This site does not earn commission on any link today. If that changes, this notice will say so.
How to Store Wheat Berries and Fresh Flour
Updated 2026-11-04
Whole wheat berries are one of the easiest foods to store, as long as you control moisture. This guide draws on Utah State University Extension.
The essentials
| Factor | What the Extension advises |
|---|---|
| Packaging | Moisture-proof, food-grade: Mylar-type bags, polyethylene bags, plastic buckets or #10 cans |
| Temperature | 40-60°F is optimal |
| Moisture | Above 12% encourages mold; above 15%, molds grow |
| Freezing | Freezing or sub-zero temperatures do not damage stored grain |
| Rotation | Rule of thumb: nothing older than 5 years |
How long does it really last?
Much longer than five years in the right conditions. The Extension cites a Brigham Young University study in which wheat stored 32 years in #10 cans still made bread acceptable to most consumers. Keep the rotation rule anyway, because the Extension also notes that gluten degrades in storage and can lose half its raising power after several years.
Do you need oxygen absorbers?
Often not. The Extension says storing wheat without oxygen is not necessary unless insects are present. It recommends absorbers with Mylar bags or #10 cans mainly to deal with insects.
What about fresh-milled flour?
This is a different story. Milling exposes the oils in the germ, and whole grain flour does not keep like berries do. King Arthur's flour guide advises an airtight container in a cool, dark place, and the freezer for long-term storage.
We did not find a reputable storage time specific to fresh-milled flour, so we will not give you an invented number. The practical answer is the reason people mill at home: mill what you need, shortly before you bake. If you have extra, freeze it.