Source: California Invasive Plant Council

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Don't Plant a Pest

Trees of the Central Coast region

Invasive plants are listed in red boxes. Alternatives are listed below in green.
Invasive plants that are also a fire hazard are identified by this symbol: 

Invasive! Do Not Plant! Invasive!

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tree of heaven
Ailanthus altissima
Although not commonly sold in nurseries, this tree is sometimes "shared" among gardeners. Tree-of-heaven produces abundant root sprouts that create dense thickets and displace native vegetation. These root sprouts can be produced as far as 50 feet away from the parent tree. In California, it is most abundant along the coast and Sierra foothills, as well as along streams. A single tree can produce up to a million seeds per year.
Invasive!   Do Not Plant!   Invasive!

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blue gum eucalyptus
Eucalyptus globulus
Found along the coast from Humboldt to San Diego and in the Central Valley. Most invasive in coastal locations. Easily invades native plant communities, causing declines in native plant and animal populations. Fire departments throughout Southern California recommend against using eucalyptus trees for landscaping because they are extremely flammable.
Invasive!   Do Not Plant!   Invasive!

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Russian olive
Elaeagnus angustifolia
Found throughout California. Able to spread long distances with the help of birds and mammals. Invades river and stream corridors, pushing out native willows and cottonwoods. Reduces water levels. Provides poor wildlife habitat. Serious invader in other western states.
Invasive!   Do Not Plant!   Invasive!

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Tamarix spp.
A serious invader throughout California and southwestern states. Uses excessive amounts of water, increases soil salinity, changes water courses. Diminishes wildlife habitat, and increases fire hazard. Not commonly sold but still occasionally available.
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