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Download pampas grass - Big Island Invasive Species Committee (BIISC)
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Big Island Invasive Species Committee PAMPAS GRASS Early Detection Target Cortaderia spp. If found call 961-3299 Cane Grass Leaves: Silvery green, sharp edged blades, 4'-6' long Seeds: 1/2" long spikelets, silver to pink with long bristles Forest and Kim Starr Flowers: White plume like flowers, 6-8" long, held above leaves on 3' stems GRASS Forest and Kim Starr Description: Large, clump forming grass to 10' tall Don’t confuse with this look alike: Forest and Kim Starr Forest and Kim Starr Ilan Koen - Wikicommons Present PAMPAS GRASS Cortaderia spp. Family: Poaceae Origin: South America, New Guinea, New Zealand WRA Score: 26 Big Island Habitat: Dry, coastal to wet forest, up to 4,000 feet Description: A large, clump forming grass to 10 feet tall, with narrow, sharp edged, silvery green blades, 4-6 feet long. Flowers are white feathery plumes, 6-8 inches long, held above the leaves on 3 foot stalks. Seeds are 1/2 inch long, silver to pink spikelets with long bristles. Impacts: Pampas grass has been declared a noxious weed in Hawai'i, California, South Africa and other locations. It forms large clumps, displacing native vegetation and increases the risk of fire in native forests. Dispersal Mechanism: Pampas grass produces abundant seeds which are blown over long distances, up to 15 miles. Cultivation: While it has been cultivated as an ornamental landscape plant elsewhere, pampas grass is a noxious weed and should never be cultivated in Hawai'i. GRASS Don’t confuse with: • Cane Grass (Cenchrus purpureus) This tall grass grows in patches and has long bladelike leaves, like pampas grass, but the flower spikes are much more compact and resemble foxtails, instead of feathery plumes.
