Variety characteristics:

• W1438 Powdery Thalia (Thalia dealbata Fraser) is a striking North American native wetland perennial selected for water gardens, pond margins, rain gardens and naturalistic aquatic landscapes. Strong rhizomatous plants form bold colonies of upright, paddle-shaped blue-green leaves with a distinctive pale, powdery coating.
During summer, tall flower stalks rise above the foliage and carry compact, branched clusters of small violet to purple flowers. The waxy flower bracts may show muted red-purple coloring beneath their whitish coating, adding ornamental interest even before individual flowers open. Mature plants typically reach approximately 3–6 feet tall and may spread 3–6 feet wide under favorable wetland conditions.
After flowering, the plants develop rounded to broadly obovoid capsules, generally containing one dark brown, mottled seed. Powdery Thalia performs best in full sun to partial shade with consistently moist soil or shallow standing water. Its substantial foliage and upright summer flowers create a dramatic vertical accent for larger ponds and wetland plantings.