How to Make Your Jack-O'-Lantern Last Longer This Halloween

Horticulture experts say the clock starts ticking the moment the first cut is made. From picking the right pumpkin to keeping it cool, a few simple steps can help your creation hold up through Halloween.

Spooky season is officially here, which means jack-o'-lanterns are about to pop up everywhere.

Carving eerie faces and intricate designs into the bright orange gourds can be a fun activity for everyone involved, and who doesn't love having passersby admire their handiwork?

The worst thing that can happen is watching your jack-o'-lantern go bad soon after your hard work goes on display. Luckily, there are ways to help it last longer. Pumpkins themselves are remarkably resilient; an uncarved pumpkin can last for weeks on end.

Steve Reiners, a horticulturist at Cornell University, says it depends on the condition of the pumpkin and the weather, but generally, they hold up for quite a long time. "If the pumpkin was healthy when picked and diseases were controlled in the field, the pumpkin can last 8 to 12 weeks," he said.

However, he added that jack-o'-lanterns don't fare nearly as well, usually lasting just five to 10 days. The truth is, no matter what you do, your pumpkin will likely start turning mushy after about a week.

With some luck, it may hang on for a few extra days, up to two weeks in total, but after that, it will rot or collapse. That's simply the nature of things; your pumpkin masterpiece will have to be thrown away sooner or later.

Carving a pumpkin exposes its insides, making it more susceptible to infection through airflow. Environmental factors such as temperature and sunlight can also affect the pumpkin's condition.

Molds are fungal microorganisms that can thrive almost anywhere. These fungi release tiny, lightweight spores that travel through the air. Once they land, they can infect carved pumpkins, causing them to shrivel, soften and sprout fuzzy, gray mold.

Still, it is possible to delay the inevitable. Here are some useful tips.

Choose a Firm Pumpkin

This is the first and most important step. Inspect the pumpkin carefully, and if it feels even slightly soft, skip it because it won't last. Instead, go for one that feels sturdy, and keep it as dry as possible.

Kansas State University horticulture expert Cynthia Domenghini recommends harvesting or buying fully ripened pumpkins to boost their longevity. "Pumpkins that are harvested before they fully ripen will rot more quickly than those harvested at peak maturity," Domenghini said.

She added that a mature pumpkin will have a hard rind that is solid in color and should make a hollow sound when thumped. Mature pumpkins also have a waxy coating, which protects them from drying out.

Mind the Temperature Before and After Carving

Temperature matters both before and after carving, and the ideal range is from the upper 50s to the lower 60s Fahrenheit (about 14 to 17 degrees Celsius). Be especially careful to protect it from freezing temperatures; if it freezes and then thaws, it will rot.

Pumpkins also perish faster with a lit candle inside, so you might want to skip real flames if you want your jack-o'-lantern to have a longer shelf life. Instead, try a flickering lightbulb, LEDs or a glow stick.

Hold Off on Carving Until the Last Minute

The earlier you carve your pumpkin, the faster it will begin to spoil. If you need it for a specific occasion, hold off until the day itself rather than carving it days in advance.

Before you start, give your pumpkin a thorough wash and sterilize your spoons, knives and other carving tools, especially when moving from one pumpkin to the next.

Fight Off Mold Once the Carving Is Done

This helps stave off fungal growth, one of the main causes of decay. You can also spritz it with lemon juice, even once a day, to slow deterioration, as both help kill microorganisms on the surface of your pumpkin.

Additionally, rub petroleum jelly on the cut areas to help lock in moisture and slow the drying process.

While no trick can keep a jack-o'-lantern fresh forever, these simple steps can buy your creation a few extra days in the spotlight.

With the right pumpkin, a little patience and some care after carving, your spooky masterpiece can greet trick-or-treaters for as long as possible this Halloween.