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?

Still Seeing Aphids on Your Plants?

Rose aphids infesting a blossom. (Photo: Jack Kelly Clark)

Are you surprised to see aphids on some of your plants this time of year? With the current mild temperatures in California, aphids may continue living and reproducing in some locations this winter, with female adults giving birth to live young every...

Webinar on Healthier Homes and Communities - 01/23

A small flashlight is used to inspect underneath a kitchen sink for ants and ant entry points.  (Photo: Cheryl A. Reynolds)

Register for the U.S. EPA Webinar: It Takes an Integrated Pest Management Village - IPM for a Healthier Home and Community Date: Tuesday, January 23, 2018Time: 2:00 – 3:00 p.m. ET (11:00 a.m. – 12:00 p.m. PT), Followed by a live...

Redhumped Caterpillar Publication Revised

Two redhumped caterpillar larvae on a plum branch. (Photo: Belinda Messenger-Sikes)

The redhumped caterpillar is a familiar pest on fruit and nut trees such as plum, almond, cherry, and apple, as well as on ornamental trees like liquidambar and birch. It can reach high populations in California's Central Valley, sometimes defoliating...

Time to Treat for Peach Leaf Curl?

Peach leaves deformed by peach leaf curl. (Photo: Jack Kelly Clark)

Peach leaf curl is a disease that affects peach and nectarine trees. Although you may not see symptoms right now in the dormant season in California, it's time to think about treatment, especially if your tree had the disease last year. Symptoms of...

Pruning Trees in Winter

Pruning a tree. (Photo: Pixabay)

Winter is an ideal time to prune deciduous fruit and shade trees, since the trees are dormant and you can more easily see the tree canopy. In many cases, pruning can also help prevent or control certain insect and disease problems. For help with...

Page Last Updated: September 21, 2017
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