Welcome!

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.

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

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.

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.

UPCOMING EVENTS

What's new in Landscape and Urban Hort?

Insect and Mite Pests on Roses

Rose aphids infesting rose buds. (Credit: Jack Kelly Clark)

Roses are popular ornamental plants grown in home gardens, parks, and other landscapes. Just like other plants, roses can be host to a number of insects and mite pests. Roses can grow well with little to no pesticide use and numerous natural enemies, or...

DPR license renewal and early bird pricing for online courses

If you are a license or certificate holder from the California Department of Pesticide Regulation (DPR) and your last name begins with the letters M through Z, this is your year to renew your license. Why not get jump on finishing up your continuing...

What to Wear When Using Pesticides

Figure 1. Safety glasses showing evidence of compliance with the designated “Z87” marked. (Credit: CA Reynolds)

When using any kind of pesticide, including herbicides, it's important to read the pesticide label carefully and to be sure that you have the proper equipment for applying the pesticide correctly and safely. You will need certain clothing to protect...

Addressing the Science Surrounding Glyphosate

Applying glyphosate from a hand-held sprayer to control weeds. (Credit: CA Reynolds)

UC ANR's charge is research and extension and we provide guidance about how to manage weeds using registered pesticides and by non-chemical methods. UC ANR includes information in its publications on how to effectively and safely use glyphosate where it...

UC IPM Hosts Workshop for Retailers

Integrated Pest Management Workshop for Retail Nurseries and Garden Centers Register now for this hands-on, train-the-trainer workshop designed especially for retail nursery and garden center employees, managers, owners, and affiliates. The...