Here is a summary of the sustainable growing practices we are using in 2010.
What is Sustainable Growing?
This term for us reflects a process and attitude through which decisions are made in our business.
It is not a simple series of steps taken and then suddenly something achieved. But rather an on-going concern or lens through which to consider decisions not only concerning growing techniques but encompassing equipment purchases, quests to reduce waste, plans for future growth and our workplace environment
We also want to let you know what “sustainable” means in practical terms. In the future, we may have industry standards to follow but for now we are following these practices and feel good about our progress.
Living Soils: There are many benefits of starting plants in sterile potting mixes but a major downside as well. Sterile media provides ample space for undesirable organisms to take up residence. We are refining our growing techniques to introduce beneficial organisms back into the system. This has major ramifications for fertility, disease and insect management.
Compost Tea: In 2008 we began brewing our own compost tea and fed it to our crops in the irrigation water on a weekly basis. In the day-long brewing process, the microbes are fed and aerated so the microflora and fauna are able to multiply exponentially. The fresh tea is then mixed into our irrigation system.
Fertility: We are using Daniels fertilizer. This is a soy based product. We occasionally will use a conventional water soluble fertilizer on special crops and we supplement with chelated iron which becomes limited by the alkalinity of our well water.
Disease Control: We are using a variety of products that essentially supply the plant roots with beneficial organisms. Besides our compost tea, there are a number of biological products that we may employ to prevent disease. These organisms take up residence on the root system protecting it and producing beneficial substances. Healthy plants resist diseases, are drought resistant and hold better in their pots.
Insect Control: We have several predatory insects that have taken up residence in our greenhouses. In addition, we use plant extracts and substances that physically harm pests rather than poison them. If needed, we’ll resort to insect growth regulators or more conventional products.
Growing Media: New for 2010: We have switched a great bulk of our soilless mix to a coir and parboiled rice hull mix. These are both waste products from food crops. We’ve also added some calcined clay to hold onto nutrients and buffer the pH. To sustain our backs we’ve purchased a big hoist and had our soilless mix put in giant bags.
Containers: We have made a commitment to using compostable pots. We are using attractive, sturdy pots in our 4 ½” annual and our 3 ½” herb programs. The pots are made from rice hulls, bamboo and straw. They’re made to last up to 18 months for growing and can be composted in a backyard or municipal compost pile. They are not meant to be planted in the ground.
Alternative Energy: We’ve purchased a number of high efficiency furnaces this fall.
Other major changes in our heating systems are hopefully not too far down the road.
