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Growing Mimosa Trees

Updated on March 10, 2017

Pink Mimosa (Botanical Name: Albizia julibrissin)

Pink Mimosa. There is also white mimosa.
Pink Mimosa. There is also white mimosa. | Source

Starting from Seed

Mimosa trees are beautiful, drought resistant, and are delightful to observe in their sensitivity. The leaves fold when touched, at night, or when exposed to extreme cold or heat. The blossoms are puffy, and attract hummingbirds with the bright color and aroma.

Purchasing the trees at various heights is usually fairly affordable, but there are several trees near our home, that I decided to pick up some of the dropped seed pods and try growing some from scratch.

I first made sure the pods were thoroughly dried out, fallen from the tree to ensure they were ready to plant. There were two methods to start the seeds that I tried.

Method #1

Open the seed pod which houses several seeds. Separate and place in a folded wet paper towel. Place in a dark cool place. Keep the paper towel damp but not too wet. In a few days the seeds will begin to open up with sprouts. Plant in starting soil about 1/2 inch deep, and place in sunny window, or outdoors if the weather is warm.

My results: Two seedlings came up but turned yellow and withered in about a week.

Method #2

Making sure seeds are dry, plant in moistened seed starter soil about 1/2 inch deep. Place in sunny window, or outdoors in direct sunlight when temperatures are above 50 degrees. Keep soil barely damp (over watering can lead to fungus or mold growth). I allowed the soil to dry a little before wetting it again.

My results: Seedlings began to appear within the first week, and continue to grow, keeping them indoors at night and placing them in the sun during the day in temperatures over 50 degrees.

Seed pods can encase up to 12 seeds, or as little as 2 seeds.
Seed pods can encase up to 12 seeds, or as little as 2 seeds. | Source

Seed Pods

As seen in the photograph above, there can be quite a few seeds in one pod. On the other hand, I have picked up pods under a Mimosa Tree that only had one seed inside. I still planted those single seeds in hopes it was not a genetic issue that would cause a weakness in the resulting tree.

The pods are thin, so be careful when opening them to get the seeds. A paper plate was used here to have a 'catcher' while opening the pods, and to have a good light background for the photograph of the seeds. (Next photo).

New Seeds

This is how the seeds look outside of the pods. Make sure the pods are dry before opening to retrieve the seeds.
This is how the seeds look outside of the pods. Make sure the pods are dry before opening to retrieve the seeds. | Source

Planting

The best way to start seeds, I believe through experience, is to use peat starter pots using seed starter soil. Make sure there is enough soil in each pot to cover the seed well leaving space for new roots to develop. Plant the seed 1/2 inch deep in moistened starter soil. Place in a sunny window if the temperatures are still below 50 outside, or cloudy. Otherwise, set the pots outside in the direct sun during the day, and bring into the house at night.

Use a spray bottle to moisten the soil if there is fear of over watering. I am using a small water bottle, dripping water on the soil away from seedlings so they are not disturbed. Over watering can also 'float' the seedling and dislodge the new roots. Dislodging the roots at this time can put the plant into shock and it will wither away.

After the seeds sprout, there will be a two leaf bud that opens followed by two leaf limbs that develop a fern look with several leaves on each side. Continue to carefully water the plant until it reaches about 2 inches in height.

When the plant is 2 inches high, the pot can be separated from the cluster by using scissors to cut it away. Prepare a large, deep pot with more seed starting soil, and moisten thoroughly. Make a hole as deep as the peat pot in the middle of the large pot and place the entire peat pot into the hole, pressing it down slightly. Move a small amount of the new soil over the top of the peat pot all the way to the base of the plant.

Proceed to continue watering lightly, keeping the new soil damp but not too wet.

Peat Pots

Peat pots come in clusters of 6 or 8 attached pots in a square shape, attached only at the tops. This is for easy cut away of each pot when seedlings are ready for transplant.
Peat pots come in clusters of 6 or 8 attached pots in a square shape, attached only at the tops. This is for easy cut away of each pot when seedlings are ready for transplant. | Source

Large Deep Pots

The reason for larger, deep pots is that new growth of the new seedling will develop rapidly, so there needs to be room for the base to grow, root systems to spread, and new growth of limbs and leaves on the top. If there is limited space the plant will stay small and could die, also if there are too many plants in one pot.

The seedling can be contained in the large pot until it is up to 2 feet high, then transplant to an even larger pot would be necessary. When the plant is 3 to 4 feet high it can be safely transplanted into a sunny area in the ground. To prepare the dirt for transplanting the tree from container to ground, dig a hole the same depth as the container, but twice as wide. Add just a handful of growing soil, or fertilizer and mix with the dirt at the bottom, water until moist. Let the ground absorb the moisture for an hour or so before transplanting.

