Alder Burns wrote:Your challenge is to find something that is vigorous enough to hold your terrace, hopefully something productive in multiple ways, and yet isn't too bad with invasive and moisture seeking roots competing with everything else you might want to grow on the terraces themselves.... Ideally too it would be something that can root from cuttings, so that roots might grow out of the stem into the vertical face of the terrace behind as the pole-work decays, and that is amenable to coppicing, hedging by hacking halfway through and bending, etc. In my mind only one potential rises to the top of the list of possibilites....mulberry. Many types are vigorous and hardy, tolerant of drought once established, amenable to coppice, able to root from cuttings, and of course producing fruit and (for goats and such like) edible forage....
Both bushes and grasses are going to be planted in the hedgerow that will limit the terraces, of course. Clover, iris, rosmary among others, and yes, mulberry, great! My question was more focused on trees tho, that is to say on a taller layer of the food forest scheme. Fig sounds interesting (my neighbour has a very vigorous one just next to my terraces), altough i don't know about the speed of roots growth which is really a crucial point here. Keep shooting folks, thanks!
Another tree we incidentally have a lot of along the terraces is aspen. They are wild growing, come up well from the regen and are good fodder. Later when I want to plant fruit trees there I just start thinning out the aspen.
Fast growing is bamboo but it does not like very much the sun. Eleaegnus species like the sun and paulownia grows very fast and it is a soil improver.
Acacias would be suitable too. Figs don't really grow fast. Peaches grow fast but they need plenty of fertilizer.
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