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

iris 'Discovery' · Iris 'Discovery'
Thrives in a sunny position, in most soils with good drainage. In drier soils, dig in well-rotted organic matter before planting, and mulch in spring. Feed after flowering to encourage bulb growth. See bulb iris cultivation
Low nitrogen feed in spring before and after bloom