What is Popcorn Cassia?
Native to central and eastern Africa, the plant is a perennial at least in zones 10 and 11 (some sources list it as hardy down to zone 9 or even 8), where it can grow up to 25 feet (7.5 m.) tall. It often tops out at 10 feet (30 m.), however, and stays even smaller in cooler climates. Even though it’s extremely frost tender, it grows so quickly that it can be treated as an annual in colder zones, where it will grow to only a few feet (91 cm.) in height but will still bloom vigorously. It can also be grown in containers and brought indoors for the winter.
Popcorn Cassia Care
Popcorn cassia care is not too difficult, though it does take some upkeep. The plant thrives in full sun and rich, moist, well-drained soil. It is a very heavy feeder and drinker, and should be fertilized often and watered frequently. It grows best in the hot and humid days of high summer. It will actually tolerate a very light frost, but container plants should be brought indoors when autumn temperatures start to fall toward freezing. It can sown as seed in very early spring, but when growing popcorn cassia as an annual, it’s best to get a head start by planting cuttings in the spring.
