How to Prune astilbe 'Red Sentinel'?
No pruning required, but the dead stems may be cut to ground level in late winter

astilbe 'Red Sentinel' · Astilbe 'Red Sentinel'
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
No pruning required, but the dead stems may be cut to ground level in late winter