Gardner's Yampah
Perideridia gairdneri
J Schmidt
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Apiaceae
- Genus:
- Perideridia
- Species:
- Perideridia gairdneri
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 4-6 ft
- Light Requirements:
- Shade
- Drought Tolerance:
- Medium
- Bloom Months:
- apr
- Bloom Colors:
- White
- Food Forest:
- Plant contains edible parts
Native Range
United States: California, Colorado, Idaho, Montana, Nevada, Oregon, South Dakota, Utah, Washington, Wyoming, Canada: Alberta, British Columbia, Saskatchewan
Host Plant for Caterpillars
Reported Fauna Sightings
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- prefers open areas with full sun
Germination Information
Pre-treatment: Seeds require cold, moist stratification for 60-90 days or can be sown in the fall and left outside under cool, fluctuating spring temperatures. Alternatively, a 5 month outdoor cold, moist stratification or a 90 day cold, moist stratification can be used. After stratification, seeds can be rinsed in running water for 48 hours.
Establishment: Seeds are collected in late summer or early fall when they turn dark brown. They can be stripped from the inflorescence or the entire inflorescence can be clipped from the plant. Harvested seeds are stored in paper bags at room temperature until cleaned. Germination rates and times can vary based on stratification methods and temperatures.
Source: npn.rngr.net