How to Fertilize astilbe 'Washington'?
Balanced perennial feed every four weeks spring through summer growth

astilbe 'Washington' · Astilbe 'Washington'
Grow in moist but well-drained or boggy soil in dappled shade, or in indirect sun where the soil remains moisture-retentive in summer. Drought intolerant, may be damaged in hot sun. Good for waterside planting. See Astilbe cultivation
Balanced perennial feed every four weeks spring through summer growth