When designing a food garden it’s important to set it out so you can maintain it as easily as possible.  One of the best ways to do this is to divide your garden into a series of zones based on the distance from your back or front door multiplied by level of activity.

Zone one Things that need to be accessed frequently and at short notice.  For example herbs for cooking and picking lettuces for salads. Also a lemon tree and anything in pots or tubs, as they will need regular watering.
zone two The area of the garden that is visited less frequently but you still need easy access to.  The main vegetable patch and greenhouse are good examples of what to place in this zone.
zone three The area of the garden that is visited least often, usually only once a day.  The chicken run to feed the chickens and collect the eggs and your main orchard are good examples of zone three activities.

These zoning illustrations and notes are based on a fairly large back yard.  However the same zoning principles can be applied to much smaller gardens,  it's just that the scale is smaller.   Only the tiniest of gardens will not benefit from being divided into zones.