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Azure bluet

Houstonia caerulea

Also called Bluet, Quaker Ladies, Bluets, Azure Bluets, Common Bluet

Azure bluet
Photo: Linda M Morgan, CC BY-SA 3.0

Azure bluet is a small native perennial herb with pale blue, four-parted flowers and a yellow center, growing about 20 cm tall. It does best in moist, acidic soil in partial shade, often among grasses.

Family
Rubiaceae (Coffee family)
Grows as
Perennial
Light
Part shade, Shade
Water
Keep soil consistently moist, especially during the growing season.
Soil
Moist, acidic, humus-rich soil.
Temperature
Hardy in cold climates; suited to temperate conditions with cold winters.
How easy
Easy
Native range
E. Canada to E. U.S.A.
Climate
temperate

About

Houstonia caerulea, commonly known as azure bluet, Quaker ladies, or bluets, is a perennial species in the family Rubiaceae. It is native to eastern Canada (Ontario to Newfoundland) and the eastern United States (Maine to Wisconsin, south to Florida and Louisiana, with scattered populations in Oklahoma). It is found in a variety of habitats such as cliffs, alpine zones, forests, meadows and shores of rivers or lakes.

Other Houstonia plants

Bluet

Text excerpted from the Wikipedia article Houstonia caerulea 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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