shrub

Smooth hydrangea 'Annabelle'

Hydrangea arborescens 'Annabelle'

Preview: plant data is awaiting horticulturist review. A professional horticulturist hasn't reviewed our plant table yet. Lists still follow fixed rules for zone, sun, pets, deer and invasive status.

Hardy in zones 3–9, Smooth hydrangea 'Annabelle' is a fast-growing deciduous shrub. It grows 3–5 ft tall and 3–5 ft wide, so plant it 3.5 ft apart. Give it part sun to shade and average water. It flowers white in June to August. In a FloraVista list it usually plays the structure role: a shrub that holds the bed's shape at the back all year. It is native to the Northeast, the Mid-Atlantic, the Southeast and the Midwest. Deer do eat it, and it is toxic to dogs and cats. Our rules leave it out of lists in the Desert Southwest, where summer heat, humidity or mild winters hold it back even inside its zone range.

Facts from our plant table

Botanical name: Hydrangea arborescens 'Annabelle'
Plant type: Shrub, deciduous
Hardiness zones: 3 to 9
Sun: Part sun (4–6 hours); Part shade (2–4 hours); Shade (under 2 hours)
Water: Medium
Soil: Likes moist, well-drained soil; wilts in dry spells.
Mature size: 3–5 ft tall × 3–5 ft wide
Spacing: 3.5 ft apart (centre to centre)
Growth rate: Fast
Bloom: Jun–Aug · white
Roles in a bed: Structure
Styles: cottage, natural, classic
Deer resistance: Low: deer eat it
Pets: Toxic to dogs and cats. Hydrangea is on the ASPCA toxic list (cyanogenic glycosides).
Native to: Northeast, Mid-Atlantic, Southeast and Midwest
Pot size and price: 3-gallon pot, typically $30–$50 (easy to find)
Plant in: Spring or Fall
First-year watering: Water deeply once or twice a week through the first summer, more in heat waves, so the root ball never dries out.
Pruning: Blooms on new wood: cut stems back to 12-18 in in late winter.

Sources: Missouri Botanical Garden Plant Finder; ASPCA toxic and non-toxic plant list; Rutgers NJAES deer resistance ratings (A-D); state noxious weed lists / Invasive Plant Atlas of the US; typical 2026 US garden-centre and big-box listings. Not yet reviewed by a horticulturist.

Guides that include this plant

Good companions

The plants our list engine most often puts in the same bed as Smooth hydrangea 'Annabelle', across the sun, zone, pet, deer and style combinations it fits.

If you can't find it

Substitutes our engine offers for Smooth hydrangea 'Annabelle': same role in the bed, passing the same rules.

How this page was made

This page was generated from this plant's record in FloraVista's plant table by fixed rules. The companions and substitutes come from the lists our rules engine composes. No named expert has reviewed this page.

Data status: the plant table is awaiting review by a horticulturist. Check each plant with a local nursery or extension office before you buy.

Sources

Missouri Botanical Garden Plant Finder, state extension services and the USDA PLANTS database (zones, size, sun, water, bloom, native range)
ASPCA toxic and non-toxic plant lists (dog and cat toxicity)
Rutgers NJAES and regional extension deer-resistance ratings
State noxious-weed and invasive-plant lists and the Invasive Plant Atlas of the US
Typical US garden-centre listings (pot size and price band)

Generated November 12, 2026. How FloraVista chooses plants