Steve- there are a couple weeks in January where low 30's temps are a possibility. However, with a 4-6" layer of mulch I think I'll escape losing plants which don't tolerate frost. Between the microbial activity of the soil and the insulation the mulch, at least here in FL, I can keep my soil 7-8° warmer in the winter time.
For an example, I fully anticipate utilizing the Moringa tree in Texas.
In a bad year we get down to 12C (54F). Tho usually doesn't go below 14. Winter kills young moringas here. You will need to look after them very carefully for their first winter but once they are mature they will be stronger.
The best N fixer trees in m my frost freeexperience are gliricidia sepium and leucaena leucocephala. They are miles ahead of mesquite, palo verde etc for rate of growth. I am unsure how they will do below our 12C minimum but they should from what I've read be OK down to just above freezing. These trees recover well form being cut to ground level, so even if you lose the above ground part of the tree I think they will recover. They have to be in well draining soil/sand. Seeds are dirt cheap on eBay. Good luck.
Awesome information! I love when I can utilize others successes, thank you for the wisdom!
Location: Leander, TX
posted 3 years ago
The book "How to Grow Native Plants of Texas and the Southwest" by Jill Nokes discusses propagation of several hundred varieties of trees and shrubs from both seeds and cuttings, and may be a valuable resource for you.
His brain is the size of a cherry pit! About the size of this ad:
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