they grow in fields and then the farmers fill the bogs up with water in order to collect the cranberries, because they float on top of the water and they use a machine that goes around and skims them all up.
this is just the gist of it, there are websites that explain it all, it is very interesting.
If they were to stand, they would dry out and die.
Ja. What the guy above me said.
They don't NEED to. It only makes harvesting them easier.
During the growing season cranberry beds are not flooded, but are irrigated regularly to maintain soil moisture. Beds are flooded in the fall to facilitate harvest and again during the winter to protect against low temperatures. In cold climates like Wisconsin, Massachusetts, and eastern Canada the winter flood typically freezes into ice while in warmer climates the water remains liquid. When ice forms on the beds trucks can be driven onto the ice to spread a thin layer of sand that helps to control pests and to rejuvenate the vines. Cranberries are harvested in the fall when the fruit takes on its distinctive deep red color. This is usually in late September and into October. To harvest cranberries the beds are flooded with six to eight inches of water. A harvester is driven through the beds to remove the fruit from the vines. For the past 50 years water reel type harvesters have been used. Harvested cranberries float in the water and can be corralled into a corner of the bed and conveyed or pumped from the bed. From the farm, cranberries are taken to receiving stations where they are cleaned, sorted, and stored prior to packaging or processing. In 2005 a new type of cranberry harvester called the Ruby Slipper was introduced into the industry. Whether this type of harvester with fewer moving parts will be accepted by the industry still remains to be seen.
When the cranberries are ready to be harvested, the farmers flood the "bogs" and the ripe berries float to the surface for easy pickings.
Bogs provide moisture for cranberries. For hundreds of years cranberries were harvested by individuals with cranberry pickers, a five sided box with a handle on top and wooden tines protruding over a foot in front. The bog was combed and the tines would dislodge the cranberries and roll into the box. Bogs were only flooded if early frost threatened the crop. Now bogs are flooded at harvest time. Machines beat the cranberries free and they're skimmed off the surface. Not as picturesque but that's progress.
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