Lyreleaf Sage, Cancer Weed
Salvia lyrata 'Purple Knockout'

Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Salvia (SAL-vee-uh) (Info)
Species: lyrata (ly-RAY-tuh) (Info)
Cultivar: Purple Knockout
» View all varieties of Salvias

Category:

Perennials

Height:

12-18 in. (30-45 cm)

Spacing:

12-15 in. (30-38 cm)

Hardiness:

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Full Sun

Sun to Partial Shade

Danger:

Unknown - Tell us

Bloom Color:

Blue-Violet

Violet/Lavender

Purple

Bloom Time:

Mid Spring

Late Spring/Early Summer

Mid Summer

Late Summer/Early Fall

Mid Fall

Late Fall/Early Winter

Foliage:

Grown for foliage

Evergreen

Burgundy

Dark/Black

Bronze-Green

Smooth-Textured

Mottled

Good Fall Color

Other details:

This plant is attractive to bees, butterflies and/or birds

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

Unknown - Tell us

Patent Information:

Non-patented

Propagation Methods:

From seed; winter sow in vented containers, coldframe or unheated greenhouse

Seed Collecting:

Collect seedhead/pod when flowers fade; allow to dry

Allow pods to dry on plant; break open to collect seeds

Allow seedheads to dry on plants; remove and collect seeds

Regional

This plant has been said to grow in the following regions:

Tuskegee, Alabama

Clayton, California

Fairfield, California

Penn Valley, California

Denver, Colorado

Gainesville, Florida

Douglas, Georgia

Leesburg, Georgia

Itasca, Illinois

Dracut, Massachusetts

Jamesburg, New Jersey

Burlington, North Carolina

Elizabeth City, North Carolina

Flat Rock, North Carolina

Monroe, Ohio

Aloha, Oregon

Mill City, Oregon

Lansdowne, Pennsylvania

Norristown, Pennsylvania

Murfreesboro, Tennessee

Belton, Texas

Cleveland, Texas

Houston, Texas

Mont Belvieu, Texas

Rowlett, Texas

Kalama, Washington

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Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
Positive

On Nov 16, 2014, OhioLarch from Monroe, OH (Zone 6a) wrote:

It gets around, but it's easy (here) to keep under control. Others may have a harder time with it.

I'd much sooner have this than ajuga.

Neutral

On Mar 22, 2007, berrygirl from Braselton, GA (Zone 7b) wrote:

Short/Med - Plant 12" apart. Zone 5-8. Great foliage plant. Deep chocolate purple leaves stay close to the ground. Blue purple flowers ring their stiff stems and dry in place to a silver white. Pleasing effect for the foreground.
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(MY NOTE: FOLIAGE LOOKS SIMILAR TO A BURGUNDY AJUGA!)