Crepe myrtle trees bloom for up to 120 days per year, according to Garden Guides. Blooms on the crepe myrtle come in a variety of colors, including purple, red, lavender, white and pink.
After the crepe myrtle blooms, it produces a black or tan fruit. The fruit pods stay on the trees through winter and then split open to release seeds. Crepe myrtle trees thrive in areas with moist soil and full sunlight. Generally, crepe myrtles do not need excessive fertilizer to grow. Providing crepe myrtles with the appropriate amount of fertilizer helps the tree produce more flowers rather than just foliage.