A Lawn in Winter

January 1, 2004

By Mary Giambalvo, Master Gardener


Generally, plants I trouble to grow must provide food, fragrance, or flowers.  I confess, however, to maintaining a kerchief-size lawn that gives me little more than a soft place to kneel while weeding and a site to showcase gopher hillocks.  Still, I need a touch of turf in my life.

It is true, though, that sweeping lawns prevail in most American neighborhoods, replete with competition for most lush and best clipped.  To some, that might mean intense watering, fertilizing, weed-killing and buzz haircuts year-round.  The result can be downright unhealthy for the lawn and the environment.

Winter in
California is a good time to let the lawn and its caretaker relax a bit.  Rains usually help flush salts down past root zones, and cool temperatures slow growth and the need for excess manual watering.  It also lessens the need for that onerous chore, mowing.

Fertilizing lawns in winter defeats nature’s rhythm, stimulating new growth long before it should happen.  With Bermuda grass, this can even bring on spring dead spot disease, creating large bare areas.  Should there be a cold snap, a winter-fertilized lawn will be more susceptible to frost damage as well - new growth doesn't like the cold.

During our winter rainy season, applying fertilizers and weed killers to our lawns tend to result in excess run-off, not only wasting the products but polluting our ground water and creeks as it flows into streets and gutters and, finally, our water supply.

In the
California Central Coast region the recommended months for feeding warm-season grasses such as Bermuda grass and St. Augustine are May, June, September, and October.  For cool season grasses such as annual ryegrass, tall fescue and Kentucky bluegrass, the optimum times to fertilize are May, September, and October.  Be sure to follow the label for quantities.  More, when it comes to food and pesticide, is not better.

While my wee bit of grass will never win a garden prize, it gives me what I need - a spot of green on which to recline in summer and much needed time off in winter.

For additional assistance in caring for your lawn and garden year-round, visit the following online site: http://anrcatalog.ucdavis.edu/specials.ihtml

University of California Cooperative Extension Master Gardener Volunteers can provide additional gardening information upon request.  Call the San Luis Obispo office at 781-5939 on Mondays and Thursdays from 1 to 5 PM, the Arroyo Grande office at 473-7190 on Wednesdays from 9 AM to 1 PM, or the Paso Robles office at 237-3100 on Wednesdays from 9 AM to Noon.  The San Luis Obispo Master Gardener website is at http://groups.ucanr.org/slomg/.  Questions can be e-mailed to mgsanluisobispo@ucdavis.edu.