Showy skullcap is a native perennial wildflower in the Lamiaceae (mint) family that can be found growing in dry, rich open woods, thickets or clearings, typically on west-facing slopes in the piedmont or mountain regions of North Carolina. The common name skullcap comes from the shape of the caylx at the base of the flower resembling a skull. Plant in full sun to filtered shade with well-draining moist to dry soil. This skullcap is more tolerant of shade than other members of this genus. It is adaptable to a wide range of soil pH. The rounded clumps reach a height and width of 1 to 2 feet. t has blue spikes of showy flowers that bloom later in the spring and into the summerproviding a pop of color after most other wildflowers have faded. The opposite leaves on square stems, as typical of the mint family, have some purple around the margins as they age turning an attractive purple color in the fall. Though it is a member of the mint family it does not the pungent odor common to mint when the leaves are crushed. Growing in clumps and patches, it does not spread by stolons or rhizomes. Mass plant it or let it naturalize in a woodland garden, or plant it along a border front. Insects, Diseases and Other Plant Problems: No significant diseases or insect damage. Development, logging, and clearing in mountain forests are a detriment to this plant.
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.
Dappled Sunlight (Shade through upper canopy all day) | 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
High Organic Matter
Soil pH
Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
Soil drainage
Good Drainage | Moist | Occasionally Dry
Available space
Less than 12 inches; 12 inches-3 feet
NC region
Mountains; Piedmont
Mature size
Height: 1 ft. 0 in. - 2 ft. 6 in. | Width: 1 ft. 0 in. - 2 ft. 6 in.
Maintenance
Low
Canopy layer
4 - Herbaceous (1-3 ft)
Form & Appearance
Habit / form
Clumping; Rounded
Leaf color
Green; Purple/Lavender
Leaf type
Simple
Leaf arrangement
Opposite
Leaf shape
Elliptical; Ovate
Leaf margin
Serrate
Leaf size
3-6 inches long, 1-3 inches wide
Hairs present
No
Leaf detail
Opposite oval to ellipitcal, 1/2" long petoile, 2"-4" long 2"-3" wide leaves, coarsely toothed and pointed. Almost hairless. Leaf margins are purple, leaves turning full purple in the fall.
Fall color
Purple/Lavender
Flower color
Blue; Purple/Lavender
Flower value
Showy
Flower form
Raceme
Flower shape
Lipped; Tubular
Flower size
1-3 inches
Flower detail
1" violet-blue flowers on terminal raceme. Flowers bloom May through July. Erect tube, a hood-like upper lip, and a 2-lobed, spreading lower lip. The flowers are larger than other members of the genus.
Bloom time
Spring; Summer
Fruit color
Brown/Copper; Cream/Tan
Fruit type
Nut
Fruit detail
Fruit is a nutlet that appears soon after flowering June to July.
Stem color
Green
Stem detail
Smooth stem with 8 or fewer leaves.
Wildlife & Ecology
Native status
Native
Origin
Eastern U.S.A. to Illinois
Distribution
A, DC, FL, KY, MD, MS, NC, JH, NY, OH, PA, SC, TN, VA, WV
Wildlife value
Attracts bees and other pollinators.
Attracts
Bees; Moths; Songbirds
Play value
Buffer; Screening
Food & Medicine
Harvest time
Summer
Fruit type
Nut
Landscape Use
Landscape location
Container; Naturalized Area; Patio; Pool/Hardscape; Slope/Bank; Small Space; Walkways; Woodland
Landscape theme
Drought Tolerant Garden; Native Garden
Design feature
Accent; Barrier; Border; Hedge; Mass Planting; Small groups; Specimen
Garden tags
#NC native #native wildflower #showy flowers #food source hard mast fruit #food source nectar #food source pollen #bumblebee friendly #heat tolerant #drought tolerant #Audubon #shade garden #fall color purple #pollinator plant #flowers late spring #flowers early summer #border front #flowers mid-summer #low maintenance #bee friendly #mass planting #rain garden #larval host plant #NC Native Pollinator Plant #woodland #wildflower