How to Fertilize iris 'Dutch Chocolate'?
Diluted iris feed every three to four weeks during spring bloom

iris 'Dutch Chocolate' · Iris 'Dutch Chocolate'
Grow in well-drained, fertile, neutral to slightly acidic soil in full sun. Do not cover the rhizomes with mulch or allow other plants to shade them as sun on the rhizomes encourages flowering. For further information see bearded iris cultivation
Diluted iris feed every three to four weeks during spring bloom