In the last century human created a new Anthropocene Geological era, where cities count only 10 tree species and people consume only 20 veggie varieties. If you accept the “fact” that there are about 80 000 known plant species and that 10% of them take part of the edible plants than you will understand that it's our challenge to Create with you Food Gardens like forests with up to 300 interesting plant species and a boost for the biodiversity and the microclimat.