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Lanceleaf Bluet

Houstonia purpurea var. calycosa

In the Carolinas and Georgia, found in calcareous prairies and barrens, dry woodlands, banks, rock outcrops, shallow soils around mafic and calcareous rock outcrops. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you

35
Good

Native to Louisiana. How scores work Is it native here?

Profile 94%

Height
Up to about 20 inches
Light
Partial shade, Full sun
Soil moisture
Dry to moist
Will it fit your yard?

Rare or protected plant. Specialist conservation planting; excluded from routine garden suggestions. Plant caution source

Hidden from default planting suggestions. Wildlife value and native status remain unchanged.

At a glance

Life cycle
Perennial
Bloom
May to July
Fruiting season
July to August

Not yet recorded · Spread · Leaves

Recorded in 3 Louisiana parishes.

Natural habitats

Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.

All habitats

Also found with this plant

Wildlife whose habitat models include habitats this plant grows in, in Louisiana. Shared habitat, not food. 67 animals.

All wildlife of Louisiana

Ecological relationships

Who uses this plant?

What these records mean

1CaterpillarsGenus host records with ranges including LA

Genus host records with ranges including LA · Houstonia

  • Thyris maculataSpotted Thyris
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
13BeesSoutheastern regional records
1Specialist beesPollen specialists
—BirdsRecorded genus food-resource interactions; not a state feeding claim

No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects

Growing and identification

Plant details

Family
Rubiaceae
Flower color
White, pink or purple
Fruit begins
July
Fruit ends
August
Growing sources and scope
Also known as

Calycose Bluet; Houstonia purpurea var. calycosa; Lance Leaf Bluet

Conservation status

Louisiana rankS2
Global rankG5T5 [G5]
LA statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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Sources