxaben (GALLERY®️, PORTRAIT®️)


For Bermuda

Preemergent Crabgrass Control – February 20 to March 5 (pick only 1, products with “**” are best)
bensulide (BETASAN®️, SCOTT’S WEEDGRASS PREVENTER®️)
dithiopyr** (DIMENSION®️) – preemergent activity
pendamethalin** (SCOTT’S HALTS®️ and many others)
prodiamine** (BARRICADE®️) – on fertilizer particle
oryzalin** (SURFLAN®️) – on fertilizer particle
oryzalin+benefin (XL2G®️, AMAZE®️)

Preemergent Broadleaf Control – August 25 to September 15
isoxaben (PORTRAIT®️) – fall use to prevent winter broadleaf weeds