Many turf areas required dormant seeding or seeding this spring to help repair damage from last summer and fall. Weed germination is just around the corner and may be problematic on thin turf. Almost all herbicides will affect turfgrass seedlings and application delays are usually needed following seeding. Following is information gleaned from available labels of most herbicides or herbicide types that would be used in Indiana. This is intended to provide a general idea of the limitations of each active ingredient. Since different formulations of the same active ingredient may have different precautions and labels of post-patents may differ from proprietary products, please refer to the actual label of your specific product prior to use.
|
Herbicide type |
Example brand name |
Common name |
Label statements for use over newly seeded turf |
|
Preemergence annual grass |
Barricade |
prodiamine |
Wait 60 days after seeding or until after the second mowing, whichever is longer |
|
Preemergence annual grass |
Pendulum |
pendimethalin |
Applications made after turf has filled in and at least 4 mowings |
|
Preemergence annual grass |
PreM |
pendimethalin |
Use only on well established turfgrass with a dense and uniform stand |
|
Preemergence annual grass |
Ronstar |
oxadiazon |
Apply to established turf only |
|
Preemergence annual grass |
Team |
benefin/trifluralin |
Apply to established turf only |
|
Preemergence annual grass |
Tupersan |
siduron |
Can be applied prior to seeding cool-season grasses and anytime after germination |
|
Pre- and postemergence annual grass |
Dimension |
dihiopyr |
Applications to well-established turf with good root system and uniform stand and has received at least two mowings |
|
Postemergence annual grass |
Drive |
quinclorac |
Can be applied 7 days prior to seeding on any cool season turfgrass. Can be applied anytime after seeding on tall fescue, but must wait 28 days after emergence of creeping bentgrass, perennial ryegrass, or Kentucky bluegrass. |
|
Postemergence annual grass |
Acclaim Extra |
fenoxaprop |
Limited to 9 oz/A on Kentucky bluegrass that has tillered and has emerged for 1 month. Can be applied to tall fescue, fine fescue, perennial ryegrass that is at least four weeks old. |
|
Postemergence annual grass |
Target |
MSMA |
Do not treat until after the third mowing. |
|
Postemergence crabgrass, creeping bentgrass, etc |
Tenacity |
mesotrione |
Prior to seeding, or four weeks or two mowings after emergence whichever is longer |
|
Postemergence broadleaf |
Most products |
2,4-D, dicamba, MCPA, MCPP, triclopyr, fluroxpyr |
Newly seeded turf should be mowed 2-4 times prior to treatment. |
|
Postemergence broadleaf |
Quicksilver |
carfentrazone |
No restrictions |
|
Postemergence nutsedge |
SedgeHammer |
halosulfuron |
Applications limited to well-established turf with good root system and uniform stand. |
|
Postemergence nutsedge |
Basagran |
bentazon |
Do not apply until well established. |
|
Postemergence nutsedge, etc |
Certainty |
sulfosulfuron |
Recommended for use only on established stands |
|
Postemergence nutsedge, etc |
Dismiss |
sulfentrazone |
Established turf areas only |
|
Postemergence annual bluegrass in creeping bentgrass |
Velocity |
byspribac |
Applications can be made 42 days after emergence of bentgrass |