How Long Do Porch Pumpkins Last? (And How to Make Them Last Longer)
If you put pumpkins out in early October, you want them looking good on Halloween and, if you are lucky, through Thanksgiving. The good news is that a whole pumpkin can last two to three months in the right conditions. A carved one is a different story, usually about a week. Here is what makes the difference and what you can do about it.
Start with a good pumpkin
A pumpkin's lifespan starts before it ever reaches your porch. Look for one with a firm, dry stem that is still attached, and a shell with no soft spots, cuts or dark patches. Press gently around the bottom, since that is where rot usually starts. And never carry a pumpkin by its stem. If the stem snaps, you have opened a door for moisture and mold.
Keep them dry
Moisture is the biggest enemy of a porch pumpkin. Pumpkins sitting in rain or in a puddle on a step will soften from the bottom up. If you can, set them under a porch roof or overhang. When they have to sit out in the weather, put them on a piece of cardboard, a mat or a slatted board so water can drain away from them. This also helps protect your steps, since a pumpkin that starts to rot can stain concrete and wood.
Give them a clean start
A quick wipe before they go out can buy you extra weeks. Mix about 1 1/2 teaspoons of bleach into a gallon of water, wipe down each pumpkin, and let it dry completely before you set it out. This kills the mold spores and bacteria sitting on the skin. Plain white vinegar works too if you would rather not use bleach. Just use one or the other, and never mix bleach and vinegar together.
Watch the weather
Here in southwest Ohio, October can swing from warm afternoons to a hard frost in the same week. Warm, humid days speed up rot, and a freeze is just as hard on them. Once a pumpkin freezes and thaws, it turns soft quickly. On nights when the forecast drops below freezing, cover your display with an old sheet or blanket, or move the smaller pumpkins inside the garage overnight.
Check them once a week
Take a minute each week to walk your display and press on the bottom of each pumpkin. If one has gone soft or started to leak, pull it right away. Rot spreads to whatever it is touching, so one bad pumpkin left in place can take its neighbors down with it.
If you have carved yours
Carving exposes the inside of the pumpkin to air, so it will dry out and shrink much faster. A few things help:
Wait to carve until the week of Halloween if you want it looking its best on the big night.
Scrape the inside walls clean, since leftover pulp is where mold starts.
Rub a thin layer of petroleum jelly on the cut edges to slow drying.
Keep it out of direct sun, and use a battery candle instead of a real flame, since heat cooks the pumpkin from the inside.
If it starts to shrivel, soak it face down in a tub of cold water for a few hours to help it firm back up.
Questions about your pumpkins?
If you have a pumpkin question we did not cover here, we would be glad to help. Call or text us at (513) 409-0005, or send a message through our contact page. We are a family-run business right here in the Springboro, Dayton and Cincinnati area, and we are always happy to talk pumpkins.