How to Manage Pests

Weeds occur in all lawns but seldom become problems in well-managed, healthy turfgrass. Poor maintenance practices, such as improper fertilization, watering, and mowing, can weaken turfgrass and predispose it to weed invasion. Total eradication of weeds is not realistic or necessary for most lawns. With good management practices, a lawn can be vigorous and attractive with little or no herbicide use.

• Different weeds require different management approaches.
• Also, many weed species are associated with a lawn care condition, such as over watering, compacted soil, or low fertility.
• Identifying the species present can give an indication of an underlying lawn care problem, which can be corrected.

• Make sure you are growing an appropriate turfgrass species for your area.
• Regularly check sprinkler heads.
• Water deeply and infrequently.
• Mow regularly and remove no more than 1/3 of the leaf blade at each mowing.
• Fertilize about 4 times a year with no more than 1 lb of actual nitrogen per 1,000 sq. ft. per application.
• If needed, alleviate soil compaction with aeration.
• Remove thatch if it exceeds 1/2 inch thick.
• See the UC Guide to Healthy Lawns at www.ipm.ucdavis.edu for complete information on lawn care

• Identify the weed species.
• Determine if there is an underlying lawn care problem, such as improper irrigation, mowing or inadequate fertilizer, and correct it.
• Remove weeds by hand as you see them, when they are young and before they flower, set seed, form vegetative parts, and spread into patches.
• Use herbicides as a last resort, and combine with proper cultural control.
• If used, choose an herbicide labeled for the species of weed you are trying to control and one that is safe for use on your turf type.
• Avoid fertilizer products containing herbicides.
• Renovate or replace weak areas of lawn with vigorous new turf.
• Refer to Pest Notes: Weed Management in Lawns for more details.

What you use in your landscape affects our rivers and oceans!