I cut down a mimosa tree and now there are tiny sprouts coming out of the stump. Is there any way I can transfer and plant the tiny trees somewhere else?
If the sprouts are growing from the stem/roots beneath the surface, they will root into the soil and can be detached at the base, and transferred to a new location. Do this while the plant is dormant, or it could die from over transpiration.
If the sprouts are growing from the stump above the soil line, heap lightweight growing medium (like soilless potting mix) over the stump at least 6" up the stems of the sprouts. Keep this moist throughout the season. When the plant goes dormant, check for roots. If there are only a few, wait another season. The next year, check again. If you have strong roots in the mound, congratulations! You've successfully mound layered your new trees! They can be detached at the base and moved on.