Answer: In my experience, mimosa trees are very difficult to transplant because the root system is sparse and yet also very deep. Often the transplanted tree dies and the old root regrows in the orginal spot from root that has been left behind. For this reason, I would suggest you look for small seedlings to transplant in early summer, or consider buying a new tree to plant. But if you really want to try to transplant it, wait until spring.
Hollies are also better transplanted in the spring. The following web page includes detailed instructions. You may need to cut and paste the complete url to make it work correctly.
Blackberry lily or Belamcanda will self seed in the garden if the seeds are left on the plant to mature and eventually drop to the ground naturally. The resulting seedlings can then be transplanted easily while they are still small. Or, you can collect the seed and start it indoors.
Indoors, place the seed on the surface of barely dampened seed starting mix (do not cover the seed, just press it onto the soil.) Mist lightly and cover with clear plastic wrap to help maintain humidity. Average room temperature is fine. Set in a bright location out of direct sun until germination occurs, then immediately move to a very bright place or put under lights. Germination often takes several weeks, and you may find some sprout right away while others take their time.
Have fun with your projects!
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