You could try making ‘lasagna beds’, also known as sheet composting. Basically you add compostable materials like the layers in a lasagna—it takes a little while to work, but it is effective and you don’t need to make or buy sides for the bed (unless you want to). This article explains more: http://extension.oregonstate.edu/gardening/create-vegetable-beds-lasagna-mulching
You could try making ‘lasagna beds’, also known as sheet composting. Basically you add compostable materials like the layers in a lasagna—it takes a little while to work, but it is effective and you don’t need to make or buy sides for the bed (unless you want to). This article explains more: http://extension.oregonstate.edu/gardening/create-vegetable-beds-lasagna-mulching