I use raised beds in my market garden to provide early soil warming and to protect against flooding. Here's a raised bed garden plan that can be adapted to grow a variety of crops.
First, the New Terra Farm sunny garden. This is my main season garden, and as the name suggests it gets full sun. This site is about half an acre (approximately 100' x 200')
I plan this garden in 50-foot sections; note that you could further subdivide each section into two 25-foot or three 16-foot beds, if that suits your plans. We chose this size partly for ease of movement around the garden (you only have to walk a maximum of 25 feet to find a cross path), and partly because we use a lot of 50-foot soaker hose for irrigation.
Having a consistent size of beds makes crop planning easier,
too. I know how many of each crop will fit in my beds; if I need to
plant 200 cabbages and I know that 100 will fit in a bed, then I can
calculate how many beds I will need.
I leave lots of path area to make it easier to move around the garden. Each bed has a path that's about 16" wide; I put wider paths between 50-foot sections, so I can bring equipment in a out. And my raised bed garden plan also allows for a 'road' right done the middle so I can use my truck to bring bigger equipment in and out.
My raised beds are oriented north-south. This orientation helps make sure that each bed gets adequate sunlight throughout the day.
You can lay out your garden using stakes and string, or wooden frames to mark the bed areas. Here's the sequence for bed-making:
The picture below is me doing a little 'practice teaching' to a farm intern. Love watching other people work ;-)
My current gardens total just over an acre, and have more than 200 beds that are each about 150 square feet in size. But if you have a smaller area to work with, here's a raised bed garden plan that will work for a big home garden or a small commercial garden.
Laying out the garden. The total bed area is 5,000 sq ft, consisting of 100 beds each 50 sq ft in size (I'm ignoring path area to make this simple.) As a suggestion, you could lay out 50-ft x 2ft beds, then sub-divide them. This would let you use 50-ft drip or soaker hose.
The beds are oriented north-south, or as close as you can come. Being off by even 25-30 degrees will not seriously affect your garden.
The crop plan for your mini-market garden: this table presents a list of possible crops for your garden, and the basic information you need to get started.
The table above is based on 1) the popularity of various garden vegetables; 2) the space required to grow each crop; and 3) the timing to start and replant each crop to sustain a harvest over an entire season.
The table shows 20 market garden crops that are popular in my area; you should adapt this list to suit your own market. Note also that you can easily add crops with out adding space by inter-planting - e.g. planting radishes with your carrots - or by succession planting - like in the example above with late potatoes following early lettuce.
Bootstrap Market Gardening, my first Bootstrap Book, shows you step-by-step how to start-up, market and manage an organic market garden based on CSA principles.
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