How to Fertilize Iris 'White Knight'?
Diluted iris feed every three to four weeks during spring bloom

Iris 'White Knight' · Iris 'White Knight'
Thrives in a sunny position, in neutral to slightly acid soil with good drainage. Plant rhizomes just above soil level, as sun on the rhizomes encourages flowering. See bearded iris cultivation
Diluted iris feed every three to four weeks during spring bloom