· Are you disappointed that your lovely yucca flowers were a no-show? Read on for answers to your non-blooming succulents in this guide. · Not enough light can sometimes discourage blooms on yucca plants. Regular fertilization and trimming will also help keep the plant healthy and encourage both growth and yucca flowers. Adding phosphorus-rich fertilizer or bone meal to the soil can often help encourage a yucca plant flower to form. · Yucca plants may not bloom if they are too young or not receiving enough sunlight. Optimizing conditions for yucca blooming involves ensuring the plant is getting enough sunlight and not being overwatered. Fertilizing with a high-phosphorus fertilizer can promote yucca blooming. · Most yucca plants prefer warmth, which explains why they bloom during late spring and early summer. Your yucca might not bloom if you keep it in cold temperatures for extended periods. · Some Yuccas May NeverBloom. First of all, there are some 60 species of Yucca, some of them very reluctant bloomers. Most treelike or shrublike yuccas, like this Joshua tree (Yucca brevifolia), are unlikely to bloom in gardens outside of arid climates. · Depending on the species, it can take several years for a Yucca to have its first bloom. When the plant is not damaged by too much moisture, it should bloom eventually. · Red Yucca plants will not flower until they are established for at least three years. If the plants are younger, you should still pay attention to soil quality, lighting, and moisture levels.