// SPECIES PROFILE · PERENNIAL · NATIVE

Powdery alligator-flag

Thalia dealbata

Powdery alligator-flag (Thalia dealbata) is a perennial in the — family. Native range includes AR, MO, OK. Hardy in zones 5a–10a. Mature size 38"–8'. Blooms May–Oct.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 11 U.S. states, including AL, AR, GA, IL, KY, LA…
USDA hardiness: Zones 5a–10a
Mature size: 38"–8'
Sun: Part shade
Water: High · moisture-loving
Bloom: May–Oct
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Powdery alligator-flag (Thalia dealbata) — *Thalia dealbata* — Powdery alligator-flag. Photo by Lip Kee via Wikimedia Commons (CC BY-SA 2.0).

Field Notes

[ growing · ecology · siting · care ]

Powdery alligator-flag (Thalia dealbata) is a perennial in the — family. Native range includes AR, MO, OK. Hardy in zones 5a–10a. Mature size 38"–8'. Blooms May–Oct.

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, powdery alligator-flag pairs naturally with: American Lotus (Nelumbo lutea), Broadleaf Arrowhead (Sagittaria latifolia), Blue-Eyed Grass (Sisyrinchium angustifolium), Butterfly Milkweed (Asclepias tuberosa).