The exquisite blooms, odd pods, and cottony puffs of the prickly-trunked, Silk Floss trees are hard to ignore. This tree is a standout! It comes from subtropical forests of Brazil, Argentina, and Paraguay, but it flourishes as an ornamental landscape tree in subtropical regions, including the southern US. A mature floss silk tree can be 60 feet tall and 30 feet wide! In bloom, its white flower covered umbrella makes it one of the most beautiful trees in the world and a favorite of hummingbirds and pollinators of all kinds.