It is important to note that none of the following known hosts are common to Texas. These plants are all indigenous or adapted to the ecology of central California and Oregon. However, the list of susceptible hosts is expanding, and many of these known susceptible host species have relatives in native and planted Texas landscapes.

Known Phytophthera ramorum Hosts

Common Name	Scientific Name	Family
California black oak	Quercus kelloggii	Fagaceae
coast live oak	Quercus agrifolia	Fagaceae
Shreve oak	Quercus parvula var. shrevei	Fagaceae
tanoak	Lithocarpus densiflorus	Fagaceae
rhododendron	Rhododendron macrophyllum	Ericaceae
California bay laurel	Umbellularia californica	Lauraceae
big leaf maple	Acer macrophyllum	Aceraceae
madrone	Arbutus menziesii	Ericaceae
manzanita	Arctostaphylos manzanita	Ericaceae
huckleberry	Vaccinium ovatum	Ericaceae
California honeysuckle	Lonicera hispidula	Caprifoliaceae
toyon	Heteromeles arbutifolia	Rosaceae
California buckeye	Aesculus californica	Hippocastanaceae
California coffeeberry	Rhamnus californica	Rhamnaceae
Redwood	Sequoia sempervirens	Taxodium
Douglas-fir	Pseudotsuga menziesii var. menziesii	Pinaceae

Source: http://www.calflora.org/index0.html