shrub · design plant record

Hydrangea arborescens

Smooth hydrangea

A flowering shrub layer for a moisture-retentive border with room for arching stems.

Photographs show the source plant or captioned cultivar, season and setting. They do not document one of our illustrative garden layouts as a built project.

Height at maturity

0.91–1.52 m (3–5 ft)

Spread at maturity

0.91–1.52 m (3–5 ft)

Light

Sun / Part shade

Moisture

Moist, draining soil

Source-reported USDA zones

3–9 · verify subzone and cultivar

Principal seasonal role

Spring, Summer

Fit it to the site

Moist, draining soil; protect from severe afternoon drying.

Large flower heads on some cultivars can flop; do not assume every selection has the same habit.

Keep the care in the decision

Flowers form on new growth; review cultivar-specific pruning and support needs.

Origin & safety checks

Eastern U.S.. Confirm local native range and restrictions.

The source flags poisonous parts. Do not ingest this ornamental plant. Pet safety and edible uses are not assessed; verify the exact botanical name with a suitable local authority.

Check current invasive restrictions with your local plant-health or extension authority. For pets, use the exact botanical name in a veterinary toxicity reference; for potential ingestion or exposure, get appropriate professional advice rather than relying on a design guide.