Asparagus is a fast-growing perennial vegetable that will create a soft, nearly evergreen shade to give additional humidity and protection from the scorching sun to most any fruit tree. 

Bamboo is a fast-growing grass with edible shoots that comes in many different varieties, some with more delicious shoots than others. It is excellent for zone-pushing your fruit trees. 

Beautiful and evergreen, the Camellia Sinensis is the plant where one harvests green, white, and black teas. 

More uses for the camellia sinensis in the edible landscape.

These delicious edible tubers produce a BOUNTY of vines that can be draped over and through a fruit tree suffering from sun scorching during a hot summer. The addition of these vines will also increase the humidity for trees that prefer to grow in a shadier, more moist environment, so if you are trying to create shade where there are no tall-growing plants, growing sweet potatoes in the summer may be a good option for you. 

Sweet potato vines establish quickly and grow at phenomenal speeds, especially when given adequate nutrition and water. 

The green tops of the Yacon, or Earth Apple, can grow to be 5 feet tall and create soft, velvety leaves that create a nice shade. As they are tuber vegetables, like sweet potatoes, they work well being grown "between the roots" of an establishing fruit tree, which can become a dedicated spot for growing these edible tubers, especially once your soil improves to the point where you can harvest using a pitch fork, which tends to damage the roots of other plants far less than digging.