Species

Astilbe astilbeFalse Spirea

15 other cultivars

perennial

Astilbe Astounding

Astilbe astilbe 'Astounding'

The Story

Plant Bio

Astounding is known for its stunning feathery plumes that create a striking display in shaded gardens.

This cultivar is particularly noted for its robust height and resilience in moist environments.

Uses & Benefits:

Astilbe's feathery plumes add soft texture and vibrant color to shaded gardens, creating a lush, romantic atmosphere.

Provides ground cover in shady, moist areas, reducing weed growth and soil erosion.

Attracts pollinators like bees and butterflies, supporting local biodiversity.

SpeciesAstilbe astilbeFalse Spirea

Essentials

At a Glance

Plant Type

Perennial

Height

24"

Width

24"

Light

Partial Sun, Shade

Zones

4, 5, 6, 7, 8

Water

Consistently moist soil

Humidity

Prefers high humidity environments

Lifespan

Perennial

Native To

Asia and North America

Toxicity

Non-toxic to humans and pets

Bloom period

Mid-summer – Early summer

In flower about 12 months of the year

Planting

How to Grow

Tuck seeds or divisions into moist soil in early spring.
Water consistently to keep soil evenly moist during growing season.
Mist cuttings regularly to maintain humidity and root development.
Fertilize with a balanced, slow-release fertilizer in spring.
Mulch around plants to retain moisture and suppress weeds.
Divide clumps every 3–4 years in early spring or fall.

Pro Tip

Plant Astilbe in shaded or partially shaded areas with rich, moist soil for best growth.

Keep It Thriving

Care Guide

Do

Water regularly to keep soil moist 🌱
Apply mulch to conserve moisture
Deadhead spent flowers to promote rebloom
Fertilize in spring with organic compost

Don't

Avoid letting soil dry out completely ❌
Don’t expose to harsh, direct sunlight
Refrain from over-fertilizing, which can cause weak growth
Do not plant in poorly-draining soil

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Shaded woodland gardenMoist border with lush foliageBackground plant for shade garden

Companion Plants

HostaFerns Astilbe 'Visions'Bleeding Heart Ligularia

Multiply

Propagation Methods

Good to Know

Common Questions

Astilbe Astounding questions

What zones can Astilbe Astounding grow in?

Astilbe Astounding is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Astilbe Astounding deer resistant?

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

When does Astilbe Astounding bloom?

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

Does Astilbe Astounding need full sun?

Astilbe Astounding does best in part shade.