Carefully use a spatula, or table knife to cut around the inside edge of the pot, loosening the tree and root system from the container. Lean on one side next to the hole that has been readied for the plant. Do not use the stem of the tree to pull it out of the pot, this will damage the plant and possibly kill it. Loosen the plant from the container enough that when laid on one side and tipped, the entire plant and potted soil around roots basically fall out of the pot.

Lift the plant by cupping the root system with both hands and lower into the hole. Make sure the plant stays centered by filling in around the edges and press down slightly, so there is a shallow bowl effect surrounding the stem, or trunk of the tree. Water immediately.

A video on how to transplant a tree is provided, however, it is showing how to move a store purchased tree from a container to the ground. Just follow the steps on digging the hole, how to fill it in, and watering. I hope it helps.

Transplanting

This photo shows a Mimosa seedling 2 inches high, transplanted with peat pot into the large pot of starting soil.
This photo shows a Mimosa seedling 2 inches high, transplanted with peat pot into the large pot of starting soil. | Source

How To Properly Transplant a Tree From Container - Treeland Nurseries (October, 25, 2010)

Planting Zone Map

Locate prime areas to grow Mimosa. These trees grow best in Zones 6 through 9.
Locate prime areas to grow Mimosa. These trees grow best in Zones 6 through 9. | Source

Mimosa Trees—4 Months Old

I found transplanting the Mimosa into 5 gallon pots helps to increase size and trunk strength before transplanting directly to soil.
I found transplanting the Mimosa into 5 gallon pots helps to increase size and trunk strength before transplanting directly to soil. | Source

Update

This small tree shown in the photo above is now 5 feet high and doing well after the winter. It is amazing how resilient they are! I also transplanted two very small ones in our front yard in full sun, and they are doing very well also.

These trees take a lot less care than I thought at first, lending to mostly watering and I have only fertilized them one time. I now have 7 trees growning, 2 that are five feet high or a little over, three that are about 3 feet high, and 2 that are about 1 1/2 foot tall.

I am using bamboo poles to prop the tree until the trunk fills out. Trimming the very top of the tree off helps to fill out more branches, promotes flowering, and helps the trunk develop more. It is actually a good idea to trim the top off when the plant is about two to three feet tall, that way the trunk fills out as it grows.

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Summary and List

To grow a Mimosa Tree from seed, it is necessary to purchase seeds from a seed company, or if there is a nearby Mimosa Tree, ask the neighbor if he or she would allow you to pick up some of the fallen seed pods.

This is what is necessary to start the seeds.

  • Seed Pods
  • Peat pots (when transplanted these will disintegrate into the soil)
  • Water

When the seedling grows to about 2 inches high, transplant the Mimosa and peat pot into a larger pot, and continue to water without over watering. When the plant grows to 2 to 3 feet, it will be time to transplant into the ground. Items necessary for this last process:

  1. Shovel
  2. Table knife or spatula to loosen plant roots from pot.
  3. Fertilizer - or mulch
  4. Gloves - To protect hands during transplant process
  5. Water

The trees grow best in warmer temperatures, are drought resistant, and love sunlight. Grow at least 10 to 15 feet away from buildings. Be aware when seeds fall many seedlings may grow in the surrounding area if not cleaned up right away, however, the tiny leaves fall off during the fall and disintegrate, so there is no leaf clean up necessary.

Water periodically, and enjoy watching beautiful growth, pink blossoms, and hummingbird visits!

References

Photos:

Mimosa Seed Pods, Marilyn Fritz (2015)
New Seeds, Marilyn Fritz (2015)
Peat Pots, Marilyn Fritz (2015)
Transplanting, Marilyn Fritz (2015)

How To Properly Transplant a Tree From Container - Treeland Nurseries(October, 25, 2010).
Planting Zone Map, National Arbor Day Foundation, (2002).

Comments

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    • Marilyn Fritz profile image
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      Marilyn 7 weeks ago from Nevada

      This summer I have had to fight off white flies, black flies, aphids, and some unknown other predator of the Mimosa leaves. Alas, the weather is cooling, causing the bugs to migrate somewhere else offering relief to the Mimosa's. They are producing more green leaves, growing taller, and are much happier. So am I!

    • Marilyn Fritz profile image
      Author

      Marilyn 8 weeks ago from Nevada

      The leaves on my Mimosa's started turning yellow and falling off too. On inspection, I found tiny white fly's were sucking juices out of them. I used a spray of natural ingredients to kill the fly's, waited about half an hour and gently rinsed off the pest control with a fine mist of water. So far they are doing better and sprouting new limbs, and leaves.

    • profile image

      Gale 3 months ago

      If U live in Arkansas they grow like weeds. My yard is full of them. Love them

    • profile image

      geoffrey smith 4 months ago

      l live in Lancashire England, interesting reading learned alot. Can l transplant one in my garden its in the place and its 10 foot tall. Thank you. Geoff.

