Scarify by chipping or filing seed and then soak in warm water for about an hour. Surface sow.
Seed To Bloom:
Start in pots 8 weeks before the last spring frost. Keep at about 70-80°F. Sterile germinating mix to prevent fungal problems.
Direct sow after last spring frost in warmer areas (zones 7+).
WHEN TO SET OUTSIDE
2 weeks after last springtime frost.
PLACEMENT & CULTIVATION
Texas star satisfies the hunger for a lavish, tropical look in northern gardens and is reliably perennial south of zone 6. A feast for the eyes, the 6" across flowers are showy and free-blooming in moist soils in full sun. Lovely with white swamp milkweed and cardinal flowers in rain gardens or alongside a stream or pond. It can be grown in a large tub in a warm, sheltered site in cooler summer regions. Overwinter dormant indoors in a cool basement.
Prefers neutral but will tolerate slightly acidic to slightly alkaline
Mix in about 2" of compost prior to planting, and mix in about an inch each spring if growing as a perennial.
Diseases & Pests:
If aphids are a problem, hose down the plants daily until the insects are no longer present.