How Often Do Yucca Plants Bloom?

Members of the agave family, yuccas (Yucca spp.) comprise nearly 40 different species of shrubby perennials from North America and the Caribbean basin. Their sword-like leaves are evergreen and architecturally ornamental. Yuccas are slow-growing plants.

Features

All yucca species produce white flowers that are bell-like and pollinated by moths at night. The upright flower stalks to hold many flowers, collectively called an inflorescence. After the flower drop off, seeds may develop; gardeners should cut off the stalk to keep the plant looking attractive.

Time Frame

Yuccas bloom during the warmest part of the growing season when days are long or shortening heading towards the autumnal equinox. Varying according to each species of yucca, flower typically occurs every year anytime from midsummer to mid fall according to the American Horticultural Society's "A-Z Encyclopedia of Garden Plants."

Considerations

Not all species of yucca bloom with similar regularity or visual prominence. As these plants are slow-growing, some take considerable time to mature to an age that produces flowers. Once a plant does bloom, expect blooms to return again the subsequent years at the same time of year.

Yucca Plants Bloom?

Although there are several species in the genus Yucca, the most common yucca in yards is Adam's needle (Yucca filamentosa). Its sword-shaped leaves are evergreen, generally with blue overtones, and distinguished by many long, curly, fibrous threads that gradually peel loose from the leaf margins. Yuccas flower once each year, generally from the middle of summer to early fall, depending on the variety. Once a yucca is mature and blooms, it generally re-blooms at the same time each year. All types of yuccas develop similar inflorescences on tall spikes, but some varieties, such as aloe yucca (Yucca aloifolia) have flowers that completely cover the spikes, making a particularly impressive display. They tolerate soil of any pH and will grow in compacted or poor soil, making yuccas excellent choices for urban environments.