How to Prune false goat's beard?
Flowering stems may be cut back when flowers fade, or left standing for winter interest

false goat's beard · Astilbe biternata
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
Flowering stems may be cut back when flowers fade, or left standing for winter interest