Pickerelweed (Pontederia cordata) — Native Louisiana Aquatic Perennial

Pickerelweed (Pontederia cordata)

From June through October, Pickerelweed blooms violet-blue at the water's edge — continuous, generous, and impossible to miss. This is the premier native aquatic perennial for Louisiana water gardens: robust, glossy heart-shaped leaves, spikes of violet-blue flowers that draw native bees, butterflies, and hummingbirds to the bayou margin all summer long, and the kind of ecological productivity that makes it a foundational plant of the Gulf South wetland. Remove it and the water changes.

Grown and shipped from Big Mamou Enterprises — Bayou Self, Lake Charles, Louisiana.

Botanical Profile

• Botanical Name: Pontederia cordata
• Family: Pontederiaceae (Water Hyacinth family)
• Native Range: Eastern North America from Nova Scotia to Florida and west to Texas; native to Louisiana bayou margins, pond edges, and slow-moving waterways
• USDA Hardiness Zones: 3–10
• Mature Size: 2–3 feet tall; spreads vigorously by rhizome in ideal conditions
• Bloom Time: June–October — one of the longest-blooming native aquatics available
• Sun: Full sun to part shade
• Soil/Water: Emergent aquatic — grows in standing water 0–6 inches deep or in consistently wet soil

Ecological Role

Critical nectar source for native bees, bumblebees, and butterflies from June through October. Seeds consumed by ducks and other waterfowl. Provides spawning habitat for fish and frogs, and shelter for aquatic invertebrates. Filters nutrients from water, improving water quality in ponds and slow-moving bayous. One of the easiest native aquatics to establish — and one of the most rewarding.

Cajun Heritage & Traditional Use

Known in Cajun tradition as herbe à canard — duck herb — because the ducks ate it, the fish sheltered under it, and the Cajun families who fished the bayou knew it as a sign of good water. In the traiteur tradition, Pickerelweed was food medicine: seeds eaten raw, roasted, or ground into flour; young leaf stalks cooked as a green similar to spinach. Leaf tea was used as a mild regulator of menstrual cycles — a use documented across multiple Indigenous traditions in the Southeast. A sustaining medicine, not a dramatic one.

In the Cajun Heritage Garden

Part of the Heritage Garden collection at Big Mamou Enterprises. Plant at pond edges, in water gardens, or in any low spot that holds water in full sun. Spreads freely by rhizome — give it room. A foundational plant of the bayou ecosystem and the essential native aquatic for the Louisiana water garden.