Center for Landscape & Urban Horticulture
University of California
Center for Landscape & Urban Horticulture

Welcome!

Oak Trees on Golf Course
Welcome to the Center for Landscape and Urban Horticulture (CLUH), an information resource of the University of California Cooperative Extension (UC Cooperative Extension). The CLUH supports UC Cooperative Extension educational and applied research programs serving California's environmental horticulture industry. This site features science-based information on:

 

Please review our Mission Statement.

 

Low Water Landscape
For the latest science-based information on landscape water needs, please visit our pages under Landscape Water Conservation and Irrigation Management.

 

 

 

Cactus Garden LA Arboretum
Information is contributed by University of California Cooperative Extension scientists. All content is reviewed by these or other experts to assure it is authoritative and science-based. Featured are summaries of technical topics, fact sheets, newsletters, reports, commentary, and web links.

 

 

Calif. water use pie chart 2015
THE 9%: Landscape irrigation accounts for just 9% of water use in California, yet landscapes are under relentless attack as California confronts ongoing drought.  The facts presented here show how these attacks are misguided and that there are ways to conserve water without degrading landscape plantings.

 

Does the landscape you manage have a water budget or water conservation goal that seems impossible to meet? Read about Five Simple Steps for Conserving Landscape Water.

Wet_grass

 

For Home Gardening information and resources, please visit the University of California Garden Web 

Raised Bed Gardening

What's new in Landscape and Urban Hort?

What to do when Ants Invade

Odorous house ant. (Dong-Hwan Choe)

If you've ever had ants come indoors, you know what a nuisance they can be when they crawl across kitchen countertops, invade your pet's food bowl, and get into garbage cans. So, what should you do? Outsmart the ants. Ants are usually looking for food,...

What's that Sticky Stuff on my Car?

Whitish wax and sticky honeydew from woolly hackberry aphid on hackberry tree. (Jack Kelly Clark)

It's hot outside, so like a lot of people, you try to park your car under a tree in parking lots and on the street for some shade. You choose to park under a big hackberry tree, but when you return to your car, you notice droplets on your windshield and...

Best Tips for Mosquito Protection

Mosquito larvae on the surface of water. (Jack Kelly Clark)

Record-breaking heat continues to scald California, leading many of us to water our landscapes and gardens more. While the water is good for plants and helps us cool down, even the smallest amount of standing water mixed with high...

Citrus Greening Disease Quarantine Extended

Leaf yellowing in one-quarter of citrus tree canopy due to huanglongbing. (M.E. Rogers)

Alert from CDFA Plant Health and Prevention Services The California Department of Food and Agriculture (CDFA) and the United States Department of Agriculture (USDA) have established a 94-square mile quarantine in portions of Riverside and San...

Beware of Poison Oak

Poison oak leaves and flowers. [Jack Kelly Clark]

Summer is a great time for outdoor activities like camping, hiking, and backpacking. During your adventures in natural areas, be on the lookout for poison oak. Poison oak, a well known plant for most people in California,  is widespread in our state...

Page Last Updated: September 21, 2017
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