Colocasia – Royal Hawaiian® Black Coral
Easy Care. Can tolerate soil moisture from average to wet. Bulbs can be dug and stored in cold winter climates to be replanted again the next year.
Great for containers especially as a thriller, but can be an annual for garden beds in Northern climates and a perennial in Southern climates.
Maintenance Category Easy
Water Category Average
Flower Form Container, Landscape
pH B - pH 5.8 - 6.2
EC (2:1 Extraction Method) 0.6 - 0.9
Fertilization 150 - 200
Light Requirements Medium, High
Water Requirements Moderate to Moist
Rooting Out Temperature 65 - 72° Fahrenheit
Growing On Temperature 70 - 75° Fahrenheit
Holding Temperature 50 - 60° Fahrenheit
Planting and Timing Information
Spring through Summer Finish. 1 liner per 4-6" pot.
Finishing Times [weeks]
4-5" and Quart Pot : 7-9
6" and Gallon Pot : 9-11
7-9" Pot : 11-13
10-12" and Two Gallon Pot : 13-15
Pinching and Growth Regulators
Pinching not needed. PGRs are generally not needed. Sumagic is effective if needed.
Pest and Disease Management
General pest and disease practices as listed in notes.
Colocasia can be cutback if needed.