Plantae > Tracheophyta > Magnoliopsida > Ericales > Ericaceae > Rhododendron > Rhododendron occidentale

Rhododendron occidentale (western azalea)

Synonyms: Azalea occidentalis (homotypic); Rhododendron occidentale var. occidentale

Wikipedia Abstract

Rhododendron occidentale, the western azalea or California azalea, is one of two deciduous Rhododendron species native to western North America (the other is Rhododendron albiflorum). The western azalea is known to occur as far north as Lincoln and Douglas Counties in Oregon and as far south as the mountains of San Diego county. Typically found in the coastal ranges of western North America, it also grows in the Cascade and Sierra Nevada mountain ranges, but is not known east of them.
View Wikipedia Record: Rhododendron occidentale

Infraspecies

Rhododendron occidentale var. californicum
Rhododendron occidentale var. paludosum
Rhododendron occidentale var. sonomense (Sonoma azalea)

Attributes

Bloom Period [1]  Late Spring
Drought Tolerance [1]  None
Fire Tolerance [1]  Medium
Frost Free Days [1]  9 months
Fruit/Seed Abundance [1]  High
Fruit/Seed Begin [1]  Summer
Fruit/Seed End [1]  Fall
Growth Form [1]  Multiple Stem
Growth Period [1]  Spring, Summer
Growth Rate [1]  Moderate
Hazards [1]  Moderate Toxicity
Leaf Type [2]  Deciduous
Lifespan [1]  Perennial
Propagation [1]  Bare Root, Container, Cutting, Seed
Root Depth [1]  12 inches (30 cm)
Seed Spread Rate [1]  Rapid
Seed Vigor [1]  Medium
Seeds Per [1]  3999992 / lb (8818480 / kg)
Shape/Orientation [1]  Erect
Structure [2]  Shrub
Vegetative Spread Rate [1]  None
Flower Color [1]  White
Foliage Color [1]  Green
Fruit Color [1]  Black
Fall Conspicuous [1]  Yes
Flower Conspicuous [1]  Yes
Fruit Conspicuous [1]  Yes
Height [1]  9.84 feet (3 m)
Hardiness Zone Minimum [1]  USDA Zone: 8 Low Temperature: 10 F° (-12.2 C°) → 20 F° (-6.7 C°)
Light Preference [1]  Mixed Sun/Shade
Soil Acidity [1]  Mostly Acid
Soil Fertility [1]  Intermediate
Water Use [1]  High
Screening - Summer [1]  Dense
Screening - Winter [1]  Porous

Predators

Caloptilia ferruginella[3]
Coleotechnites huntella[3]
Lyonetia ledi[3]
Polygonia faunus (green comma)[3]
Polygonia zephyrus[3]

External References

USDA Plant Profile

NatureServe Explorer

Citations

Attributes / relations provided by
♦ 1USDA Plants Database, U. S. Department of Agriculture
♦ 2Kattge, J. et al. (2011b) TRY - a global database of plant traits Global Change Biology 17:2905-2935
♦ 3HOSTS - a Database of the World's Lepidopteran Hostplants Gaden S. Robinson, Phillip R. Ackery, Ian J. Kitching, George W. Beccaloni AND Luis M. Hernández
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0