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?

Dark Rover Ant: Current Status in California

Figure 1. Dark rover ant (Credit: Siavash Taravati, UC IPM)

[From the Fall 2018 issue of UC IPM's Green Bulletin newsletter] The dark rover ant (Brachymyrmex patagonicus) is an invasive species which is increasingly being noticed in Southern California. It is a nuisance species that invades structures as both...

Updated Landscape Weed Info

Mallow (cheeseweed). [Credit: Jack Kelly Clark]

Controlling weeds can be challenging to landscape professionals or home gardeners since landscapes often include a mix of turfgrass, annual plants, herbaceous perennials, shrubs, and trees. The newly revised publication Pest Notes: Weed Management in...

Sticky mess on plants

Feeding by aphids created this sticky honeydew on crape myrtle leaves. (Credit: Belinda Messenger-Sikes)

Are you seeing cars, sidewalks, driveways, or other plants covered in sticky stuff, especially those under trees? This sticky substance, called honeydew, is produced by certain insects that excrete it when they feed on plants. Plant leaves look shiny and...

What is a pesticide?

Pesticides on shelf. (Credit: Anne Schellman)

When you hear the term “pesticide,” what comes to mind? Do you understand what pesticides are and, more importantly, how to use them correctly? A pesticide is any material (natural or synthetic) used to control, prevent, kill, suppress, or...

Mosquitoes in Garden Centers

Culex mosquito larvae. (Credit: Jack Kelly Clark)

This article was written for the UC IPM Retail Nursery and Garden Center News, a publication directed at retail nursery store employees. With the recent confirmed human West Nile virus deaths in California, it's important to understand how...

Page Last Updated: September 21, 2017
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