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Raised beds are a popular way to grow vegetables, and there are all kinds of styles. This raised bed is really done nicely. It can be covered as seasons change by spreading bird netting or greenhouse plastic over the pvc arches, plus tall plants can be grown on the trelises. Click on the link and take the time to read the comments. (No plans given, but the picture seems easy to figure out.)
Raised Bed Gardening. I love this layout. The stones create a pathway through the garden. Climbing plants can be planted along the trellis. Flowers can be planted along the path. Herbs and veggies can be planted in the raised garden beds, and are protected from little critters eating them before you do!