You may well be better off trying one of the active Acacias. IIRC, Acacia longifolia is already established in a few locations in Portugal and there's the advantage of being able to use the pyllodes ("leaves"
) as a more sustainable, easier to collect source material.
Check out some of the Acacia threads here.
That's not to say you shouldn't also give growing MH a try as well!
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“There is a way of manipulating matter and energy so as to produce what modern scientists call 'a field of force'. The field acts on the observer and puts him in a privileged position vis-à-vis the universe. From this position he has access to the realities which are ordinarily hidden from us by time and space, matter and energy. This is what we call the Great Work."
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