Andy from Omaha, Ne writes
Application timing will vary by region and the best person to ask about application timing is your local master gardener who works at your local cooperative extension office.
Resolute 65 WG is a pre-emergent only and will not kill any actively growing crabgrass. It should be applied before the crabgrass has germinated to prevent it from sprouting. Application timing will vary by region and the best person to ask about application timing is your local master gardener who works at your local cooperative extension office. For actively growing crabgrass you should use something like QuinKill Max. Please refer to the product label for complete instructions and to confirm it can be used on your lawn type.
Answer last updated on: 08/25/2015
