Throughout the descriptions by James Grey Jackson of 18th Century Barbary (Morocco) in the above book, he gives a number of examples of the extensive gardens that existed in the region.
Presumably, seedlings for these fruits were brought from the Middle East – primarily by persons travelling for the hajj and perhaps also by merchants and by early Islamic conquers of North Africa.
Here is an example, amongst many of what Jackson describes by way of fruit gardens. His description of grape cultivation being on the ground, ‘in the Arabian style’, reflects the influence of those having been on the Hajj – the great diffuser of actions and ideas in the Muslim world.:
The orange plantations of Rabat are of incalculable extent; the trees are as large as a middling-sized oak; the vineyards and cotton plantations are likewise most abundant; and nothing can exceed the good quality of the grapes, figs, oranges, citrons, apricots, peaches, and water-melons; the quality of the latter is peculiarly sweet, they are called Dilla Seed Billa; the seed of which might be advantageously transported to our new colony, the Cape of Good Hope.
The vineyards of Rabat are very extensive; the vines are cultivated in the Arabian system, on the ground, which is a light sandy soil…
Source:An account of Timbuctoo and Housa: territories in the interior of Africa Par James Grey Jackson