perennialN. America Native

White Mountain Saxifrage

The Story

Plant Bio

Saxifraga paniculata is a low-growing, evergreen alpine perennial that forms dense, neat basal rosettes of leathery, spoon-shaped leaves. In summer, it produces small, cup-shaped white flowers on slender, reddish glandular-hairy stems rising above the foliage.

The leaf margins feature distinct teeth with conspicuous, encrusted white pores that secrete lime, giving the foliage a silver-dotted border. This species is highly adapted to severe cold and thrives in alkaline, mineral-rich rock crevices.

Uses & Benefits:

Forms neat, evergreen, silver-edged rosettes that provide year-round architectural interest in rock crevices and alpine troughs.

Highly drought-tolerant once established in rock crevices, requiring virtually no supplemental watering or fertilizer.

The small summer flowers provide nectar for native bees, flies, and other generalist insect pollinators.

Essentials

At a Glance

Plant Type

Perennial

Height

12"

Width

12"

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7

Water

Low

Humidity

Low

Lifespan

Perennial

Native To

Europe, Asia, North America

Toxicity

Non-toxic

Bloom period

Summer

In flower about 3 months of the year

Planting

How to Grow

Select a planting site in full sun to partial shade, ensuring protection from intense afternoon sun in warmer climates.
Prepare a gritty, mineral-rich planting medium with exceptional drainage, avoiding rich organic loam.
Position the plant in a rock crevice, wall, or alpine trough, keeping the crown slightly elevated.
Top-dress the surrounding soil with grit or stone chips to keep the basal foliage away from standing moisture.

Pro Tip

Plant this species in lean, stony crevices or alpine troughs with sharp mineral drainage, and top-dress with stone chips to keep the basal rosettes dry and prevent crown rot.

Keep It Thriving

Care Guide

Do

Plant in lean, gritty, exceptionally well-drained mineral soil.
Top-dress around the crown with stone chips or gravel.
Remove spent flower stems cleanly at the base after blooming.

Don't

Do not plant in rich, organic garden loam.
Do not prune into old, leafless wood as rosettes will not regenerate.
Do not overwater or allow standing water around the crown.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Pest Check
Propagate
Spring Cleanup
Winter Prep

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Rock gardensAlpine troughsCrevice gardensStone walls

Companion Plants

Sempervivum Campanula Dianthus Sedum

Multiply

Propagation Methods

Good to Know

Common Questions

White Mountain Saxifrage questions

What zones can White Mountain Saxifrage grow in?

White Mountain Saxifrage 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 White Mountain Saxifrage deer resistant?

Not reliably. Deer may browse White Mountain Saxifrage, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does White Mountain Saxifrage bloom?

White Mountain Saxifrage 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 White Mountain Saxifrage need full sun?

White Mountain Saxifrage does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is White Mountain Saxifrage drought tolerant?

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