Pacific Poison Oak
Toxicodendron diversilobum
- Native to:
- Canada, Mexico, United States
The original uploader was Conversion script (en.wikipedia.org) at English Wikipedia (en.wikipedia.org) .
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Anacardiaceae
- Genus:
- Toxicodendron
- Species:
- Toxicodendron diversilobum
- USDA Symbol:
- TODI
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Shrub , Vine
- Height:
- 400 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- mar,apr,may,jun
- Bloom Colors:
- white, cream, yellow
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Host Plant for Caterpillars
Caloptilia diversilobiella
Garden & Ecology Notes
- Wildlife Value:
- birds, small mammals, bees
- Deer Resistant:
- Yes
- Fall Color:
- red, orange, yellow
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts vigorously from extensive root system after fire. Often increases in density following disturbance.
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 4.5 - 7.5 (acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- adaptable to various soil types in native range
Propagation & Germination
- Stratification:
- Warm then cold/moist stratification (double dormancy) — 60–90 days
- Scarification:
- Seed coat scarification required before sowing
- Germination Time:
- 30–180 days
- Notes:
- Seeds have hard coat requiring scarification; warm stratification followed by cold stratification improves germination. Germination is often erratic.
The above propagation data sourced from Claude AI