Organic farming refers to the use of natural, organic solutions for the production of plant food, and by extension, eliminating the use of chemicals. Since hydroponic farming is soil-less, many of the challenges with converting a dirt farm to meet organic standards are avoided. Enclosed hydroponic setups can be shielded from most diseases and pests, and very healthy plants are much more resistant to those problems.
Plant nutrition is probably the biggest challenge for organic hydroponic farmers, but it is not impossible to overcome. Most commercial fertilizer solutions are chemically based, which cannot be used for organic operations. On the other hand, Since an organic nutrient solution is necessarily comprised entirely of organic compounds, not all hydroponics systems are suitable, particularly those that use spray heads and drip emitters.
