Species

Hydrangea serrataMountain Hydrangea

7 other cultivars

shrub

Tuff Stuff Red Mountain Hydrangea

Hydrangea serrata 'Tuff Stuff Red'

The Story

Plant Bio

Hydrangea serrata, the mountain hydrangea, is a deciduous shrub native to Japan and Korea. It is smaller and more delicate in appearance than H. macrophylla, with lacecap-style flowers.

'Tuff Stuff Red' is a remarkably hardy reblooming variety that flowers on both old and new wood. Its unique semi-double to double florets emerge a deep pink-red and are held on strong, sturdy stems.

Uses & Benefits:

Offers a long season of color with its beautiful, intricate red lacecap flowers that bloom from summer through fall. Its compact size and tidy habit make it a versatile and elegant addition to any garden.

Its ability to bloom on new wood makes it a reliable bloomer even after harsh winters that might kill flower buds on other hydrangeas. It is an excellent choice for cut flowers, both fresh and dried.

The fertile inner flowers of the lacecap bloom provide an accessible source of nectar and pollen for bees and other beneficial insects, unlike the sterile florets of many mophead types.

SpeciesHydrangea serrataMountain Hydrangea

Essentials

At a Glance

Plant Type

Shrub

Height

30 inches

Width

30 inches

Light

Partial Sun

Zones

5, 6, 7, 8, 9

Water

Moderate

Humidity

Moderate to high

Lifespan

Long-lived shrub

Native To

Garden origin

Toxicity

Toxic to dogs, cats, and horses if ingested

Bloom period

Early summer – Early fall

In flower about 4 months of the year

Planting

How to Grow

Select a site with morning sun and afternoon shade.
Dig a hole twice as wide as the container.
Amend the soil with compost to improve drainage and fertility.
Gently remove the plant from its pot and loosen the roots.
Set the plant in the hole with the crown at soil level.
Water thoroughly and apply a layer of shredded bark mulch.

Pro Tip

For the best red color, grow in neutral to alkaline soil; adding garden lime can help raise the pH if your soil is acidic.

Keep It Thriving

Care Guide

Do

Provide consistent moisture, especially in hot weather.
Mulch to keep the roots cool and moist.
Protect from harsh afternoon sun to prevent wilting and leaf scorch.
Test soil pH and amend if you want to influence flower color.

Don't

Don't prune heavily or cut back in fall; you will remove flower buds.
Avoid planting in dry, windy locations.
Don't let the plant dry out completely between waterings.
Don't fertilize late in the season, as this can encourage tender new growth.

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Colorful accent in mixed perennial bordersCompact shrub for foundation plantingsElegant choice for decorative containers

Companion Plants

Hosta 'Halcyon'Astilbe 'Fanal'Brunnera macrophylla 'Jack Frost'Tiarella cordifolia (Foamflower)Heuchera 'Dolce Wildberry'

Multiply

Propagation Methods

Good to Know

Common Questions

Tuff Stuff Red Mountain Hydrangea questions

What zones can Tuff Stuff Red Mountain Hydrangea grow in?

Tuff Stuff Red Mountain Hydrangea is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Tuff Stuff Red Mountain Hydrangea deer resistant?

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

When does Tuff Stuff Red Mountain Hydrangea bloom?

Tuff Stuff Red Mountain Hydrangea typically blooms in early summer through early fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Tuff Stuff Red Mountain Hydrangea need full sun?

Tuff Stuff Red Mountain Hydrangea does best in part shade.