Care of Mimosa Trees


In 1745, the mimosa tree was introduced to the United States from China. The small tree become widely cultivated by gardeners as a specimen tree for its fragrant flowers. The mimosa tree is often called the silk tree. It is easy to grow and establish. This ease-of-growth has earned it the classification of a category two invasive plant by Florida's Exotic Pest Plant Council. The tree easily escapes cultivation and flourishes in the wild and alongside the roads. The tree can easily grow to a height of 40 feet. Seeds are spread by animal indigestion and excretion or from tree runners. Seeds can lay dormant for years before reproduction.

Step 1

Plant your mimosa tree in a sunny location with well-drained soil. The ideal spot should offer six or more hours of sun per day. Plant the tree away from houses or outbuildings because the long seed pods can be abundant and difficult to clean up. Locate the tree in an area with other large trees, fence line or strong vegetation to offer protection from strong winds. The mimosa tree has brittle limbs so it can sustain a great deal of wind damage in a severe storm.

Step 2

Cultivate a mimosa tree from a seed in a mimosa seed pod. Plant the seed in a plant-starter soil approximately 1/2 inch deep. Set the container with the seed in a sunny window and await germination. Keep the soil moist, but not water logged. Cultivate the seed indoors until it's firmly established, then transplant outside.

Step 3

Water your mimosa tree sparingly, as they require very little water. Average rainfall is normally the only water source they require, unless there are extreme-drought conditions.

Step 4

Prune your mimosa tree in the spring. Remove any dead or broken branches using a pair of loppers. Trim any branches that are growing wayward. The mimosa handles pruning well when required, but also does fine with no pruning.

Step 5

Fertilize your mimosa tree in the early spring using a well-rounded, 10-10-10 fertilizer. Spread 1 cup around the base of the tree and water until the fertilizer is absorbed.

Tips and Warnings

  • The mimosa is extremely prone to vascular wilts. Vascular wilt will invade the tree's vascular system and slowly cut off the water supply. The only cure is to try to remove the diseased wood and burn it. Normally, this step is too late to save the tree because the fungus is widespread. Do not use a fertilizer with a high nitrogen content. The mimosa does not need a high nitrogen fertilizer since it can fix its own nitrogen.

Things You'll Need

  • Loppers
  • Fertilizer (10-10-10)


  • Center For Aquatic And Invasive Plants: Mimosa Tree
  • Plant Conservation Alliance: Mimosa Tree
  • University Of Florida: Mimosa Tree

Who Can Help

  • Forest Service: Mimosa Tree
Keywords: mimosa tree, silk tree, mimosa tree care

About this Author

Based in Oregon, Kimberly has been a freelance writer since 2006. She writes for numerous online publications. Her writing has a strong focus on home improvement, gardening, parenting, pets and travel. She has spent most of her life working as a veterinarian technician, landscape adviser and owned a pet boarding, training and grooming facility in Florida