University of Wisconsin-Madison | Botany Plant Growth Facilities

Botanical Garden

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Genus: Sparganium Species: eurycarpum Common Name: Giant Bur-Reed Family: Sparganiaceae Order: Poales Native: Northern Hemisphere Habit: Herbaceous Perennial Height: 3 to 6 feet Width: 3 to 4 feet Flowering Season: Spring and Summer Flower Color: Green turning to yellow then brown Propagation: Seed, division or tuber Zone: 3-10 Note: This emergent, tuberous, aquatic plant is suitable for water gardens. Giant Bur-Rusht has round bur-like flower heads and strap-like leaves. The female flower heads are spiny and spherical, turn from green to brown as they mature. The ttubers and stem base are edible. Prefers sunny, moist, well-drained, ordinary garden soil.