Tips and Tricks for Pumpkins
1. Clean the inside.
Since they're moist, any bit of exposed pumpkin guts will start to go moldy very quickly. Pumpkin Patches and More suggests cleaning the surface of the veggie and the interior with a teaspoon of bleach per one quart of water. (Putting it in a spray bottle makes it easier to apply the solution to the whole pumpkin.) This will sterilize the gourd, killing any existing bacteria. Let it dry fully before you start carving.
2. Give it a bleach-water bath after you carve it.
The bleach comes into play again post-carving, giving it an good cleansing. Submerge your creation in a bucket filled with water and 2/3 cup of bleach. Leave the pumpkin there to soak for up to 24 hours.
3. Apply petroleum jelly.
As an extra layer of protection, apply Vaseline on the carved edges. This will keep them moisturized and prevent the edges from drying out too fast. If you don't have Vaseline, vegetable oil or WD-40 works too. But since all three are flammable, don't put a candle inside your pumpkin — use a flameless votive instead. Don't put on the jelly before you clean the pumpkin with bleach, either. Since the jelly is trapping the moisture in the vegetable, it will trap the bacteria along with it if you don't clean the gourd first.
4. Rehydrate the pumpkin daily.
Pumpkins shrivel up because they run out of moisture. Spraying it every day with water mixed with a few drops of bleach will keep it moist and ward off bacteria. As an even easier solution, spray it with Pumpkin Fresh daily to fight off mold.
5. Store it in the fridge overnight.
When you're not showing off your Jack-o'-Lantern on your porch, put it in a plastic bag in your refrigerator. No room? Keep it in the basement (or any other cool, dark area of your house).
6. Give it an ice bath.
If you see your pumpkin starting to wilt, give it an ice bath overnight for some serious rehydration. Once you take it out, dry it thoroughly to prevent mold growth.
7. Don't use real candles to light it.
8. Display it in a stable temperature.
Avoid leaving your pumpkin outside during freezing temperatures. Ideally, you want to place it somewhere with a temperature in the upper 10s to lower 15s Celsuis. So if you're in an area where freezing weather is likely during October, be sure to bring your pumpkins inside each night.