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Hardiness: USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F) USDA Zone 10a: to -1.1 °C (30 °F) USDA Zone 10b: to 1.7 °C (35 °F) USDA Zone 11: above 4.5 °C (40 °F)
On May 18, 2008, Cordeledawg from Cordele, GA (Zone 8a) wrote:
Horrible aquatic weed that has covered my beautiful water lilies in my pond. I am getting ready for war over this weed. Had the county agent out to help me determine how to get rid of it. He advised me to kill it with Rodeo in small patches at a time as to not deplete the oxygen in the water. I borrowed a boat and will soon start the fight. I may rake out the dying foliage, just depends if I'm physically able to do it without falling out of the boat.
On Nov 22, 2006, frostweed from Arlington, TX (Zone 8a) wrote:
Alligator Weed, Alligatorweed Alternanthera philoxeroides ia Naturalized in Texas and other States is considered an invasive noxious plant and is prohibited in Texas.
On Apr 1, 2004, giftofthegab from sydney
() wrote:
A perennial herb either free floating or a creeping terrestrial.
Leaves are narrow and elliptical, flowers are a silvery white, rounded on long stalks. Stems are hollow, which form a dense mat.
Considered a noxious weed in Australia due to easy propagation from almost any part of the plant, including rhizomes, stolons or stems.
