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Vegetable Gardening Hints, December 2025
December 01, 2025
Hello,

“How to Store Vegetables So They Last All Winter”


December is when all the sneaky problems in storage really start to show — potatoes sprouting, onions getting soft, squash molding, and carrots going rubbery. The good news? Most of these issues are preventable with a few simple tweaks.

Here’s your December guide to keeping your harvest crisp, flavorful, and fresh all winter long.

🥔 1. Potatoes: Stop Sprouting and Softening

Ideal conditions:

   •   Temperature: 4–7°C (40–45°F)

   •   Humidity: High

   •   Light: As dark as possible

Tips:  •   Store in a cardboard box or breathable paper bag — never plastic.

   •   Keep them far away from onions (they make each other spoil faster!).

   •   Check weekly and remove any that feel soft.

Bonus: Add a few sheets of newspaper to absorb excess moisture.

🧅 2. Onions & Garlic: Keep Them Firm and Mold-Free

Ideal conditions:

   •   Temperature: 0–4°C (32–40°F)

   •   Humidity: Low

   •   Ventilation: Excellent

Tips:

   •   Use mesh bags, old onion sacks, or hang in pantyhose “chains.”

   •   Avoid storing in sealed containers.

   •   Keep them away from potatoes and apples.

If you see one soft onion, remove it immediately — it will spread quickly.

🥕 3. Carrots and Beets: How to Keep Them Crisp

Root crops last longest when stored like they’re still in the ground.

Ideal conditions:

   •   Temperature: 0–1°C (32–34°F)    •   Humidity: Very high

Storage method:

   •   Trim greens (they pull moisture from the roots).

   •   Store in a bin filled with damp sand, peat moss, or sawdust.

   •   Keep in a cold garage, mudroom, or fridge drawer.

If they get rubbery → soak in cold water for 2 hours to rehydrate.

🎃 4. Winter Squash: Prevent Mold and Rot

Ideal conditions:

   •   Temperature: 10–15°C (50–60°F)

   •   Humidity: Low

   •   Airflow: Good

Tips:

   •   Cure for 10–14 days before storing (if not already cured).

   •   Store on a single layer — never stacked.

   •   Wipe with a 10% vinegar solution to slow mold.

Butternut stores longest (up to 6 months), while acorn and spaghetti squash store the shortest (6–8 weeks). I grated my summer squash and put it in the freezer for soups and veggie patties.

🥬 5. Cabbage: The Surprising Winter Champion

Cabbage can last 3–4 months with the right method.

How to store:

   •   Leave the outer leaves on — they protect the head.

   •   Wrap in paper towel and place in the crisper drawer.

   •   Or hang whole heads by the stalk in a cool basement.

Remove outer leaves as they wilt; the inside stays perfect.

🧺 6. A Simple Step Most People Forget: Airflow!

Stuffy storage = mold and rot.

Use:

   •   Plastic totes with holes drilled in

   •   Mesh bags

   •   Slatted boxes

   •   Crate shelving

And always leave a bit of space between bins.

❄️ 7. What to Do With Veggies That Won’t Last

If something is starting to turn, here’s how to save it:

   •   Soft onions: chop + freeze

   •   Sprouting potatoes: cook and freeze mashed

   •   Carrots getting soft: make soup packs for the freezer

   •   Squash with spots: roast and freeze the purée

   •   Beets: boil, peel, freeze in cubes

Nothing goes to waste.

📌 December Checklist for Your Stored Vegetables

Here’s your quick routine:

✔ Check every 1–2 weeks

✔ Remove anything soft or moldy

✔ Keep onions and potatoes apart

✔ Rotate bins so oldest gets used first

✔ Add/remove moisture as needed

✔ Make notes for next year’s harvest

Print this and keep it in your storage area — it’s a lifesaver.


Happy Holidays to all my readers!

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Catherine
your-vegetable-gardening-helper

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