shrubN. America Native

Rose Spirea

The Story

Plant Bio

Spiraea douglasii, commonly known as rose spirea, is a deciduous upright shrub native to western North America that reaches four to six feet in height and spreads via underground rhizomes. The plant features oblong green leaves with distinct felt-like white undersides and produces dense, conical plumes of deep rose-pink flowers from early to late summer.

This species is distinguished by its aggressive, suckering habit that quickly forms dense thickets, making it highly effective for stabilizing wet soils. The terminal flower panicles feature prominent protruding stamens, giving the pink plumes a fuzzy appearance that attracts hummingbirds and native bees.

Uses & Benefits:

Produces dense, upright rose-pink flower plumes and features leaves with contrasting felt-like white undersides.

Excellent for stabilizing wet soils, controlling erosion on banks, and planting in rain gardens or boggy areas.

Provides nectar for hummingbirds, native bees, butterflies, and other beneficial insects throughout summer.

Essentials

At a Glance

Plant Type

Shrub

Height

72"

Width

72"

Light

Full Sun, Partial Sun

Zones

5, 6, 7, 8

Water

High

Humidity

Moderate to High

Lifespan

Perennial

Native To

Western North America

Toxicity

Non-toxic

Bloom period

Early summer – Late summer

In flower about 3 months of the year

Planting

How to Grow

Select a planting site in full sun to partial shade with moist, acidic to neutral soil.
Dig a hole twice the width of the root ball and set the plant at the same depth as its nursery container.
Water thoroughly after planting and maintain consistent moisture, as the plant does not tolerate drying out.
Apply an annual layer of organic compost around the root zone in spring to provide sufficient nutrients.

Pro Tip

Restrict the creeping underground suckers annually to prevent the shrub from overrunning neighboring plants, and avoid pruning hard into old leafless wood where new buds cannot break.

Keep It Thriving

Care Guide

Do

Keep the soil consistently moist or wet, especially during hot summer periods.
Prune immediately after flowering in late summer to encourage dense branching.
Manage spreading underground rhizomes regularly to keep the plant within its designated space.

Don't

Do not allow the soil to dry out completely, as this causes premature leaf drop and decline.
Do not prune hard into old, leafless wood where new buds cannot break.
Do not apply heavy, high-phosphorus fertilizers; a simple annual compost layer is sufficient.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mulch
Pest Check
Propagate
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Rain GardensRiparian RestorationWet DitchesHedgesNaturalized Areas

Companion Plants

Physocarpus capitatus Cornus sericea

Multiply

Propagation Methods

Good to Know

Common Questions

Rose Spirea questions

What zones can Rose Spirea grow in?

Rose Spirea is hardy in USDA Zones 5–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Rose Spirea deer resistant?

Yes — Rose Spirea is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Rose Spirea bloom?

Rose Spirea typically blooms in early summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Rose Spirea need full sun?

Rose Spirea does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.