Botanical Name: Penstemon strictus
Native: Colorado, Wyoming, New Mexico, Arizona, Utah
Hardiness: Perennial in USDA zones 4–9
Plant Dimensions: 24"–36" tall
Variety Information: Brilliant, 1" blue-violet, tubular flowers
Exposure: Full sun to part shade
Bloom Period: Early summer
Attributes: Attracts Hummingbirds, Attracts Pollinators, Cut Flower, Deer Resistant, Drought Tolerant, Heat Tolerant
When to Sow Outside: 6 to 8 weeks before your average last frost date or late fall.
When to Start Inside: 6 to 8 weeks before your average last frost date. Germinates best in cooler soils (near 55°F).
Days to Emerge: 14–35 days
Seed Depth: ⅛"
Seed Spacing: A group of 3 seeds every 18"
Thinning: When 2" tall, thin to one every 18"
Rocky Mountain Blue Penstemon Seeds Reviews