perennial

Masterwort

Astrantia major

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Perennial

Height

24 inches

Width

18 inches

Light

Partial Sun, Shade

Zones

4, 5, 6, 7

Water

Consistent moisture

Humidity

Prefers moderate to high humidity

Lifespan

Perennial

Native To

Europe and Asia

Toxicity

Non-toxic

The Story

Plant Bio

Astrantia major is a perennial herb known for its attractive flower structures and ability to thrive in semi-shaded areas. Notable for its intricate flower shapes and long bloom time, it's also appreciated for its ability to attract beneficial insects.

Bloom Period:

EarlyLate

Uses & Benefits:

Provides charming, airy umbels of flowers that add elegance to shaded gardens.

Prefers shaded areas, reducing the need for full sun cultivation.

Attracts beneficial insects and supports pollinator activity.

Marketplace

Where to Buy

We couldn't find this plant listed online right now.

Shipping costs Year-round shipping Free shipping

Planting

How to Grow

Select a site with partial shade to full sun for optimal growth.
Prepare well-draining, humus-rich soil with neutral to slightly alkaline pH.
Tuck seedlings or divisions into the soil, spacing them 12-18 inches apart, and water thoroughly.
Mist cuttings regularly to maintain humidity and promote rooting, which takes about 6 weeks.
Mulch around the plant to retain moisture and suppress weeds.
Fertilize with a balanced, organic fertilizer in early spring to support healthy growth.

Pro Tip

Divide mature plants every 3-4 years in early spring for vigorous growth.

Keep It Thriving

Care Guide

Do

Water consistently to keep soil moist but not waterlogged 🌱
Prune after flowering to maintain shape and encourage new growth
Apply organic mulch annually to conserve moisture

Don't

Avoid overwatering to prevent root rot ❌
Don’t expose to full, harsh sunlight which can scorch leaves
Refrain from heavy fertilizing late in the season

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Shaded woodland borderMoist perennial bedRustic cottage garden

Companion Plants

Hostas Ferns Astilbes Ligularia Japanese Anemones

Multiply

Propagation Methods

Good to Know

Common Questions

Masterwort questions

What zones can Masterwort grow in?

Masterwort is hardy in USDA Zones 4–7. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Masterwort deer resistant?

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

When does Masterwort bloom?

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

Does Masterwort need full sun?

Masterwort does best in part shade.