Twoneedle Pinyon
Pinus edulis
Taxonomy
- Division:
- Coniferophyta | - Conifers
- Family:
- Pinaceae
- Genus:
- Pinus
- Species:
- Pinus edulis
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Tree
- Height:
- More than 40 ft
- Light Requirements:
- Part Shade
- Drought Tolerance:
- High
- Bloom Months:
- apr, may
- Bloom Colors:
- Yellow
Native Range
United States: Arizona, California, Colorado, New Mexico, Nevada, Oklahoma, Texas, Utah, Wyoming
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
Soil Requirements
- Soil Type:
- rocky, well-drained, nutrient-poor soil
- pH:
- 6.0 - 8.0 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- thrives in arid, high-altitude regions
Germination Information
Pre-treatment: Seeds are imbibed in water for 2 days and then artificially stratified in a refrigerator for 90 days. Alternatively, seeds can be removed from storage and placed in water at room temperature for 12 - 18 hours, then stratified for 14 - 28 days at temperatures ranging from 2 to 4°C. Some protocols suggest no pre-treatment is necessary.
Establishment: Seeds are typically collected during the fall months. There are regional variations in the protocols, and some suggest no pre-treatment is necessary. The protocols also vary in terms of sowing date, with some suggesting late spring and others suggesting fall.
Source: npn.rngr.net