The University of Arizona

College of Agriculture and Life Sciences

Improving Lives, Communities and the Economy

Overseeding our lawns with ryegrass

UA Cooperative Extension Pinal County

Rick Gibson, UA Cooperative Extension
If you want a spot of green lawn in your yard during the coming winter months, early October is the best time to switch your heat-loving summer lawn to a cool weather grass by overseeding. A little patch of lawn is considered to be okay in low water-use landscapes but there is no currently available lawn turf that will stay green and growing year round. In the summer, Bermuda grass hybrids grow well and are generally hardy but they go dormant during the winter months. On the other hand, winter grasses, like annual and perennial ryegrass, cannot take the heat and dry of our summers.