perennial

Alumroot

Heuchera richardsonii

Essentials

At a Glance

Plant Type

Perennial

Height

24 inches

Width

12 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8

Water

Low

Humidity

Adaptable

Lifespan

Short-lived perennial, but self-seeds

Native To

Central North America

Toxicity

Non-toxic

The Story

Plant Bio

Heuchera richardsonii is a clump-forming perennial native to North American prairies and open woodlands. It features a basal mound of long-petioled, rounded, shallowly-lobed, hairy, medium green leaves. Unlike modern hybrids bred for colorful foliage, this native species is valued for its toughness, drought tolerance, and subtle beauty. Its greenish, bell-shaped flowers are held on wiry stems and are an important nectar source for native bees.

Bloom Period:

EarlyLate

Uses & Benefits:

Prairie Alumroot offers a subtle, naturalistic beauty with its mound of fuzzy green leaves and delicate spires of greenish flowers. It provides texture and form in native plant gardens, rockeries, and prairie-style plantings.

Its deep, woody taproot makes it extremely drought-tolerant and useful for stabilizing soils on dry slopes and in challenging, sunny locations where other plants might fail.

This plant is a powerhouse for native pollinators, especially small bees. It is a parent species for many modern Heuchera hybrids, contributing its genetics for toughness, sun tolerance, and hardiness.

Planting

How to Grow

Select a sunny site with excellent drainage.
Amend heavy clay soils with grit or sand.
Dig a hole as deep and twice as wide as the pot.
Set the plant so the crown is slightly above soil level.
Backfill with soil and water gently.
Water sparingly once established; it is very drought tolerant.

Pro Tip

Thrives in lean, well-drained soils; avoid rich soil and excessive moisture to prevent crown rot.

Keep It Thriving

Care Guide

Do

Provide excellent drainage.
Plant the crown high to prevent rot.
Allow soil to dry out between waterings.
Embrace its natural, wild look in the garden.

Don't

Do not overwater or plant in wet locations.
Avoid rich, overly fertile soils.
Don't bury the crown with mulch or soil.
Don't expect flashy foliage like modern hybrids.

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Tough plant for rock gardensEssential component of prairie restorationsSubtle texture for naturalistic borders

Companion Plants

Schizachyrium scoparium Echinacea pallida Coreopsis lanceolata Sporobolus heterolepis Geum triflorum

Multiply

Propagation Methods

Good to Know

Common Questions

Alumroot questions

What zones can Alumroot grow in?

Alumroot 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 Alumroot deer resistant?

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

When does Alumroot bloom?

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

Does Alumroot need full sun?

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

Is Alumroot drought tolerant?

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