To whom does this seedhead belong? – Turfgrass Science at Purdue University

To whom does this seedhead belong?

Kentucky bluegrass (Poa pratensis) is beginning to produce seedheads this time of year which are difficult to mow and can cause a lawn to appear uneven. However, there are other grasses such as annual bluegrass (Poa annua) that also produce similar looking seedheads. Annual bluegrass is a winter annual or weak perennial turfgrass species which invades highly managed lawns and often dies during summer heat and drought leaving behind a lack-luster lawn. Annual bluegrass usually has a lighter lime-green color than Kentucky bluegrass, but for a positive identification you need to take a closer look at the ligule. The ligule is an appendage at the base of the leaf blade that is long and membranous (it looks like scotch tape) on annual bluegrass, but is short or absent on Kentucky bluegrass. If you do suspect that annual bluegrass has invaded your lawn, then see the linked publication below for more information on identifying and controlling annual bluegrass.

http://www.agry.purdue.edu/turf/pubs/AY-41-W.pdf

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Aaron Patton, Assistant Professor/Turfgrass Extension Specialist

 Categories:

Share This Article
Disclaimer: Reference to products is not intended to be an endorsement to the exclusion of others which may have similar uses. Any person using products listed in these articles assumes full responsibility for their use in accordance with current directions of the manufacturer.
Turfgrass Science at Purdue University - Horticulture & Landscape Architecture, 625 Agriculture Mall, West Lafayette, IN 47907

© 2021 Purdue University | An equal access/equal opportunity university | Copyright Complaints | Maintained by Turfgrass Science at Purdue University

If you have trouble accessing this page because of a disability, please contact Turfgrass Science at Purdue University at kkalbaug@purdue.edu.