Knowing what weedy grass you have in your lawn or landscape is very important in being able to properly control it. Dallisgrass is a common perennial weed that is easily identified and grows in uneven clumps in lawns and turf. This growth pattern creates a tripping hazard as well as a poor playing surface for parks, front lawns, and athletic fields. Clumps must be dug out to prevent its growth. Solarization with clear plastic can help control dallisgrass.

For more details about the biology of dallisgrass, management methods, and extensive information about herbicides, see the newly updated Pest Notes: Dallisgrass, authored by UC Cooperative Extension emeritus advisors Michelle LeStrange and John A. Roncoroni. 

For information on other weeds, see the UC IPM web page on weed resources and weed identification tools at http://ipm.ucanr.edu/PMG/menu.weeds.html.

Mature dallisgrass plant, Paspalum dilatatum. [Credit: K Windbiel-Rojas]

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