Days to Germination:5-10 days
Ipomoea alba. A spectacular climbing annual, this old-fashioned favorite will scramble up supportive structures for beautiful nighttime floral displays until the first fall frost. Prior to planting, carefully nick the hard seed coat and/or soak the seeds overnight. Then, direct-sow them where they are to grow after all danger of frost is past. Or start the seeds indoors 4 to 6 weeks before planting outside. Carefully thin or transplant Moonflowers to a spacing of 6" to 8" apart without disturbing their roots, and plant in full sun and well-draining soil. Water moderately, as Moonflowers prefer dry conditions. Only fertilize lightly, as soil that is too rich will discourage flower production. Moonflowers require a trellis, fence, string, lamppost or mailbox post to support their long, climbing vines and profuse flowers. Summer flowering. Height: 10' to 12'.