We currently do not have an organic option. Our cranberry marsh has been in commercial operation since 1873, and for four generations. We were one of the first cranberry farms to implement an integrated pest management (IPM) program in the early 1980s, and we have prided ourselves in maintaining wildlife diversity, being good stewards of the land, and managing the ecosystem as a whole.
The fertilizers we use are comprised of the same elements that are found in all plant species, and we use biological controls whenever possible, such as flooding, for insect control. Cranberries need nitrogen to grow, but the plants cannot use the typical nitrate form. The form of nitrogen cranberries can utilize is ammonium sulfate, and there is no residue of any chemicals by the time we harvest (we, and other handlers who buy our fruit, test for this).
We bring in (rent) honeybees for pollination, which lasts about a month, since we have early to late season cranberry varieties (yes, there are more than one variety of cranberry! – similar to different varieties of apples or grapes). This is also the time when insect pests emerge, and we do not want to apply anything that would jeopardize the honeybees and native pollinators. We work very closely with “scouts” who are part of our Integrated Pest Management team, and when it is appropriate to do so, we apply limited amounts of fungicides and insecticides. Our last application of anything is at least a month before harvest, and there is no concern for residue by the time we harvest.
Since we are surrounded by wetlands, the cranberry industry is highly regulated in regards to adding anything to the soil, water, and/or plants. The fertilizers and pesticides that are registered to use on cranberries are very limited, due to the fact that cranberries are a minor use crop that are grown near sensitive areas.
There is no genetic modifying in any way, no need for Roundup® ready vines, and cranberries were found growing wild on the same land we use today. Cranberry vines are a perennial, so whatever we do this year affects next year, and some vines on the farm have been going strong for more than 75 years. We live on the farm, we value clean water and bio-diversity, and are very mindful as to what we apply to the nearby cranberry beds. We constantly focus on our sustainability program, and use the best management practices established by UW-Madison.