Plant Data Sheet:
Fremontsilktassel occurs in Washington, Oregon, and . It is distributed along the Columbia River in California Washingtonand Oregon, and in the Klamath Mountainsand Coast Ranges from Josephine and Jackson counties, Oregonsouth to . In the Cascade Range and Sierra Nevada, it occurs from from Lane County, Oregon south to Monterey County, California . (2) Madera County, California
silktassel grows in a Mediterranean climate with cool, wet winters and hot, dry summers. Fremont
silktassel occurs from 2,500 to 7,000 feet. (2) Fremont
It is distributed along the Columbia River in
, more abundant and/or less threatened than previously assumed. Washington silktassel usually occurs as scattered individuals throughout Fremont
the chaparral zone. (2)
Habitat topography includes rocky slopes, rolling hills, or steep canyons. (2)
Plant strategy type/successional stage
silktassel is found in all stages of succession. Fremont
The plant is a sprouting survivor in initial and early seral communities. It is shade tolerant and persists until late seral stages in foothill woodland and forest communities.
silktassel seedlings are poor competitors, and their survival rate is low. (2) Fremont
The associated species of
include Colter pine (Pinus coulteri), white fir (Abies concolor), deer
oak (Quercus sadleriana), scrub oak (Q. dumosa), manzanita
(Arctostaphylos spp.), buckbrush (Ceanothus cuneatus), redbud (Cercis
occidentalis), birchleaf mountain-mahogany (Cerocarpus betuloides),
toyon (Heteromeles arbutifolia), poison-oak (Toxicodendron
diversilobium), chamise (Adenostoma fasiculatum), soft chess (Bromus
mollis), foxtail fescue (Festuca magalura), cutleaf filaree (Erodium
cicutarium), and various clovers (Trifolium spp.) (2)
May be collected as:
Collection restrictions or guidelines
Very slow, the seed can take 2 or more years to germinate.
Seed germination (needs dormancy breaking?)
Germination requires over winter stratification. (1)
Seed life (can be stored, short shelf-life, long shelf-life)
Information on seed life was not available.
Recommended seed storage conditions
Information on seed storage was not available.
It is easily cultivated from stem cuttings or seed, and
transplants well. Best sown as soon as it is ripe in a cold frame. (1)
Soil or medium requirements
silktassel grows in well-drained, slightly Fremont
acidic, typic Xerochrept soil with 50 to 60 percent coarse fragment. (2)
The plant strongly resents root disturbance and should be placed in its permanent position as soon as possible. (1)
Recommended planting density
Information on planting density was not available.
Care requirements after installed
Relatively little care is needed after installation. Regular watering is encouraged. (1)
Normal rate of growth or spread; lifespan
At maturity, Fremont Silk-Tassel will reach heights of 5 - 15'. (2)
(1) Permaculture Information Web. Garrya fremontii. http://permaculture.info/cgi-bin/eden?plant=2921.
Data compiled by: Sarah Short 4/12/06