If you want to give it a try, plant the seeds in well-drained soil. Place the pot in a well-lit location and keep the potting mix slightly moist until germination. You can plant the small, seed-grown yuccas outdoors, but you might want to keep young plants inside for two or three years to gain some size.
How fast does Yucca rostrata grow? The plant is a slow-grower, it takes about 10 years to reach its max height. Eventually it becomes a major focal point in your garden.
Yucca rostrata (Big Bend Yucca) - A slow-growing tree-like yucca with upright stems and beautiful gray-blue narrow foliage. Although it can branch, it is most often seen with a single trunk, that can grow to 12-15 feet tall.
The Beaked yucca is a handsome species of yucca that grows with a single trunk and dense crown of foliage, 6-15 ft. tall; sometimes two or more heads develop on mature plants. Stiff blue-green leaves are 2 ft.. . . . .364011236488!]0000000000000009783314147268!]