perennial

Thurston's Cranesbill

Geranium x oxonianum 'Thurstonianum'

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Perennial

Height

15 inches

Width

24 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Moderate

Humidity

Average humidity

Lifespan

Perennial

Native To

Garden origin

Toxicity

Non-toxic to humans and pets

The Story

Plant Bio

A vigorous, clump-forming perennial with deeply lobed, mid-green leaves. From late spring to late summer, it produces distinctive, star-shaped, magenta-pink flowers with narrow, separated petals. Notable for its unusual, star-like flowers with narrow, almost thread-like petals, which distinguishes it from other cranesbills. It has a very long flowering season.

Bloom Period:

EarlyLate

Uses & Benefits:

Provides vibrant pink blooms and lush foliage, enhancing garden borders and flower beds.

Tolerant of foot traffic and low maintenance, ideal for groundcover and erosion control.

Supports pollinators with nectar-rich flowers, contributing to local biodiversity.

Marketplace

Where to Buy

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Planting

How to Grow

Tuck seeds or divisions into well-drained soil in early spring.
Water regularly to keep soil moist but not soggy.
Place in partial shade for optimal growth.
Fertilize lightly every 4-6 weeks during active season.
Mulch around base to retain moisture and suppress weeds.
Prune after flowering to encourage bushiness.

Pro Tip

Ensure good drainage to prevent root rot and promote healthy growth.

Keep It Thriving

Care Guide

Do

Water consistently during dry spells 💧
Deadhead spent blooms for continuous flowering
Divide every 2-3 years to maintain vigor
Place in partial shade if full sun causes leaf scorch

Don't

Avoid overwatering which can cause root rot ❌
Don’t fertilize excessively, as it may reduce flowering
Refrain from heavy pruning in late fall
Don’t plant in poorly drained soil

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Pink-flowered groundcoverBorder edging with soft foliage

Companion Plants

Hostas Lavender Salvia Coreopsis Nepeta

Multiply

Propagation Methods

Good to Know

Common Questions

Thurston's Cranesbill questions

What zones can Thurston's Cranesbill grow in?

Thurston's Cranesbill 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 Thurston's Cranesbill deer resistant?

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

When does Thurston's Cranesbill bloom?

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

Does Thurston's Cranesbill need full sun?

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

Is Thurston's Cranesbill drought tolerant?

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