Amaryllidaceae
Allium tolmiei var. persimile
Allium tolmiei var. persimile var. persimile
Also known as Allium persimile
Flowering Plants · Native Plants · Allium · Wild Onion · Idaho Native · Native Bulb · Perennial · Rock Garden · Pollinator · Rare Variety · Tolmie Onion
This rare variety of Tolmie's onion is endemic to Idaho and thrives in rocky, well-drained soils with partial shade to full sun. Water consistently during spring while the plant is actively growing, then ease off as leaves yellow and the plant enters summer dormancy. It is best suited to native plant collections, rock gardens, or wildflower meadows in cooler climates.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water moderately until soil is evenly moist; allow top inch to dry between waterings · Every 7-10 days during active growth; reduce after foliage dies back
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 6–8
- Temperature
- -40°F to 95°F
- Cycle
- Perennial
Hardiness
USDA 3a-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 4 ft
- Spread
- 3 ft
- Spacing
- 6 in apart
- Growth rate
- Fast
- Root depth
- Medium
- Flowers
- Red
- Foliage
- Green · Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Idaho
- Attracts
- Bees, Butterflies
Sources: trefle, usda
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