Clethra barbinervis

Acidic, humus-rich, consistently moist but well-drained soil. Peat-based mixes preferred.

Water regularly to keep soil moist during growing season. Reduce watering significantly during winter dormancy.

Prefers morning sun and afternoon shade. Tolerates full sun in cooler climates.

Apply slow-release acid plant fertilizer in early spring before new growth emerges.

Prune after flowering to maintain shape and remove dead wood. Avoid heavy pruning as blooms form on old wood.