Why are my moonflower plants not blooming? Moonflowers are sensitive to day length and may bloom later in the summer. They prefer a poor soil and if they are over fertilized, they may grow into larger plants with many leaves but few flowers.

How do I get my moonflower to bloom?

Water small plants regularly and provide additional water as moonflower vines grow. Regular fertilization at half strength with a high phosphorus fertilizer encourages more blooms on this plant. Too much nitrogen fertilizer may limit blooms and create abundant growth of the foliage.

How long does it take for moonflowers to bloom?

Moonflowers may take five or six months to bloom after planting, which is why you should plant the seeds in late February or early March. Gather ripe seed pods after they turn brown, beginning in October.