Neches River Rosemallow – Hibiscus dasycalyx

Overview

Neches River Rosemallow (Hibiscus dasycalyx) is a rare, endemic perennial hibiscus native to the Neches River basin in East Texas. It is a threatened species in the wild, prized for its delicate, pure white flowers with a deep red center and finely textured foliage.

Botanical Profile

Description

Grows 3–6 feet tall with an open, airy habit. Leaves are deeply divided into narrow, linear segments, giving a fern-like appearance. Flowers are 3–4 inches wide, white with a striking burgundy-red eye, blooming from summer to fall. The calyx is densely hairy (hence dasycalyx).

Conservation & Cultivation

• Status: Federally listed as threatened; cultivation helps conservation.
• Zones: 7–9 (possibly 6 with protection).
• Sun: Full sun to part shade.
• Soil: Moist, sandy loam; tolerates periodic flooding.
• Water: Consistent moisture; prefers wet feet.

Garden Value

A unique native for rain gardens, bog gardens, or moist meadows. Attracts specialized pollinators. Ensure plants are nursery-propagated, not wild-collected.