Pecans are rich in oil, so cold storage keeps them fresh longer, but in-shell pecans do fine in a cool pantry. Below: where each form belongs, how long it lasts there, and which source each figure comes from.
Do pecans need to be refrigerated?
The short answer: Not always, but cold storage lasts longer. In-shell pecans keep 6 to 12 months in a cool, dry place per the National Pecan Shellers Association. Shelled pecans keep about nine months in the refrigerator and up to two years in the freezer, and about 2 months in a pantry for halves per one grower. Diamond of California recommends refrigerating tree nuts after opening.
For a complete pantry storage reference, see our Food Storage Guide. Planning to bake? Try our pumpkin pecan muffins or maple pecan pie bars.
Do Pecans Need to Be Refrigerated: At a Glance
In-shell
Pantry works: NPSA says 6 to 12 months in a cool, dry place. NMSU says 18 months at 32 to 36°F
Shelled
Fridge or freezer is better. A grower’s table gives only about 2 months in a pantry for halves
Opened bag
Diamond of California’s non-retail products page recommends refrigerating tree nuts after opening
Refrigerator
NPSA: about 9 months in an airtight container such as a jar with a lid
Freezer
NPSA: up to 2 years in sealed bags. K-State says freezer is best, up to 1 year
Temperature
Sources range from 32 to 36°F (NMSU) to about 46°F (Pecan South) to 45 to 55°F (Diamond). For a home fridge, we’d aim for 40°F or below
Odors
Pecans absorb flavors from other foods, so seal them (UGA Extension, K-State)
Key Takeaways
Not always, but cold storage lasts longer. In-shell pecans keep 6 to 12 months in a cool, dry place per the National Pecan Shellers Association (NPSA), so the pantry works for them.
Shelled pecans are the ones to chill. NPSA says about nine months in the refrigerator and up to two years in the freezer. Priester’s, a pecan grower, gives only about 2 months in a pantry for halves.
Diamond of California’s non-retail products page recommends refrigerating its tree nuts after opening, and says keeping tree nuts cold helps prevent off flavors and rancidity.
The freezer is not clearly better for every purpose. K-State says the freezer is best, up to one year. NPSA says thawing and refreezing cause no loss of flavor or texture, while UGA Extension says pecans get drier and more brittle the longer they stay frozen.
Storage temperatures differ by source and setting: 32 to 36°F (New Mexico State University, NMSU), 32 to 34°F (UGA Extension), 32 to 45°F (NCHFP), about 46°F (Pecan South’s industry study) and 45 to 55°F (Diamond). For a home refrigerator, 40°F or below sits within NCHFP’s range.
Seal pecans well. UGA Extension and K-State both say they absorb flavors and odors from other stored foods.
We could not reach USDA’s FoodKeeper data. We found no source on whether the fridge door or a shelf is better for pecans.
Which Pecans Do You Have?
In-shell, shelled, opened and roasted pe
