 | Rio Grande Cottonwood, Valley Cottonwood, Wislizenus Cottonwood, Alamo Populus fremontii var. wislizenii Salicaceae Rio Grande cottonwood is probably the most common cottonwood in the northern and western portions of the Trans-Pecos area of west Texas, growing along waterways, irrigation canals and drainage ditches. It is a fast-growing tree, sometimes 110 feet tall, and like all cottonwoods relatively short-lived. Plant Habit or Use: large tree Exposure: sun Flower Color: yellow-green on female trees, purple-red on males Blooming Period: spring Fruit Characteristics: on female trees, drooping racemes of egg-shaped capsules, containing seeds covered with cottony hairs Height: to 110 ft. Width: to 40 ft. Plant Character: deciduous Heat Tolerance: very high Water Requirements: high medium Soil Requirements: adaptable Additional Comments:
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