    • profile image

      jimmie hargrove 5 months ago

      I replanted 2 mimosa plants and when they started to grow the leaves somehow started falling off. can anyone answer why this is happening. This is very strange.

    • profile image

      Mrs. Gamble,Rockne 6 months ago

      Found,that bye reading your thoughts the pictures of each step,make u feel better.like yep! I am doing the rite thin.Do I belive their is a male or female tree.

    • Marilyn Fritz profile image
      Author

      Marilyn 18 months ago from Nevada

      I am off work over the Memorial Day weekend, so I will be posting an updated photo of that 5 gallon Mimosa. It has grown, and I now have two of them that size, and I experimented transplanting two small ones directly in soil on the north west side of our house. So far, they are growing nicely, unfortunately so is the Burmuda grass that I am trying to get rid of.

    • profile image

      Mimosa lover 19 months ago

      I love Mimosa trees!! I thought I was the only one! I had one in my backyard growing up and I loved climbing them and smelling the pink flowers. I've been wanting to plant one in my backyard for a long time. They are definitely one of my favorite childhood memories!

    • Marilyn Fritz profile image
      Author

      Marilyn 23 months ago from Nevada

      This winter has been a little tough on the Mimosa trees, however they are thriving and beginning to show signs of new growth, especially the ones I placed under the awning to protect them from frost. I will post some new photos as they keep growing.

      We actually moved several to the front patio and they are doing great!

    • Marilyn Fritz profile image
      Author

      Marilyn 2 years ago from Nevada

      The Mimosa seeds I planted are growing nicely now that it is warming up a bit. I have been able to place them in the sun for a few hours every day to acclimate them to the outdoors for future transplanting. I now have 6 small trees, with 20 more seeds planted. The air is so dry out here, and rain is very low, so the trees are not so invasive. When the seeds blow around and settle beneath the soil, the seeds don't sprout. After a few months the seeds decay. The only ones that survive are ones that land in areas where sprinkler systems keep the soil moist, or near manmade ponds or lakes.

      They are becoming popular trees here in the desert area.

    • Marilyn Fritz profile image
      Author

      Marilyn 2 years ago from Nevada

      Hi DDE, I am happy to hear you have a Mimosa. How tall is it? Has it blossomed? Mine are still pretty small, but growing fast again now that the weather has warmed up a bit. Keep us posted how the tree is growing, or if you run into any problems with it. Thank you for commenting on my hubs.

    • DDE profile image

      Devika Primić 2 years ago from Dubrovnik, Croatia

      I do have a mimosa tree planted on the outside of the front yard and it looks great.

    • Marilyn Fritz profile image
      Author

      Marilyn 2 years ago from Nevada

      Hi Rachel. Thank you for your comment. I love Mimosa, and they smell nice when they bloom, not to mention that they draw Hummingbirds. From what I can tell from the USDA Plant Hardiness Zone Map, most of PA can grow the cold hardy Mimosa, except for a very small area in the extreme NE and NW. Depending on how far NE you live, it looks like you are in Zone 6, and the Mimosa will grow in zones 6 through 9. Some parts of upstate New York can also grow Mimosa. You can look up the USDA Plant Hardiness Zone Map online, put in your zip code and it will show what zone you are in.

    • Rachel L Alba profile image

      Rachel L Alba 2 years ago from Every Day Cooking and Baking

      What a beautiful tree the Mimosa is. Do you know if they grow in NE PA? If so I would love to get one. Thanks for all the good information. I voted thumbs up, useful, beautiful and interesting.

    • MariaMontgomery profile image

      MariaMontgomery 2 years ago from Central Florida, USA

      I do think mimosa trees are pretty, especially when blooming. In the south where they cover the roadsides, they are considered by many as "trash trees" because they are so very prolific at reproducing. We had one in our front yard when I was a child, and I loved it. They branch low to the ground, so they are easy to climb. I used to climb ours and sit up there and read. I loved the tree -- my dad hated it, because of all the seeds it dropped.

    • Marilyn Fritz profile image
      Author

      Marilyn 2 years ago from Nevada

      Living in Las Vegas for many years, and experiencing cold weather from 29 degrees up to and exceeding 115 degrees, I can honestly vouch for the trees resistance to drought, and weather conditions. The Mimosa is a beautiful tree, and hardy, the only thing I know of that could be a problem is disease. A fungal infection, Fusarium oxysporum ( a vascular wilt disease) can damage or destroy a tree. Having researched the disease (because I am growing quite a few saplings and have one mature tree), a balance of fertilizer is necessary, and maintaining good root foundation and repair of wood wounds helps to avoid infection. I don't keep the soil too moist, nor do I allow it to dry out completely around the roots. Care is also taken to keep insects under control. So far so good, no disease.

    • poetryman6969 profile image

      poetryman6969 2 years ago

      I like the seeds and flowers on these trees. If they truly are drought tolerant that's a definite plus.