Botanical Name: Asclepias tuberosa
Native: U.S. and Northern Mexico
Hardiness: Perennial in USDA zones 3 and warmer
Plant Dimensions: 24″–36″ tall
Variety Information: Individual flowers ½”, borne in brilliant red-orange clusters.
Exposure: Full sun
Bloom Period: Summer
Attributes: Attracts Pollinators, Drought Tolerant
When to Sow Outside: 2 to 4 weeks before your average last frost date, or fall for spring germination.
When to Start Inside: 6 to 8 weeks before your average last frost date.
Days to Emerge: 14–28 days
Seed Depth: ¼”
Seed Spacing: A group of 3 seeds every 12″–24″
Thinning: When 3″ tall, thin to 1 every 12″–24″