shrub

Reeve's Spiraea

Spiraea cantoniensis

The Story

Plant Bio

Spiraea cantoniensis is a deciduous or semi-evergreen shrub native to China, forming a fountain-like mound of arching, flexible stems that reach four to eight feet in height. In spring, the branches are covered in dense, pompom-like clusters of snow-white flowers that emerge alongside lanceolate, blue-green foliage.

This species is distinguished by its exceptionally graceful, weeping habit and its high tolerance for summer heat, humidity, and coastal salt spray. The dark green leaves turn a showy yellow or yellowish-red in the fall before dropping in colder zones.

Uses & Benefits:

Features a graceful, fountain-like arching habit covered in dense, snow-white spring flowers, followed by yellow fall foliage.

Tolerates coastal salt spray, summer heat, humidity, and moderate drought once established.

Attracts bees, butterflies, and other general pollinators, and is occasionally visited by hummingbirds.

Essentials

At a Glance

Plant Type

Shrub

Height

96"

Width

96"

Light

Full Sun, Partial Sun

Zones

5, 6, 7, 8, 9

Water

Medium

Humidity

High

Lifespan

Long-lived

Native To

China

Toxicity

Non-toxic

Bloom period

Spring – Late spring

In flower about 3 months of the year

Planting

How to Grow

Select a planting site in full sun to partial shade with well-drained soil.
Dig a hole twice as wide as the root ball and backfill with soil enriched with organic matter.
Water deeply at the base to settle the soil, and maintain consistent moisture until the root system is established.
Apply a layer of organic mulch around the base to retain moisture and suppress weeds, keeping it clear of the stems.

Pro Tip

Prune immediately after the spring bloom finishes; because flower buds form on the previous season's growth, late-winter pruning removes the entire season's floral display.

Keep It Thriving

Care Guide

Do

Water regularly during the first growing season to establish a deep root system.
Prune immediately after flowering to preserve next year's flower buds.
Rejuvenate older plants by cutting up to one-third of the oldest stems down to ground level every few years.

Don't

Do not prune in late winter or early spring, as this removes the wood that produces spring flowers.
Do not plant in poorly drained or waterlogged soils, which can lead to root rot.
Avoid heavy shearing or cutting back into old, leafless wood.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Pest Check
Prune
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Foundation PlantingHedgeMass PlantingCottage GardenCoastal Garden

Companion Plants

Physocarpus opulifolius Salvia Nepeta

Multiply

Propagation Methods

Good to Know

Common Questions

Reeve's Spiraea questions

What zones can Reeve's Spiraea grow in?

Reeve's Spiraea 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.

When does Reeve's Spiraea bloom?

Reeve's Spiraea typically blooms in spring through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Reeve's Spiraea need full sun?

Reeve's Spiraea does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Reeve's Spiraea drought tolerant?

Yes — once established (usually after the first full season), Reeve's Spiraea handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.