How to Get a Hibiscus to Bloom

Hibiscus flowers are large and brightly colored.

Hibiscus shrubs are known for their large brightly colored flowers. If your hibiscus shrub has plenty of healthy foliage, but isn't blooming, something is wrong. Fortunately, with good weather and basic care, you can quickly correct the problems.

Things You'll Need

• Fertilizer
• Pruning shears

Instructions

1. Plant hibiscus in a warm part of the landscape. The shrubs tolerate cool temperatures, but they will not flower without heat. Temperatures above 60 degrees Fahrenheit are required, including night temperatures. Flowers should return once the weather warms up again. If this is a chronic problem, consider planting hibiscus in pots and bringing them indoors during cold weather.

2. Water hibiscus as needed to keep the soil moist, but do not allow standing water or wet soils. Good drainage is important because wet soil is a common cause of flower drop in hibiscus.

3. Prune hibiscus in late winter to shape the plant and encourage branching. Don't wait too late to prune, Hibiscus shrubs bloom on new growth. If you wait until new growth appears to prune, you are trimming away your flowers. Avoid pruning during the growing season.

4. Fertilize regularly for healthy blooms. Hibiscus shrubs need a light application of fertilizer three or four times a year. Begin fertilizing in early spring, applying fertilizer every two months until early winter. Purchase a fertilizer specifically designed for flowering shrubs and follow the label directions for amounts and application instructions.

5. Keep your hibiscus shrubs pest free. Insects such as caterpillars, nematodes and thrips often cause flower drop.

References

• University of Illinois Extension; Unveiling the Many Faces of Hibiscus; Sandra Mason; September 2007
• University of Florida IFAS Extension; Hibiscus in Florida; D. L. Ingram, et al.
• University of Minnesota Extension Service: Hibiscus