I guess you would have to look on the world wide web and come up with a seller selling Mediterranean soil and unless its not coming from there The Mediterranean please note they dug it up in back yard.
I have planted a lot of things fruits, veggies, tomatoes and it always grew just go buy a bag of organic soil Miracle grow. You have to realize that based on the climate here plants, veggies , grow and the Mediterranean climate is different and when you get their soil it would clash and you could not grow it anything on it. Please note also when I visit the Mediterranean Islands I will dig a hole and plant something just for you, Take Care. bye