52 named cultivars

shrub

Bigleaf Hydrangea

Hydrangea macrophylla

Same species

52 named cultivars

Essentials

At a Glance

Plant Type

Shrub

Height

48 inches

Width

48 inches

Light

Partial Sun, Shade

Zones

6, 7, 8, 9

Water

Moderate

Humidity

Moderate to high

Lifespan

Long-lived perennial

Native To

Japan and China

Toxicity

Toxic to pets and humans if ingested

The Story

Plant Bio

Hydrangea x macrophylla, commonly known as Bigleaf Hydrangea, is known for its large, showy flower clusters that can vary in color based on soil pH. The color of the flowers can shift from pink to blue based on soil acidity, making them unique among hydrangeas.

Uses & Benefits:

Hydrangeas add lush, colorful blooms and textured foliage to gardens, creating visual interest and elegance.

Provides privacy as a dense hedge and shades outdoor seating areas.

Supports pollinators like bees and butterflies with abundant nectar.

Planting

How to Grow

Select a location with morning sun and afternoon shade for optimal blooms.
Prepare soil with organic matter to improve drainage and acidity.
Tuck roots into a hole twice as wide as root ball and backfill gently.
Mist cuttings regularly to maintain humidity and promote rooting.
Water consistently, especially during dry spells, to keep soil moist but not waterlogged.
Mulch around base to conserve moisture and regulate soil temperature.

Pro Tip

Plant hydrangeas in slightly acidic soil for vibrant blue blooms and ensure consistent watering.

Keep It Thriving

Care Guide

Do

Water deeply during dry periods 💧
Prune after flowering to shape and promote new growth ✂️
Fertilize with a balanced, acid-loving plant fertilizer in spring and summer 🌱

Don't

Avoid overwatering to prevent root rot ❌
Don’t prune in late summer or fall, as it may remove next season’s buds ❌
Refrain from planting in full sun in hot climates, which can scorch leaves ❌

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Fertilize
Mulch
Prune
Spring Cleanup
Winter Prep

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Vivid border with lush green foliageSoft, flowering hedge for privacyShade garden accent with textured blooms

Companion Plants

Ferns Hostas Astilbes Heucheras Japanese Maple

Multiply

Propagation Methods

Good to Know

Common Questions

Bigleaf Hydrangea questions

What zones can Bigleaf Hydrangea grow in?

Bigleaf Hydrangea is hardy in USDA Zones 6–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Bigleaf Hydrangea deer resistant?

Not reliably. Deer may browse Bigleaf Hydrangea, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Bigleaf Hydrangea bloom?

Bigleaf Hydrangea typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Bigleaf Hydrangea need full sun?

Bigleaf Hydrangea does best in part shade.