Growing Hydrangea Tree Form (Standard): Planting, Pruning & Overwintering

Planting Bareroot Tree Form

Soak roots in a bucket of water for an hour. In ground: Dig wide, deep hole. Plant crown at label depth, arrange roots, firm soil, water thoroughly. In container: Use 10–12 inch pot with quality potting soil. Water regularly—containers dry faster.

Staking

Protect from strong winds. Use a stake at least as thick as the stem, long enough to reach into the head. Fasten with figure-eight ties at several points. Check and loosen ties as stem expands.

Pruning, Fertilizing & Repotting

• Shape: Selectively pinch new shoots in early spring; do not shear.
• Fertilizer: Use balanced time-release fertilizer for potted plants.
• Repotting: If plant dries quickly, move to a pot 2 inches wider/taller. Make four vertical cuts in root ball, fill with fresh mix, water well.

Overwintering Containers

• Zones 4–6: Store in sheltered, unheated area (garage/shed) at 25–40°F. Check moisture occasionally.
• Freeze-thaw climates: Protected porch.
• No freeze: Leave outdoors year-round.