Plant Name: Cottonless Cottonwood
Scientific Name: Populus deltoides ‘Siouxland’ — Siouxland Cottonwood, Cottonless Cottonwood
Mature Height: 40–60 ft
Mature Spread: 30–40 ft
Growth Rate: Fast (3–5 ft/year)
Sun: Full sun
Water: High; 10–15 gal per watering while establishing, 2–3 times/week during hot, dry weather; 20–30 gal per watering once established during dry periods
Foliage: Large, triangular, glossy green leaves; deciduous
Fall Color: Yellow
Flower Color: Inconspicuous; reddish male catkins
Bloom Time: Early spring
Fruit: Seed capsules; ‘Siouxland’ is a male, cottonless selection and does not produce cottony seeds
Hardiness Zones: 3–9 (−40°F to 20°F)
Features: Extremely fast-growing; large shade canopy; cottonless male selection; heat tolerant; useful for large properties and windbreaks
Additional Facts: Cottonless Cottonwood is a very large, water-demanding tree. ‘Siouxland’ is commonly selected where the rapid growth and shade of cottonwood are desired without the nuisance of cotton-bearing female trees. It performs best with deep, consistent irrigation and ample growing space.