How to Fertilize Griffith's cobra lily?
Highly diluted balanced feed every four weeks spring to fall

Griffith's cobra lily · Arisaema griffithii
Plant the tubers 20cm deep in winter or spring, into moist but well-drained, humus-rich soil in a cool, partially shaded site. Requires winter protection. Can also be grown in deep pots in a cold greenhouse
Highly diluted balanced feed every four weeks spring to fall