John Joynes posted about this in 2015
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http://www.mgsforum.org/smf/index.php?topic=2140.msg14969...And he is due to give us an update!...
And I have just stumbled upon it online
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http://www.bbc.com/future/story/20180821-are-forgotten-crops-the-future-of-foodThat article is not particularly mediterranean, but it includes moringa.
Seems worthy of having a topic of its own.
It seems to have lots of virtues.
Many parts of the plant can be eaten (though there are risks with bark and flowers).
it is very nutritious.
It grows in climates ranging from arid to tropical
it is a fast-growing, drought-resistant tree, with slight frost-hardiness (opinion varies)
So it is possibly growable in a mediterranean climate, and this paper implies it is
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https://www.sciencedirect.com/science/article/pii/S0304423817304570Note: it prefers an acid to neutral soil.
It flowers young and can be grown as an annual (so could be self-perpetuating that way).
It can be propagated from seed and from 1m long cuttings!
Has anybody here tried growing it, or seen it growing in 'our' climate?
Mike