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Coral bells / alumroot

Heuchera sanguinea

Compiled by · Reviewed against CSU Extension & Plant Select® · Updated 2026-10-14

Coral bells / alumroot (Heuchera sanguinea) is a groundcover suited to the Colorado Front Range. It matures to about 8 to 18 in tall and 12 to 18 in wide, needs medium water, and prefers partial shade to dappled sun. Foliage cultivars in every color from caramel to near-black. Slender flower spikes attract hummingbirds.

On the CSU listmedium water8 to 18 in tall and 12 to 18 in wide

Photos

At a glance

Will it survive here?

Hardiness zones
USDA 4 to 9
Water needs
medium water
Sun
Best in partial shade; tolerates dappled sun. Flowers best with more sun.
Soil
loam
Soil pH
6.0 to 7.5
Hail tolerance
moderate
Wind tolerance
low
Salt tolerance
low
Site uses
Cool north foundations

How big, what shape?

Mature size
8 to 18 in tall and 12 to 18 in wide
Growth habit
Clumping
Planting spacing
~13 to 18 in apart

What it looks like, and when

Bloom time
late spring, early summer
Bloom color
pink, red, white
Foliage
Evergreen
Winter cover
Partial winter cover

What it will do to your yard

Foot traffic
No foot traffic

Who else benefits

Pollinator value
high
Deer
Deer often browse this
Colorado native
No

Also worth knowing

Fire rating
Not rated

Using Coral bells / alumroot as a groundcover

Coral bells / alumroot grows in tidy clumps. It fills in to a moderately dense cover.

Frequently asked questions

Is Coral bells / alumroot good for the Colorado Front Range?
Yes, Coral bells / alumroot is a well-suited groundcover for Colorado's Front Range.
How big does Coral bells / alumroot get?
It matures to about 8 to 18 in tall and 12 to 18 in wide.
How far apart do I plant Coral bells / alumroot?
Space Coral bells / alumroot about 13 in apart for a faster, fuller cover, or up to 18 in apart for a looser planting.
Is Coral bells / alumroot hardy on the Front Range?
Coral bells / alumroot is hardy in USDA 4 to 9. The Colorado Front Range spans roughly USDA 4b to 6a, so it is well within range.
How much water does Coral bells / alumroot need?
It needs medium water once established.
Is Coral bells / alumroot native to Colorado?
No. It is not a Colorado native, but it grows well on the Front Range.
Is Coral bells / alumroot deer-resistant?
No. Deer often browse Coral bells / alumroot, so plan on protecting it where deer roam.
Can you walk on Coral bells / alumroot?
Coral bells / alumroot isn't meant for foot traffic, site it where you won't need to walk across it.
Will Coral bells / alumroot spread or stay put?
Coral bells / alumroot is clumping. Give it room to fill in and edit the edges to keep it where you want it.
Does Coral bells / alumroot stay green in winter?
Coral bells / alumroot keeps partial cover through Front Range winters.

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