How to Fertilize iris 'Benton Arundel'?
Low nitrogen feed in spring before and after bloom

iris 'Benton Arundel' · Iris 'Benton Arundel'
Grow in well-drained, fertile, neutral to slightly alkaline loam in full sun, with upper part of rhizomes exposed at soil level and not overshadowed, rotate every 5-6 years. See bearded iris cultivation
Low nitrogen feed in spring before and after bloom