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


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.



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?

Black Fig Fly: A New Invasive Pest

Figure 1. A black fig fly laying eggs inside a green fig.

The black fig fly is a new invasive species recently found in Southern California. It has been found in fig orchards in Los Angeles, Orange, Riverside, Santa Barbara, San Bernardino, San Diego, and Ventura counties. This small insect attacks only figs...

Today is #GivingTuesday

Giving Tuesday

It's #GivingTuesday!- a global day of giving that harnesses the collective power of individuals to celebrate generosity worldwide. We invite you to kick off the holiday season with us! If you've watched a UC IPM webinar, read our newsletter, or...

Garden Tasks for Fall and Winter

J Auerbach

With the cooler weather, gardening tasks may be slowing down some, but there are still plenty of things to do in the garden and landscape in the fall and winter months. Here are a few things to think about as you head into the next planting season....

Giving Tuesday is November 30


  Join us for #GivingTuesday, a day of giving to celebrate generosity worldwide. UC IPM helps residents, growers, land managers, community leaders, and other pest management professionals prevent and solve pest problems.   With your...

New Resource: Home & Garden Pest Newsletter

Vegetable Garden

UC IPM's Urban & Community program has a new newsletter! The Home & Garden Pest Newsletter (which replaces the Retail Nursery & Garden Center IPM News) is designed to help provide California residents with the latest pest...

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