Mimosa trees grow no more than 40 feet in height. Other types of mimosa grow as small, shrub-like perennial plants. Both mimosa trees and shrubs produce small flowers that resemble pom-poms. The fragrant, pink flowers appear in clusters during May, June and July. Mimosa trees thrive in warm, moist climates. These trees exhibit invasive tendencies in many areas. The mimosa tree reproduces by seeds, as well as from vegetative cuttings. Germinate mimosa seeds with correct planting techniques.
Select mature seedpods for germinating. Check your area trees in the late fall or early spring for ripe seedpods. Look for straw-colored seedpods that feel slightly dry and rattle when shaken. These pods often cling to the tree throughout the winter. Separate the seeds from the pod. Discard any moldy or damaged seeds.
Expose your mimosa tree seeds to cold temperatures by stratifying the seeds. Mix together equal parts of sand and peat moss. Place half this mixture in the bottom of a plastic container. Lay the mimosa seeds over this mixture and cover with the remaining sand and peat moss. Cover the container with a lid or layer of plastic wrap. Punch a few, small holes in the lid or plastic wrap to allow airflow. Place seeds in a dark, cool location, such as a refrigerator, for two to three months.
Soak your stratified seeds in hot water overnight, or until the seeds swell. This procedure softens the hard, outer shell of the mimosa seeds, allowing easier germination.
Plant swollen seeds in potting mix placed in small seed pots to a depth two to three times the size of each seed. Firmly press the soil over the top of the seeds to remove air pockets. Water your seeds and place in a warm, sunny location. Do not allow soil to dry out during germination.
Transplant the seedlings outdoors when they are a few inches tall.