How to Fertilize king protea?
Balanced perennial feed every four weeks from spring through summer

king protea · Protea cynaroides
Also known as: Cape artichoke flower
Grow under glass in full light. Water sparingly in winter. Grow outdoors in a frost-free, sheltered border in poor neutral to acid, well drained soil. Die back and general failure to thrive usually indicates that the rooting medium is too rich
Balanced perennial feed every four weeks from spring through summer