Popcorn Cassia is a unique plant endemic to central and eastern Africa that produces a bright green foliage that smells like popcorn when it is rubbed!  It also offers dense flower spikes covered with bright yellow flowers. This ornamental plant looks good in gardens and landscaping and can be grown as a houseplant as well.  Popcorn Cassia (Senna didymobotrya) grows best in full sun locations with moist, well-drained soils