Knobcone Pine
Pinus attenuata
Taxonomy
- Division:
- Coniferophyta | - Conifers
- Family:
- Pinaceae
- Genus:
- Pinus
- Species:
- Pinus attenuata
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Tree
- Height:
- More than 40 ft
- Light Requirements:
- Part Shade
- Drought Tolerance:
- High
- Bloom Colors:
- Not Applicable
Native Range
United States: California, Oregon
Keystone Species Ranking
- Caterpillar Keystone:
- ★☆☆☆☆ Based on number of butterfly and moth species using this genus as host plant (Source: National Wildlife Federation)
Host Plant for Caterpillars
Dioryctria auranticella, Eucosma rescissoriana, Mimosa webworm (Exoteleia burkei), Nantucket pine tip moth (Rhyacionia frustrana)
Soil Requirements
- Soil Type:
- sandy, acidic, nutrient-poor soil
- pH:
- 4.5 - 6.5 (acidic to slightly acidic)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- Commonly found in chaparral and dry slopes
Germination Information
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 90 days.
Notes: Seeds may require light for optimal germination.
Source: OpenAI GPT-4o