alum root (Heuchera richardsonii) plant — close-up photo
Easy to grow

alum root

Heuchera richardsonii

Overview

Alum root (Heuchera richardsonii) is an evergreen perennial native to the western United States. It features a rosette of lobed basal foliage in shades of green, maroon, purple, or bronze. The tiny, bell-shaped, creamy-white flowers are borne on long, slender stems above the foliage mound. The flowers typically bloom in mid- to late spring. Alum root prefers a bright location and acidic soil. Pruning is typically not necessary with this hardy plant, but it will benefit from deadheading if desired. It is drought and deer tolerant and makes a great choice for a xeriscape garden!

Care Guide

💧

Watering

Minimum — every "7-10" days.

☀️

Light

Full sun, part shade.

🪴

Soil

Sandy Loamy Rocky

🌡️

Temperature

Hardiness zone 3-9.

✂️

Pruning

Best pruned in May, June, July, May.

🔬

Propagation

Division, Cutting, Seed Propagation, Layering Propagation

Other plants you might like if you grow alum root.

Browse all →