How to Fertilize iris 'Casque d'Or'?
Rhizome flowering feed monthly spring until end of summer growth cycle

iris 'Casque d'Or' · Iris 'Casque d'Or'
Grow in well-drained, fertile, neutral to slightly acid soil in full sun. Plant rhizomes just above soil level. See bearded iris cultivation
Rhizome flowering feed monthly spring until end of summer growth cycle