Plant Diseases, Gardening & Pests, Lawn & Garden

Almond Leaf Scorch

Almond leaf scorch is a bacterial disease that kill otherwise healthy trees -- or, if undetected and untreated, entire orchards -- within just a few years. Learn to recognize the disease and take action early to save your trees and your livelihood.

Publication Number:: 8106

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Alternaria Diseases

Apples, broccoli, tomatoes, citrus, and a wide variety of other food crops are susceptible to Alternaria diseases. Learn how to recognize symptoms and control outbreaks.

Publication Number:: 8040

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Anthracnose: Pest Notes for Home and Landscape

Anthracnose, often called leaf, shoot, or twig blight, is a group of diseases found on many deciduous and evergreen trees and shrubs. Some trees such as sycamore, ash, and evergreen elms can be noticeably blighted.

Publication Number:: 7420

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Apple and Pear Scab: Pest Notes for Home and Landscape

Apple and pear scab, caused by the fungus Venturia inaequalis, is generally considered a serious disease of apples and pears in California, causing loss or severe surface blemishing of fruit.

Publication Number:: 7413

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Armillaria Root Rot: Pest Notes for Home and Landscape

Armillaria root rot is a disease of trees and woody plants, although it also affects palms, succulents, ferns and other herbaceous plants. It is commonly recognized by the presence of light brown mushrooms which typically appear in a cluster at the base of infected trees or shrubs.

Publication Number:: 74171

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Asian Citrus Psyllid & Huanglongbing Disease: Pest Notes for Home and Landscape

About the size of an aphid, Asian citrus psyllid (ACP) can carry Huanglongbing (HLB) disease, which poses a serious threat to citrus trees grown in California's home gardens and farms. Learn to identify and manage this pest and the disease it carries.

Publication Number:: 74155

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Bordeaux Mixture: Pest Notes for Home and Landscape

Bordeaux mixture is a fungicide and bactericide that can be used to control some diseases of tree fruits and nuts, vine fruits, and ornamentals. Its ability to weather rain and adhere to plants makes it an excellent choice as a winter fungicide.

Publication Number:: 7481

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Cherry Crinkle-Leaf and Deep Suture Disorders

Crinkle-leaf (bull trees, unproductive cherry, or male trees) and deep suture are are widespread and damaging disorders of sweet cherry fruit. Learn how to identify and control these two disorders.

Publication Number:: 8007

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Citrus Bacterial Canker Disease and Huanglongbing (Citrus Greening)

Citrus canker and huanglongbing (HLB, or citrus greening) are two serious diseases that affect crops around the world, but have not yet infected California groves. Find out how to keep these diseases out of the state.

Publication Number:: 8218

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Damping-Off Diseases

Damping-off diseases affect crops worldwide. Learn the basics on how these fungal diseases spread and what you can do to stop them.

Publication Number:: 8041

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Damping-Off Diseases in the Garden: Pest Notes for Home and Landscape

Damping-off diseases can attack seeds before they germinate, kill shoots before they emerge, or rot the stems of seedlings at the soil line. Find out how to guard against these insidious diseases that can stop your garden before it even starts.

Publication Number:: 74132

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Fire Blight: Pest Notes for Home and Landscape

Fire blight is a common and frequently destructive bacterial disease of pome fruit trees and other related plants. Pear and quince trees are extremely susceptible. Apple and crabapple are also frequently damaged.

Publication Number:: 7414

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Lawn Diseases: Prevention and Management: Pest Notes for Home and Landscape

Maintaining a healthy lawn is the best way to prevent a disease outbreak in a turfgrass. 75 to 85% of common lawn diseases can be avoided by optimizing practices to avoid stressed grass, which is more susceptible to disease outbreaks.

Publication Number:: 7497

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Nursery Guide for Diseases Caused by Phytophthora ramorum on Ornamentals. . .

Many ornamental plants are susceptible to infection, and the pathogen can be moved long distances through shipments of infected nursery stock. Federal and state quarantines are in effect that require nursery inspections.

Publication Number:: 8156

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Oleander Leaf Scorch: Pest Notes for Home and Landscape

Oleander leaf scorch is a disease found mainly in southern California. It is caused by the bacterium Xylella fastidiosa, which is the same species (although a different strain) that causes Pierce's disease of grapevines and almond leaf scorch. Oleanders

Publication Number:: 7480

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Palm Diseases in the Landscape: Pest Notes for Home and Landscape

Several major diseases can attack palm trees in California. Some come on gradually; others (like Sudden Crown Drop) are catastrophic. Learn to plant the right palm in the right place and then use an IPM approach to monitor and prevent potential disease.

Publication Number:: 74148

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Peach Leaf Curl: Pest Notes for Home and Landscape

Leaf curl, also frequently referred to as peach leaf curl, affects the blossoms, fruit, leaves, and shoots of peaches, ornamental flowering peaches, and nectarines, and is one of the most common disease problems for backyard gardeners.

Publication Number:: 7426

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Peach Rust Caused by Tranzschelia discolor in California

Peach Rust Caused by <I>Tranzschelia discolor</I> in California

Peach rust is a problem in every peach-growing area of California, but causes the greatest damage in the Sacramento Valley. Color photos and descriptions in this publication help you identify the disease and the conditions that encourage its development.

Publication Number:: 8011

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Phytophthora Root and Crown Rot in the Garden: Pest Notes for Home and Landscape

Almost all fruit and nut trees, as well as most onamental trees and shrubs, can develop Phytophthora rot. Learn about simple steps you can take to help prevent this potentially fatal plant disease.

Publication Number:: 74133

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Pitch Canker: Pest Notes for Home and Landscape

Pitch canker is a disease of pine trees that is caused by the fungus Fusarium circinatum. The tips of infected branches wilt as a result of obstructed water flow, causing the needles to turn yellow, and then red.

Publication Number:: 74107

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Powdery Mildew on Fruits and Berries: Pest Notes for Home and Landscape

Powdery mildew is a common disease on many types of plants. It can be serious on woody species such as grapevines, caneberries, and fruit trees where it attacks new growth including buds, shoots, and flowers as well as leaves.

Publication Number:: 7494

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Powdery Mildew on Ornamentals: Pest Notes for Home and Landscape

Powdery mildew can be serious on woody species such as rose, crape myrtle, and sycamore where it attacks new growth including buds, shoots, and flowers as well as leaves.

Publication Number:: 7493

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Powdery Mildew on Vegetables: Pest Notes for Home and Landscape

A wide variety of vegetable crops are affected by powdery mildews, including artichoke, beans, beets, carrot, cucumber, eggplant, lettuce, melons, parsnips, peas, peppers, pumpkins, radicchio, radishes, squash, tomatillo, tomatoes, and turnips.

Publication Number:: 7406

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Roses in the Garden and Landscape: Diseases and Abiotic Disorders

A variety of pathogens may attack roses including powdery mildew, rust, and black spot. In addition, roses may display similar symptoms from abiotic disorders that are the result of chemical toxicities, mineral deficiencies, or environmental problems.

Publication Number:: 7463

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