| Colocasia- Black Stem
Sunset zones 12, 16-24, H1, H2.
USDA zones: 8-11.
Heat zones: 12-10.
Height: 5-6 feet (1.5-2 m).
Width: 3 feet (90 cm).
The calla lily like flowers have a yellow spathe surrounding a yellow spadix.
Large (2-3 feet), arrow-shaped, glossy, green leaves top deep purple, succulent stalks.
Full sun to partial shade.
Moist to wet, fertile, humus rich soil.
Divide in early spring or late winter.
Prune off dead leaves throughout the growing season to keep the plant looking good.
Pests and Diseases:
Aphids and white flies can be a problem when wintering plants over in the greenhouse.