Basically, people buy membership shares, which is like agricultural "futures". They contribute cash early in the season, then get the produce as it becomes available.
Apparently these CSA's even deliver the produce right to your door! That is pretty cool.
Here is the article about the CSA in Queen Creek, from the Tribune:
Aside from growing your own garden, there's probably not an easier way to get your veggies than having them delivered to your door. That's what Queen Creek Desert Roots Farm offers families who purchase a share of the harvest for a 12-week season.
Desert Roots, which produces over 75 different pesticide-free fruits and vegetables throughout the year, is a CSA or Community Supported Agriculture farm.
According to localharvest.org, CSA farms exist all over the nation as farmers offer shares - typically a box of vegetables, but it might also include other products such as milk and eggs - to customers who buy a membership to receive a weekly bag, basket or box of produce during farming season. The website says the arrangement allows farmers to market their food early in the year before they start spending 16-hour days in the fields, receive payment early in the season to help with cash flow, and gives farmers a way to get to know the people who buy their produce. It provides consumers with fresh food, exposure to new vegetables and ways of cooking them, and the chance to learn more about farming.
In addition to produce, Desert Roots Farm offers customers the option of adding a Superstition Farms dairy box to their weekly home delivery, and the opportunity to buy Arizona-raised grass-fed beef, chicken, pork and eggs.
Home delivery is convenient, but if you'd prefer, you can pick up your weekly veggie bag at one of 12 Valley locations. For more information, visit www.desertrootsfarm.com or call (602) 751-0655