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A California native oak valley

Protecting California from invasive species costs more than $80 million a year.

How You Can HelpMost of the plants used in gardens and landscaping do not invade or harm wildland areas. But a few vigorous species can - and do - escape from cultivation into open landscapes and cause a variety of ecological problems. They crowd out native plants, insects and animals, and can lead to increased flooding, fire and crop losses.

A few simple steps can prevent invasions before they start. We can be an environmentally responsible community - one that supports horticultural businesses and beautiful gardens!

Start here to find invasive plant information and good plant choices for your region.

If you already know which California region you are in, you can go directly to your regional list:

  • Sierra & Coastal Mountains  (Sunset Zones 1-3)
  • Central Valley  (Sunset Zones 7-9)
  • Desert  (Sunset Zones 10-13)
  • North & Central Coast  (Sunset Zones 14-17)
  • South Coast  (Sunset Zones 18-24)

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© Copyright 2007 California Horticultural Invasives Prevention (Cal-HIP)
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PlantRight Project Manager
c/o Sustainable Conservation
98 Battery Street Suite 302, San Francisco CA 94111
ph: 415.977.0380 ext. 312