Botanical Name: Ipomoea purpurea
Hardiness: Perennial in USDA zones 10 and warmer; usually grown as an annual.
Plant Dimensions: 9'–10' vines
Variety Information: 1"–2" wide flowers in assorted colors; may include white, light lavender-blue, rose, pink, and violet.
Exposure: Full sun
Bloom Period: Summer
Attributes: Attracts Pollinators, Deer Resistant
When to Sow Outside: RECOMMENDED. 1 to 2 weeks after your average last frost date. Plants started too early outside will end up less vigorous than plants started when warmer.
When to Start Inside: 4 to 6 weeks before transplanting outside. Sow into a biodegradable pot that can be directly planted in the ground to avoid disturbing roots.
Days to Emerge: 5–15 Days
Seed Depth: ½"
Seed Spacing: A group of 3 seeds every 6"–12"
Thinning: When 2" tall, thin to 1 every 6"–12"
Special Care: Seeds with hard coats, like morning glories, can benefit from scarification, a means of breaking through the hard outer covering to allow moisture to penetrate. There are a few ways to accomplish this: either nick the seeds with sandpaper or an nail clipper, or soak them in water for 12 to 24 hours prior to sowing.