Iris 'White Excelsior' · Fertilizing

Grow in any moderately fertile, neutral to alkaline, well drained soil in full sun. Plant bulbs at twice their height in late summer or early autumn and feed with a high potash fertiliser after flowering. See bulb iris cultivation for more information

Watering: Deep irrigation after top soil dries out, drain excess water from rhizomesSunlight: Full sunHarmful if eaten. Wear gloves and other protective equipment when handling

Low-nitrogen slow-release feed twice yearly spring and mid-autumn

How to Fertilize Iris 'White Excelsior'?