Weeds & Unwanted Plants, Gardening & Pests, Lawn & Garden

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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Aquatic Gardens, Not Aquatic Pests: How to Practice Responsible Water Gardening

California Master Gardener Tip Sheet. A water garden can be a beautiful thing, but you need to avoid growing invasive water plants that can spread into natural waterways. Three mini-posters, five pages of text, plus links to useful resources.

Publication Number:: 8369

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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 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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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 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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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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Creeping Woodsorrel and Bermuda Buttercup: Pest Notes for Home and Landscape

Creeping woodsorrel is a major weed in lawns, flower beds, nurseries, gardens, and greenhouses. A related species, Bermuda buttercup, is grown as an ornamental. Once planted it spreads throughout a garden, competing with other plants.

Publication Number:: 7444

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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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Field Bindweed: Pest Notes for Home and Landscape

Field bindweed, Convolvulus arvensis, is a native of Eurasia and was first documented in California in 1884. By the first quarter of the twentieth century, field bindweed was proclaimed the worst weed in California.

Publication Number:: 7462

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Getting a Handle on Broom: Scotch, French, Spanish, and Portuguese Brooms

Scotch broom and related plants can aid in erosion control and improve soil nitrogen content, but they can also be formidable as weeds. This publication tells how and where broom grows best and gives tips on how to keep it under control.

Publication Number:: 8049

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Green Kyllinga: Pest Notes for Home and Landscape

Green kyllinga (Kyllinga brevifolia) is a weedy sedge that can be a major weed problem for turfgrass and landscape managers. In turf it forms a weak sod that gives poor footing for athletic fields and golf courses.

Publication Number:: 7459

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Herbicide Resistance: Definition and Management Strategies

An herbicide ceases to be a useful tool for farmers when its target weeds develop resistance to its effects. This publication helps you understand resistance: what causes it, and how you can slow or prevent its development.

Publication Number:: 8012

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Invasive Plants: Pest Notes for Home and Landscape

Invasive plants are a distinct group of weeds that occur in natural habitats. This Pest Note shows how invasive plants differ from common garden and agricultural weeds and discusses their occurrence, impact, spread, and management.

Publication Number:: 74139

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Kikuyugrass: Pest Notes for Home and Landscape

Kikuyugrass is an aggressive perennial weed of turfgrass, ornamental plantings, orchards, and noncrop areas in California. It is well adapted to warm, temperate climates such as those of the coast and inland valleys of southern and central California.

Publication Number:: 7458

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Mallows: Pest Notes for Home and Garden

Weedy mallow plants are found growing widely in California. Although some of the wild mallow species can be eaten, mallows are less than desirable when found growing in crop fields, orchards, lawns, gardens, and landscapes.

Publication Number:: 74127

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Mistletoe: Pest Notes for Home and Landscape

Identification, life cycle, damage, and management of this evergreen parasitic plant that grows on a number of landscape tree species in California.

Publication Number:: 7437

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