Common Questions About Crabgrass Germination and Preemergence Herbicides Answered

This time of year many have questions about crabgrass germination and control. Below are several previous Purdue turf tips that answer the most commonly asked questions about crabgrass control.

1. When will crabgrass germinate?
2. When should I apply my preemergence herbicide (crabgrass preventer)?
3. Which preemergence herbicide should I use? - Professionals
4. How to Select a Crabgrass Preventer from the Store – Homeowners 
5. How do I control crabgrass in spring seeded turf?
6. Do split applications provide better control than a single application?
7. How to identify crabgrass?
8. How will the cool spring affect crabgrass control? Originally posted April 22, 2011
9. How might a late frost affect crabgrass?

Forsythia blooms are an indicator that crabgrass germination is just around the corner. See the link above "When will crabgrass germinate?"

Newly germinated large crabgrass plant. Photo taken in spring of 2012.

For more information on weed control, search this blog (search box in upper left corner of page) and archived turf tip postings and check out our Turfgrass Weed Control for Professionals Publication

Aaron Patton, Turf Extension Specialist