Species

1 other cultivar

‘Astary Rose’Hybrid Astilbe

perennial

False Spirea

Astilbe arendsii 'Astary Red'

The Story

Plant Bio

Astilbe arendsii is a clump-forming herbaceous perennial native to East Asian woodlands, prized for its deeply divided, fern-like foliage and feathery summer flower plumes. The species thrives in consistently moist, humus-rich soils in partial to full shade, where it forms neat, mounding ground cover.

'Astary Red' is a compact, dwarf cultivar that produces dense, erect panicles of deep rose-red flowers held just above the foliage. Unlike traditional vegetative cultivars, this selection is bred for rapid first-year flowering from seed without requiring a cold vernalization period.

Uses & Benefits:

Provides dense, feathery plumes of deep red flowers and fine-textured, fern-like foliage that brightens shaded garden areas.

Offers a compact, non-invasive growth habit that fits easily into small containers, borders, and mixed perennial beds.

Attracts generalist pollinators and small butterflies to shade gardens where flowering resources are often limited.

Essentials

At a Glance

Plant Type

Perennial

Height

14"

Width

12"

Light

Partial Sun, Shade

Zones

4, 5, 6, 7, 8, 9

Water

High

Humidity

Moderate

Lifespan

Perennial

Native To

Asia (ancestral species)

Toxicity

Non-toxic

Bloom period

Summer

In flower about 3 months of the year

Planting

How to Grow

Select a planting site in partial to full shade with rich, moisture-retentive soil.
Incorporate generous amounts of compost or well-rotted manure to improve soil water retention.
Plant the crown just below the soil surface and water thoroughly to settle the roots.
Apply a two-inch layer of organic mulch around the base to conserve soil moisture.

Pro Tip

Keep the soil continuously moist using a thick layer of organic mulch; allowing the root zone to dry out even briefly causes immediate leaf scorch and foliage decline.

Keep It Thriving

Care Guide

Do

Keep the soil consistently moist throughout the growing season.
Apply a balanced slow-release fertilizer or compost layer in early spring.
Divide established clumps every three to four years to maintain plant vigor.

Don't

Do not allow the soil to dry out completely at any point.
Do not shear the foliage back during summer unless it is physically damaged.
Do not plant in poorly drained, waterlogged soils where stagnant water collects.

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Shade GardensWoodland BordersMass PlantingsContainer GardeningCut Flower Gardens

Companion Plants

Hosta Heuchera Dicentra spectabilis

Multiply

Propagation Methods

Good to Know

Common Questions

False Spirea questions

What zones can False Spirea grow in?

False Spirea is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is False Spirea deer resistant?

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

When does False Spirea bloom?

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

Does False Spirea need full sun?

False Spirea does best in part shade.