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I Tried 3 Viral Hacks to Keep Pumpkins from Rotting—and This One Actually Worked

After putting in all the effort that goes into hollowing out and carving jack-o-lanterns, no one wants to see their carved pumpkins spoil before Halloween. But, pumpkins only last for about 3 to 5 days after carving (and spoil even faster in warm weather). With Halloween just around the corner, I...

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After putting in all the effort that goes into hollowing out and carving jack-o-lanterns, no one wants to see their carved pumpkins spoil before Halloween. But, pumpkins only last for about 3 to 5 days after carving (and spoil even faster in warm weather).

With Halloween just around the corner, I wanted to find out how to keep pumpkins from rotting, so I took to the internet and tracked down three viral hacks that allegedly keep pumpkins fresh longer.

I gave the hacks a test run on my own pumpkins and here are the results.

The Test
I started my test in early October when the temperatures were around 60 degrees F during the day. I purchased 4 pumpkins that were similar in size, color, and texture to keep the test as consistent as possible. I even carved (or tried to) the same face onto each picture-perfect pumpkin.

I did keep one pumpkin as a control to get a clear idea of how long pumpkins last in the conditions around my home. Below is the lineup of hacks that I tried:

Diluted bleach spray: I sprayed one pumpkin daily, inside and out, with a diluted bleach spray made with 1 part bleach to 9 parts water.
Hair spray: I sprayed one pumpkin, inside and out, with hair spray and applied this treatment only once after carving the pumpkin.
Coconut oil: I rubbed coconut oil, inside and out, on one pumpkin and applied this treatment one time, right after carving. It's also biodegradable and compostable.
Day 1

I cleaned the exterior of all the pumpkins with diluted bleach, carved them, applied the treatments to the test pumpkins, and set the pumpkins outside without candles. All three treatments were easy to apply, although the coconut oil was slightly messy.

By evening, the control pumpkin and the pumpkin sprayed with bleach looked a little dry around their carved edges, but the other two pumpkins still looked fresh.

Day 3
The weather remained warm and sunny through day 3 and, by the third day, that warmth was starting to take its toll on the control pumpkin and the pumpkin treated with bleach.

These two pumpkins had already developed small patches of dark mold on their interiors, although their carved edges still looked mold-free and fresh enough for display.

There was no visible mold on the hairspray and coconut oil pumpkins, but the skin near the carved sections of the hairspray pumpkin had darkened.

Day 5
The difference in the pumpkins was undeniable by day 5. The weather was still pleasant and warm and all 4 pumpkins had at least some mold growing on their interiors; however, the coconut oil pumpkin had significantly less mold than the other three pumpkins and its carving still looked fresh.

The hairspray pumpkin had a fair amount of mold on its interior but was still displayable. The control and bleach pumpkins, however, had mold growing along their carved eyes and mouths and did not look fresh.

Days 6 through 10
Most pumpkin lovers would have disposed of the control and bleach pumpkins by day 5 or 6 due to visible mold, but I kept the experiment going a little longer.

By day 10, all four pumpkins had dark mold on their interiors and carved sections, but the coconut oil pumpkin had much less mold than the other pumpkins. The carved edges of the coconut oil pumpkin also looked fresher and displayed less wrinkling and warping.

Final Verdict
Honorable mention: the hairspray treatment, which did appear to repel mold better than the bleach treatment.

The clear winner: coconut oil. While the coconut oil treatment was messier to apply, it kept the pumpkin’s carved edges from drying out, significantly inhibited mold growth by at least 3 days compared to the control, and kept the pumpkin in displayable shape for at least 10 days.

Considering the results of this experiment, I plan to wipe the pumpkins I carve for trick-or-treat night down with coconut oil after I carve them. But I’m also going to carve those pumpkins when the weather is cooler to help them stay fresh even longer.

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