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Scutellaria lateriflora

A perennial plant in the mint family with toothed, opposite leaves and a square stem. Small, trumpet-shaped flowers, varying in color from pale blue to lavender or even white over most of the summer. It is easily identified by the small size of its flowers, usually found in pairs or single. The flowers attract native bees such as long-tongued bees, bumblebees and sweat bees. Leaves and flowers of this low maintenance perennial can be harvested for medicinal purposes to help treat anxiety, insomnia, and nervous system ailments. Mad dog Skullcap thrives in wet-to-moist conditions and is rhizomatous, but not aggressively so. Habitats include moist sedge meadows, swamps, creek banks, bogs, shorelines, and even wet ditches. Its bitter taste and mild toxic properties deter deer, rabbits, geese and other herbivores from eating the foliage. This is an obligate wetland species, found most often in openings in swamps and bottomlands, along pool margins, in marshes and bogs, and in seepages. A fairly late-blooming Scutellaria, from July sometimes until frost. Arguably has the brightest blue flowers in the genus in the state!

Key Info

Scientific Name: Scutellaria lateriflora L.
Common Names: Mad Dog Skullcap, Blue Skullcap, Tall Blue Skullcap, American Skullcap
Protected Plant Species: No
Light Requirement: ,
Moisture Requirement:
Leaf Retention:
Bloom Times: , ,
Flower Color: Blue

Additional Info

Habit: Spreads by seed and rhizomes, erect, bushy
Height: 1.5-2'
Spread: 1.5-2'
Soil Conditions: Moist to wet, high organic matter. Sandy, loamy, or clay soils
Leaves: Paired leaves up to 3 inches long, coarsely toothed, with a few sparse hairs. Lower leaves broadly lance-like, rounded at the base tapering to a point, while upper leaves become smaller and more lance shaped.
Flowers (or reproductive structures: Each flower is only about ⅖ inch long, but usually bright blue, rarely pink to white. Noticeably many one-sided racemes.
Fruit: Calyx swells into a capsule in autumn, containing a spherical cluster of 4 brown nutlets.
USDA Hardiness Zone: 3 to 9
USDA Wetland Indicator Status in NC: OBL and FACW
Pollination: Long-tongued bees, sweat bees, bumblebees, small butterflies, hummingbird
Wildlife Connections: Nectar attracts bees, Chorentid Moths (Prochoreutis inflatella) eat the leaves
Propagation: Seed, division