Cascading twisted branches display petite pink-tinted lavender-colored blooms for 3 to 4 weeks in early spring. As the mature blooms fade, bright green heart-shaped foliage will begin to grow. Companion plants for the lavender twist redbud tree include Virginia bluebells, daffodils, candytuft, and woodland phlox. The weeping lavender twist reaches heights of 5 to 15 feet at maturity and thrives in zones 5-9.