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Lamb's ear

Stachys byzantina

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

Lamb's ear (Stachys byzantina) is a groundcover suited to the Colorado Front Range. It matures to about 6 to 12 in tall and 18 to 36 in wide, needs low to medium water, and prefers full sun to partial shade. Iconic silver woolly foliage; kid-magnet ('feel this!'). Non-flowering cultivars stay tidier.

On the CSU listlow to medium water6 to 12 in tall and 18 to 36 in wideXeric / water-wiseDeer-resistant

Photos

At a glance

Will it survive here?

Hardiness zones
USDA 4 to 8
Water needs
low to medium water
Sun
Best in full sun; tolerates partial shade.
Soil
sandy, loam
Soil pH
6.0 to 8.0
Hail tolerance
moderate
Wind tolerance
moderate
Salt tolerance
moderate

How big, what shape?

Mature size
6 to 12 in tall and 18 to 36 in wide
Growth habit
Spreading
Planting spacing
~25 to 36 in apart

What it looks like, and when

Bloom time
early summer, mid summer
Bloom color
pink, purple
Foliage
Evergreen
Winter cover
Strong winter cover

What it will do to your yard

Foot traffic
No foot traffic
Lawn alternative
No-mow lawn alternative

Who else benefits

Pollinator value
moderate
Deer
Generally deer-resistant
Colorado native
No

Also worth knowing

Fire rating
Not rated

Things to know before you plant

  • Spreads aggressivelyLamb's ear, self-layers; the mat expands several inches per year

Using Lamb's ear as a groundcover

Lamb's ear spreads steadily. It fills in densely, crowding out most weeds. It holds strong cover through Front Range winters, so the ground doesn't go bare.

Planting & establishment

Water deeply 1×/week first summer to establish. After establishment, water 1 to 2×/month during dry stretches.

Frequently asked questions

Is Lamb's ear good for the Colorado Front Range?
Yes, Lamb's ear is a well-suited groundcover for Colorado's Front Range.
What should I know before planting Lamb's ear?
The main things to know: Lamb's ear, self-layers; the mat expands several inches per year
How big does Lamb's ear get?
It matures to about 6 to 12 in tall and 18 to 36 in wide.
How far apart do I plant Lamb's ear?
Space Lamb's ear about 25 in apart for a faster, fuller cover, or up to 36 in apart for a looser planting.
Is Lamb's ear hardy on the Front Range?
Lamb's ear is hardy in USDA 4 to 8. The Colorado Front Range spans roughly USDA 4b to 6a, so it is well within range.
How much water does Lamb's ear need?
It needs low to medium water once established.
Is Lamb's ear native to Colorado?
No. It is not a Colorado native, but it grows well on the Front Range.
Is Lamb's ear deer-resistant?
Lamb's ear is generally considered deer-resistant, though no plant is deer-proof when browse pressure is high.
Can you walk on Lamb's ear?
Lamb's ear isn't meant for foot traffic, site it where you won't need to walk across it.
Can Lamb's ear replace a lawn?
Yes, Lamb's ear works as a no-mow lawn alternative on the Front Range. Expect a season or two of weeding and watering while it fills in before it reads as a lawn replacement.
Will Lamb's ear spread or stay put?
Lamb's ear is spreading. Lamb's ear, self-layers; the mat expands several inches per year Give it room to fill in and edit the edges to keep it where you want it.
Does Lamb's ear stay green in winter?
Lamb's ear holds strong cover through Front Range winters, so the ground stays protected rather than going bare.

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See also

Related groundcover

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