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Blue skullcap

Scutellaria lateriflora

Also called Mad Dog Skullcap, Mad Dog Scullcap, Scullcap, Side Flowering Skullcap, Madweed, Quaker Bonnet

Blue skullcap
Photo: Rolf Engstrand, CC BY-SA 3.0

Blue skullcap is a hardy North American perennial of wet meadows, marshes and stream edges, growing 60 to 80 cm tall with small blue flowers along its side branches. It does best in consistently moist soil in a sunny or lightly shaded spot.

Family
Lamiaceae (Mint family)
Grows as
Perennial
Light
Part shade, Full sun
Water
Keep the soil consistently moist and do not let it dry out.
Soil
Moist, humus-rich loam or garden soil; tolerates wet ground.
Temperature
Hardy in cold winters; suitable for temperate climates, typically down to about -30 °C.
How easy
Easy
Edible
Yes, some parts
Native range
Canada to U.S.A.
Climate
temperate

About

Scutellaria lateriflora, (commonly "blue skullcap", "mad dog skullcap", "American skullcap", "side-flowering skullcap", etc.) is a hardy perennial herb of the mint family, Lamiaceae, native to North America.

It has an upright habit, growing 60–80 cm (24–31 inches) in maximum height. It is a wetland-loving species and grows near marshes, meadows, and other wet habitats. The blue flowers are just under 1 cm (0.4 inches) long. Most of the flowers do not appear at the top of the main stem but are produced along the length of side branches that grow from the leaf axils.

Other Scutellaria plants

Baikal Skullcap · Barbed Skullcap · Costa Rican Skullcap · Marsh skullcap · Dwarf skullcap · Skullcap

Text excerpted from the Wikipedia article Scutellaria lateriflora by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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