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fig roots > roof tiles
In my folks old place in SW France the roots of our neighbours fig went under a thick stone wall and then through the wall of my folks chai.
None of the fig trees in anyone's gardens produced decent figs year on year. Some years you'd get them late in the season, but nothing like say Croatia or southern Italy.
They do give good shade when it's blisteringly hot.
Was in a pot and then planted in a hole lined with roof tiles. Not sure if it will work perfectly but will see. I want it to grow quite big and didn’t have a big enough pot