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Donkey's Ears

Stachys byzantina (STAH-kees biz-an-TEE-nah)

Family: Lamiaceae Non-native Herbaceous (1-3 ft)

Lamb's ear is a popular silver-leaved, semi-evergreen, herbaceous perennial ground cover in the mint family (Lamiaceae). It is native to the rocky hills of Turkey, the Caucasus and Iran. The genus name, Stachys , is Greek and comes from a word meaning "ear of corn." The species epithet is Latin and means "of Byzantine." Lamb's ear grows well in average, dry to medium, very well-drained soils in full sun to partial shade. Avoid overwatering as wet leaves invite disease, as do high-humidity summers. The plant likes some afternoon shade, particularly in the hot summer. It spreads by stems rooting at the nodes and can be aggressive in good conditions. Division of the plant may be required about every 2 to 4 years. The plant is deer-resistant and moderately drought-tolerant once established. The plant grows into a dense clump of thick, soft, velvety, silver-green leaves that form a low-spreading groundcover. They are evergreen in warmer climates. In summer, tiny, purplish-pink flowers appear that are best removed to enhance the foliage and to help maintain its compact habit. The soft, fuzzy leaves make an excellent addition to a children's or sensory garden. It also works in cottage gardens, English formal gardens, winter gardens and rock gardens. Plant it along a border front or walkway, or it may also be grown in containers. In hot, humid areas, consider planting Lamb's ear on a hill or slope to prevent root rot. Quick ID Hints: groundcover with silvery-green leaves the leaves are thick, soft, velvety, oblong-elliptical, woolly, and may be unpleasantly aromatic the basal leaves are in rosettes leaf size varies depending on the cultivar the flowers are purplish-pink, erect, spikes or racemes that bloom in the summer Insects, Disease, and Other Plant Problems : Susceptible to leaf rot with high humidity or excessive rain. VIDEO created by Andy Pulte for “Landscape Plant Identification, Taxonomy and Morphology” a plant identification course offered by the Department of Plant Sciences, University of Tennessee.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 67 attributes.

How it fits the guild

Guild layer 4 - Herbaceous (1-3 ft) Optimal soil pH Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Often confused with Verbascum thapsus
Fills a similar niche Petunia x hybrida Salvia rosmarinus Salvia yangii

Full plant profile

Growing Conditions
Plant type
Ground Cover; Herbaceous Perennial
Life cycle
Perennial
USDA zones
4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
Light
Full sun (6 or more hours of direct sunlight a day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil texture
Clay; Loam (Silt); Sand; Shallow Rocky
Soil pH
Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
Soil drainage
Good Drainage | Occasionally Dry
Available space
12 inches-3 feet
NC region
Coastal; Mountains; Piedmont
Mature size
Height: 1 ft. 0 in. - 1 ft. 6 in. | Width: 1 ft. 0 in. - 1 ft. 6 in.
Growth rate
Medium
Maintenance
Low
Canopy layer
4 - Herbaceous (1-3 ft)
Form & Appearance
Habit / form
Clumping; Horizontal; Spreading
Texture
Fine
Foliage
Broadleaf Evergreen; Deciduous
Leaf color
Gray/Silver; Green
Leaf type
Simple
Leaf arrangement
Opposite
Leaf shape
Elliptical; Lanceolate; Oblong
Leaf margin
Crenate; Sinuate
Leaf feel
Soft; Velvety
Leaf value
Fragrant; Showy
Leaf size
3-6 inches long, 3-6 inches wide
Hairs present
Yes
Leaf detail
The leaves are silvery-green, densely white woolly, and measure 4 to 6 inches long and 2 to 2.5 inches wide. They are opposite and oblong elliptical. There are 3.5-inch-long stems on the lower leaves but are nearly stemless above. The leaves are acute, tapering to the base, and have crenate margins slightly sinuous. The basal leaves are in rosettes.
Flower color
Pink; Purple/Lavender
Flower value
Fragrant
Flower form
Spike
Flower shape
Lipped
Flower size
< 1 inch
Flower detail
The inflorescence is a terminal dense spike and an arrangement of verticillasters. Flowers are sessile, subtended by reduced leaves (foliaceous bracts). Corolla is purple with some mottling internally, bilabiate. Corolla tube is less than 0.5 inches long and pubescent externally. The upper lip is single, shallowly 3-lobed, entire at apex, 0.2 inches long, and less than half an inch broad. Lower lip 3-lobed. Two lateral lobes are shallow, much smaller than the central lobe. They bloom from May to July.
Bloom time
Summer
Fruit color
Brown/Copper
Fruit type
Nut
Fruit detail
If the flowers are pollinated, an oblong, hairless brown nutlet may be produced.
Stem color
Gray/Silver
Stem detail
The stems are erect, branching, four-angled, and up to 20 inches tall. The entire plant is covered with very dense gray lanate pubescence.
Wildlife & Ecology
Native status
Non-native
Origin
Krym, Northern Turkey to Northern Iran
Wildlife value
Attracts butterflies
Attracts
Butterflies
Play value
Attracts Pollinators; Fragrance; Textural
Food & Medicine
Harvest time
Fall
Fruit type
Nut
Landscape Use
Landscape location
Container; Naturalized Area; Recreational Play Area; Walkways
Landscape theme
Butterfly Garden; Children's Garden; Cottage Garden; English Garden; Garden for the Blind; Rock Garden
Design feature
Accent; Border; Mass Planting
Garden tags
#drought tolerant #purple #evergreen #deer resistant #groundcover #fantz #pollinator plant #fragrant leaves #butterfly friendly #summer flowers #pink flowers #stormwater demo garden orange co #full sun tolerant #partial shade tolerant #silver leaves #velvety #sensory garden #hairy leaves #playground plant #landscape plant sleuths course #rabbit resistant #deciduous #buncombe county sun and shade garden #container plant #th-touch #herbaceous perennial #HS303 #poor soil tolerant #th-sowing #wildlife friendly
Problems & Resistance
Disease problems
Southern Bacterial Wilt on Herbaceous Ornamental Plants
Problems
Weedy
Resistant to
Black Walnut; Deer; Drought; Dry Soil; Pollution; Poor Soil; Rabbits
Particularly resistant to
deer and drought resistant
Propagation
Division; Seed

Planted at Hunnicutt

Nobody’s planted this one yet.