// SPECIES PROFILE · PERENNIAL · NATIVE

Azure bluet

Houstonia caerulea

Azure bluet (Houstonia caerulea) is a perennial in the — family. Native range includes AR, MO. Hardy in zones 3a–10a. Mature size 1"–8". Blooms Apr–Jul.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 29 U.S. states, including AL, AR, CT, DC, DE, GA…
USDA hardiness: Zones 3a–10a
Mature size: 1"–8"
Sun: Part shade
Water: —
Bloom: Apr–Jul
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Azure bluet (Houstonia caerulea) — *Houstonia caerulea* — Azure bluet. Photo by Linda M Morgan via Wikimedia Commons (CC BY-SA 3.0).

Field Notes

[ growing · ecology · siting · care ]

Azure bluet (Houstonia caerulea) is a perennial in the — family. Native range includes AR, MO. Hardy in zones 3a–10a. Mature size 1"–8". Blooms Apr–Jul.

Why it's on this list: native species profile. Native-range data from the Lady Bird Johnson Wildflower Center (NPIN), cross-checked against iNaturalist observations. Part of Rooted Revival's regional native plant catalog — true natives for Oklahoma, Arkansas, Missouri and Kansas.

Companion Planting

[ guild · polyculture · cross-layer pairings ]

In the same native range, azure bluet pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Blue-Eyed Grass (Sisyrinchium angustifolium), Butterfly Milkweed (Asclepias tuberosa), Cardinal Flower (Lobelia cardinalis).