species 3,253 observations
Powdery Thalia
Thalia dealbata
Field notes
Thalia dealbata, the powdery alligator-flag, hardy canna, or powdery thalia, is an aquatic plant in the family Marantaceae, native to swamps, ponds and other wetlands in the southern and central United States. Its range includes much of Coastal Plains and the lower Mississippi Valley (States of South Carolina, Georgia, Alabama, Mississippi, Louisiana, Texas, Oklahoma, Arkansas, Missouri, Illinois and Kentucky). The plant has been grown as an aquatic ornamental because of the pretty violet flowers, and in cultivation has been proved hardy as far north as Philadelphia (Pennsylvania) and Vancouver (British Columbia).
Thalia dealbata grows to 6 ft (1.8 m), with small violet flowers on an 8 in (20 cm) panicle held above the foliage. The blue-green leaves are ovate to lanceolate, dusted with white powder and with purple edges.
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Range
Greener is more native, amber more introduced; paler is less certain. How this was decided
Key traits
- Layer
- Herbaceous plants
- Light
- Part shade
- Moisture
- Wet
- Water use
- High
- Deer resistant
- No
- Plant type
- Herbaceous perennial Water plant
From the Lady Bird Johnson Wildflower Center and NC State Extension.