Weeds, Pests, Diseases, Integrated Pest Management

Annual Bluegrass: Pest Notes for Home and Landscape

Annual bluegrass is one of the most common weeds of turf, ornamental plantings, and gardens in the United States. Commonly referred to as "Poa," it is a particular problem in golf course greens and fairways.

Publication Number:: 7464

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Aquatic and Riparian Weeds of the West

Lavishly illustrated with over 560 photographs and weighing in at 442 pages, this is a “must-have" field manual for weed control specialists, land managers, water system managers, rice growers, golf course superintendents, naturalists, and landscape professionals.

Publication Number:: 3421

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Avoiding Weed Shifts and Weed Resistance in Roundup Ready Alfalfa Systems

Glyphosate-resistant alfalfa can reduce weed-control costs and potentially improve the quality of your harvested crop. Learn the proper management steps you need to take to help prevent weed shifts and herbicide resistant weeds.

Publication Number:: 8362

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Barb Goatgrass

Barb goatgrass is a winter annual grass native to Europe and western Asia. It first appeared in California in the early 1900s, but only recently has it begun to spread widely, crowding out native vegetation. Learn to identify and manage this hardy weed.

Publication Number:: 8315

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Barb Goatgrass and Medusahead: Timing of Grazing and Mowing Treatments

Barb goatgrass and medusahead are invasive annual grasses that cause economic or environmental detriment. Learn how to identify the optimum timing of grazing and mowing treatments for management in your situation.

Publication Number:: 8567

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Bermudagrass: Pest Notes for Home and Landscape

Bermudagrass (Cynodon dactylon) is a plant that is grown as a turfgrass or as forage for livestock, but it also can be an invasive weed. It is found in most areas of California at elevations below 3,000 feet.

Publication Number:: 7453

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Biology and Management of Horseweed and Hairy Fleabane in California

Horseweed and hairy fleabane are showing increased resistance to chemical controls, including glyphosate. By learning about their biology and other control alternatives, you can do a better job of keeping on top of this pest problem.

Publication Number:: 8314

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Biology and Management of Johnsongrass (Sorghum halepense)

Johnsongrass (Sorghum halepense) is a summer perennial grass native to the Mediterranean region that escaped cultivation and is now classified in California as a “C” list noxious weed.

Publication Number:: 8569

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Brooms: Pest Notes for Home and Landscape

Scotch broom and other brooms are non-native shrubs that compete with California wildflowers. First planted by gardeners in the 1800s, brooms have since spread into wild areas. Learn to identify brooms and eliminate them from the landscape. Color photos.

Publication Number:: 74147

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Burning and Stinging Nettles: Pest Notes for Home and Landscape

Burning nettles and stinging nettles are aptly named plants that cause a painful rash when they contact human skin. They can be a nuisance or even a health hazard to hikers or outdoor workers. Learn to identify and manage these troublesome plants.

Publication Number:: 74146

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Catchweed Bedstraw: Pest Notes for Home and Landscape

Catchweed bedstraw is a troublesome agricultural weed that also shows up in the garden, where it competes for water and nutrients. The tiny, curved hairs on stem and leaf help bedstraw to form a dense mat. Learn to identify and manage this weed.

Publication Number:: 74154

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Chickweed: Pest Notes for Home and Landscape

Two species of chickweed, common (Stellaria media) and sticky (Cerastium glomeratum), are widespread in California. Both are winter annuals that grow easily in gardens, low-maintenance lawns, and agricultural areas.

Publication Number:: 74129

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Clovers: Pest Notes for Home and Landscape

Clover can be a concern in turfgrass or landscaped areas.

Publication Number:: 7490

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Common Groundsel: Pest Notes for Home and Landscape

Common groundsel or old-man-of-the-spring is found throughout California. It can cause chronic liver poisoning to horses, cattle, and swine, even if only a small amount is eaten over a few weeks.

Publication Number:: 74130

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Common Knotweed: Pest Notes for Home and Landscape

Common knotweed, also called wiregrass or doorweed, is an annual species most often found in compacted soils. It is particularly well adapted to the winter and early spring rainfall pattern throughout California.

Publication Number:: 7484

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Common Purslane: Pest Notes for Home and Landscape

Common purslane is a weedy summer annual that invades gardens, low-maintenance lawns, commercial orchards, and vegetable crop production areas. It is particularly well adapted to the warm, moist conditions found in irrigated sites.

Publication Number:: 7461

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Conservation Tillage and Weed Management

"Conservation tillage" is an approach to soil management that balances the short-term need for a profitable crop with the long-term need for sustainably healthy ground.

Publication Number:: 8200

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Cover Crops for Walnut Orchards

This handy publication discusses the benefits of cover cropping as well as the challenges of cover cropping that are unique to walnut orchards.

Publication Number:: 21627e

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Crabgrass: Pest Notes for Home and Landscape

Crabgrass is a common weed that almost everyone knows. There are two species of crabgrass common in California: smooth crabgrass and large or hairy crabgrass. Crabgrass also has many other names including crowfoot grass and summer grass.

Publication Number:: 7456

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Dallisgrass: Pest Notes for Home and Landscape

Dallisgrass, Paspalum dilatatum, is a warm-season perennial bunch grass that was introduced into the United States from South America in the 1800s for use as a forage plant. It is now a troublesome weed that has naturalized throughout much of California.

Publication Number:: 7491

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Dandelions: Pest Notes for Home and Landscape

Dandelion (Taraxacum officinale), also known as lion’s tooth, puffball, blowball, and monk’s head, is a major problem in turf, ornamental plantings, meadows, pastures, and alfalfa.

Publication Number:: 7469

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Distinguishing Johnsongrass and Young Summer Grass Weeds

Johnsongrass (Sorghum halepense) a summer perennial grass, is one of the world’s most noxious and economically important weeds. This guide aids in identifying and distinguishing johnsongrass and other grass species that appear similar when immature.

Publication Number:: 8570

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Dodder: Pest Notes for Home and Landscape

Dodder is a parasitic annual plant that infests many crops, ornamentals, native plants, and weeds; it is found on many crops including alfalfa, asparagus, melons, safflower, sugarbeet, and tomato.

Publication Number:: 7496

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Dyer's Woad: Integrated Pest Management for Land Managers

Dyer’s woad (Isatis tinctoria) is a problematic, invasive weed in the intermountain west. It can be commonly found along roadsides, fencerows, and ditch banks, as well as in pastures, rangeland, and natural areas.

Publication Number:: 74175

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