The product of so much natural crossing in the wild and selective breeding at research farms and in fields is every orange, lemon ... an ever expanding family tree.

A clementine is a hybrid fruit, believed to be a cross between a mandarin and a sweet orange (as opposed ... growing other fruit trees from seed, so I planted some fresh lemon seeds.

I have a wonderful lemon tree in my present home that just explodes with fruit, a newly planted lime tree, a kaffir lime for my Asian dishes, a mandarin, and an early and late fruiting orange.