500 Alisma Subcordatum Seeds – Mud Plantain Aquatic Pond Plant

Alisma subcordatum, commonly known as mud plantain or American water plantain, is a native aquatic perennial prized for its delicate white to pale pink flowers and broad, ribbed leaves. This wetland species thrives in shallow water and saturated soils, making it an excellent choice for pond edges, water gardens, rain gardens, and boggy areas. Its understated beauty and ecological value make it a favorite among native plant enthusiasts and water gardeners alike.

Mud plantain typically blooms from midsummer to early fall, producing airy panicles of small, three-petaled flowers that attract pollinators such as bees and flies. The plant's foliage provides cover for aquatic wildlife, and its seeds are eaten by waterfowl. Alisma subcordatum is a low-maintenance addition to naturalized settings and is well-suited for erosion control along shorelines.

Plant Features

• Native aquatic perennial with white to pale pink flowers
• Broad, ribbed green leaves add texture to water edges
• Attracts pollinators and provides habitat for wildlife
• Thrives in shallow water and consistently moist soils
• Ideal for pond margins, water gardens, and rain gardens

Growing Information

• Botanical Name: Alisma subcordatum
• Plant Type: Aquatic perennial
• Sunlight: Full sun to partial shade
• Soil: Wet, muddy, or submerged in shallow water
• Water Requirements: High; grows in water up to 6 inches deep
• Growth Habit: Upright, clump-forming
• USDA Hardiness Zones: 4–9
• Bloom Season: Summer to early fall
• Mature Height: 1–3 feet
• Spacing: 12–18 inches apart

Planting & Care

Sow Alisma subcordatum seeds in a moist, rich medium and keep them consistently wet. For water gardens, plant seeds in containers filled with heavy loam and place them in shallow water (1–2 inches deep) after seedlings have developed a few leaves. Gradually adjust the water level as plants grow. Alternatively, direct sow seeds in muddy soil at the pond edge in late spring or early summer.

Keep the soil saturated at all times; do not allow it to dry out. Once established, mud plantain requires little care beyond occasional division to control spread. Remove spent flowers to encourage additional blooms and to prevent unwanted self-seeding. In colder zones, mulch around containers or bring them indoors to protect roots from freezing.

What's Included

500 Alisma subcordatum seeds.