1/4-1/2" Soak several hours in warm water prior to sowing
Seed To Bloom:
Sow in 4" pots about 8 weeks before last frost. Keep at 65-80°F. Cover with humidity dome to retain moisture until germination occurs.
Direct sow in zones 8-10 after all danger of frost has passed.
WHEN TO SET OUTSIDE
After last frost, when soil has warmed.
PLACEMENT & CULTIVATION
Moonflower's lush heart-shaped leaves and climbing ways add vertical interest to borders by gracefully twining up trellises and arbors. Northern gardeners in short-season areas should start moonflower seeds indoors, enabling them to gain a head start on the growing season. Once the nights become warm, transplant them into containers. Soil and water on the lean side and constricting root run in containers will promote flowering, as will an application of flower fertilizer in mid and late summer. Avoid nitrogen fertilizers that promote leaf growth over flowering. The blooming period for moonflowers typically begins in late summer and extends into early fall, lasting until the arrival of frost. The tightly furled buds of moonflowers unfurl rapidly, revealing their full beauty and sending forth a potent fragrance that diminishes as they become pollinated. Warm and humid summer evenings enhance this enchanting scent. Caution: seeds contain some toxic alkaloids.
1" per week, more during especially hot, dry spells. Allow the soil to dry between waterings.
Slightly acidic to slightly alkaline.
Mix in 2" of compost prior to planting and apply a flower fertilizer at bud set for more abundant blooming.