food forest
n. A garden that includes mostly food-producing plants, particularly fruit and nut trees, fruit bushes, vegetables, and herbs.
She calls that a "food forest" — a diverse and multi-layered mix of tree canopy, berry-laden shrubs, vines, groundcover and planting beds.

"You can create a food forest garden in any aesthetic style in a typical urban, suburban or rural backyard," Bloom said.
—Dean Fosdick, “Backyard chickens? Give them a 'food forest',” Associated Press, March 26, 2013
Resident Becca Verm, who once worked on a farm in South America, envisions turning the backyard into a "food forest," a gardening concept that substitutes woodlands for edible greens, perennials and fruit trees.
—Nancy Sarnoff, “The more the merrier as co-op pursues sustainability,” Houston Chronicle, February 24, 2013
1990 (earliest)
It could be the ultimate in consumer conveniences: in the wake of mobile mechanics, dial-a-maids and home-delivered beer comes an even more novel idea — pre-planned gardens planted in your own backyard.

For those who participate, it means a multi-purpose "food forest" garden is designed for the property and planted with $150 worth of plants — all for free.
—Graeme Hammond, “Forest of free food,” Sunday Mail, March 04, 1990