Storing Wheat Long Term

Wheat is one of the longest storing food items around. Whole wheat kernels will store longer and better than when ground up into flour. When storing your wheat at home, make sure it is in containers specifically identified on the label as food storage containers. Round containers are best when storing wheat since wheat gives off heat and square containers stacked closely together may not allow this heat to escape.
Storing wheat in a cool, dry place is the easiest way to keep moisture content low. 
A storage temperature of 40-60° F results in fresher wheat. However, 60° F and above is still acceptable. Food storage containers should not be stored directly on a cement floor to prevent rusting and pest contamination. Wheat should also be stored away from apples, onions, potatoes, etc., since the odor or flavor may transfer to the wheat.

The biggest enemy of wheat are weevils - A weevil infestation will completely devour and ruin a stock of wheat. However, weevils may be killed by freezing so you could put your sealed container of Grain into a chest freezer for a couple of days, which should eradicate them. Another option is to remove the oxygen form the container (Weevils cannot survive without Oxygen).

Store wheat berries in a cool, dry environment that is safe from insects. Insects love to eat wheat or whole wheat flour, but are not too thrilled with refined white flour. Many people have accomplished long storage life by keeping their wheat berries in dry sealed containers.

Using carbon dioxide (CO2) from dry ice to replace the oxygen before closing it protects the wheat berries even more. CO2 is heavier than oxygen and goes to the bottom of the container, pushing the oxygen out the top and killing any insects in the process.

With or without the CO2, store wheat berries in an airtight container in a cool, dry, dark place. If you live in a warm climate, store them in the refrigerator or freezer where they can be safely kept for years. Do not wash wheat prior to storage, as it increases the moisture content and the keeping quality.

I think the easiest way is to get Mylar bags and place them in your food grade buckets. Then add 2-4 oxygen absorbers for a 5 gallon bucket, seal the Mylar bag, seal the lid to the bucket and there ya go!

Yes you can add all your wheat in one big storage unit like garbage can, however you can not move it easily and if one part of the wheat goes bad- it ALL goes bad. :(

Storing Wheat:

*Do not pack wheat tightly into a storage place
*Do not store wheat directly on dirt or cement floors. It will draw moisture from the surface
*Do not store wheat in container which holds more than 100lbs. Infestation or infiltration will contaminate the entire contents. Thats a lot of wheat to loose.
*Do not store near water pipes, heating ducts, steam pipes, washing machine, clothes dryer (vented or not)
*Do not store wheat in unheated garage or non0insulated space or a basement or underground space that is not completely dry
*Do not put salt in the wheat when storing it
*Do not use aluminum cans for wheat storage since an airtight seal is generally impossible to achieve. Even food grade plastic liner garbage cans are not designed to store wheat

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