Species

15 other cultivars

perennial

Red Sentinel Astilbe

Q: What zones can Red Sentinel Astilbe grow in?

Red Sentinel Astilbe 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.

Q: Is Red Sentinel Astilbe deer resistant?

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

Q: When does Red Sentinel Astilbe bloom?

Red Sentinel Astilbe 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.

Q: Does Red Sentinel Astilbe need full sun?

Red Sentinel Astilbe does best in part shade.

Astilbe astilbe 'Red Sentinel'

$12.75

The Story

Plant Bio

Astilbe 'Red Sentinel' is known for its vibrant red plumes and attractive fern-like foliage. It thrives in moist, well-drained soils and is a popular choice for shaded garden areas.

Features some of the truest, most vibrant scarlet-red plumes of any Astilbe cultivar. The flowers are held on strong, dark red stems above deep green, glossy foliage which has a bronze tint in spring.

Uses & Benefits:

Astilbe Red Sentinel's vibrant red plumes add striking color and texture to shaded gardens, enhancing visual interest throughout the growing season.

Its moist soil preference helps stabilize soil moisture levels and prevent erosion in shaded garden areas.

Provides nectar for pollinators like bees and butterflies, supporting local biodiversity.

SpeciesAstilbe astilbeFalse Spirea

Essentials

At a Glance

Plant Type

Perennial

Height

24 inches

Width

24 inches

Light

Partial Sun, Shade

Zones

4, 5, 6, 7, 8

Water

Consistent moisture

Humidity

Prefers humid environments

Lifespan

Perennial

Native To

Asia and Eastern North America

Toxicity

Non-toxic to humans and pets

Bloom period

Mid-summer – Early summer

In flower about 12 months of the year

Marketplace

Where to Buy

New Garden Plants

<1 Gal Pot

In Stock$12.75

Shipping costs Year-round shipping Free shipping

Planting

How to Grow

Select a shaded spot with rich, moist soil for planting.
Tuck seeds or divisions into the soil, keeping roots moist during planting.
Mist cuttings regularly to maintain humidity and encourage rooting.
Water consistently to keep soil moist but not waterlogged, especially during dry periods.
Fertilize in early spring with a balanced, slow-release fertilizer.
Mulch around plants to retain moisture and suppress weeds.

Pro Tip

Plant Astilbe Red Sentinel in well-draining, humus-rich soil for best color and growth.

Keep It Thriving

Care Guide

Do

Water regularly to keep soil consistently moist 💧
Apply mulch to conserve moisture and regulate soil temperature 🌱
Deadhead spent flowers to encourage reblooming
Divide plants every 3-4 years to maintain vigor

Don't

Avoid dry, exposed locations that cause stress ❌
Don’t let soil dry out completely between watering
Refrain from heavy fertilization late in the season
Don’t forget to remove dead or damaged foliage

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Shaded woodland garden backdropMoisture-loving border plantShade-tolerant perennial bed

Companion Plants

HostaFerns Heuchera LigulariaJapanese Painted Fern

Multiply

Propagation Methods

Good to Know

Common Questions