What to Do With Your Pumpkins After Thanksgiving: A Zero-Waste Guide

Every year, Americans throw out an estimated 1 billion pounds of pumpkins after the autumn season. Almost all of it goes to landfill, where it breaks down without oxygen and releases methane, a greenhouse gas considerably more potent than carbon dioxide.

Which is a strange fate for a vegetable. Your Thanksgiving pumpkin is food, compost, seed and decor, often all at once, and almost none of it needs to end up in a bin.

Here is what to actually do with pumpkins after the season, in order of how much value you get back.

First, Check Which Pumpkin You Have

Everything depends on this, so start here.

Uncut and still firm. This is food. It has been sitting in a cool room, not rotting, and is perfectly edible. Skip to the eating section.

Carved. Once cut, a pumpkin starts decomposing within days. It is no longer safe to eat, but it is excellent compost and excellent wildlife food.

Painted, glittered or glued. This is the problem case. Craft paint, glitter and hot glue mean the pumpkin cannot be eaten, and most municipal composting will not take it either. Worth remembering when you decorate next year.

Decorated with dried flowers. The best case, and the reason this method has taken over autumn decor. Lift the arrangement off, keep the flowers, and the pumpkin underneath is untouched and fully usable.

Option 1: Eat It

An uncut pumpkin that still feels firm is straightforwardly a squash, and nobody would throw out a squash.

Roast the seeds

The easiest win and the one most people already know but skip anyway. Rinse the seeds, dry them properly (this matters more than people think, wet seeds steam instead of crisping), toss with oil and salt, and roast at around 350°F for 12 to 15 minutes until golden.

Beyond salt, they take almost any seasoning well: smoked paprika, cinnamon and sugar, chili and lime, or za'atar.

Cook the flesh

Cut it into wedges, scoop out the stringy interior, and roast at 400°F until tender, roughly 40 minutes. From there:

• Puree it and freeze in portions. It keeps for months and works in pies, breads and pancakes.
• Make soup. Roasted pumpkin, onion, garlic, stock, a little cream. It is difficult to get wrong.
• Cube and roast it with olive oil and sage as a side dish.
• Add it to curry or risotto, where its sweetness works particularly well.

One note on variety: large carving pumpkins are bred for size, not flavor, so they are watery and bland compared to smaller sugar or pie pumpkins. They are still perfectly usable, especially in soup, but season more assertively.

Do not throw out the skin either

Roasted pumpkin skin crisps up well and is entirely edible on most varieties.

Option 2: Feed the Wildlife

A carved or softening pumpkin makes excellent food for birds and animals.

Cut it into large pieces and leave it in the garden. Squirrels, birds and deer will take it. Seeds left in the flesh are a particular draw for birds.

Two rules: make sure there is no candle wax, paint or glitter on it, and leave it away from roads so you are not drawing animals into traffic.

If you keep chickens, they will demolish a pumpkin, seeds included.

Option 3: Compost It

Pumpkin breaks down quickly and is high in nitrogen, which makes it a useful green addition to a compost heap.

Break it into smaller pieces first, since a whole pumpkin takes a long time. Remove any candles, wax, stickers or decorations. Balance it with dry brown material such as leaves or cardboard, because pumpkin is wet and a heap that is too wet will go anaerobic and start to smell.

No compost heap? Many cities run green waste collection that accepts pumpkins, and some areas run seasonal pumpkin composting drop-offs after the holidays. Worth a search for your local option.

A small bonus: if you bury a piece of pumpkin with seeds in it, you may well get a pumpkin vine next spring. Plenty of gardeners have grown a whole crop this way entirely by accident.

Option 4: Save the Decorations

This is where decorating choices from six weeks earlier pay off or cost you.

Dried flower arrangements are fully reusable. Lift the arrangement off the pumpkin in one piece if you can. Preserved blooms, grasses and seed pods keep their structure for years if they are stored properly.

To store them: keep them somewhere dry, dark and not humid, loosely boxed rather than compressed. Direct sunlight is what fades dried flowers fastest, so a cupboard beats a shelf.

Next year, the same flowers go onto a new pumpkin, and the year after that. Individual stems will eventually become too fragile, but the bulk of an arrangement survives several seasons.

Repurpose them instead. Dried flowers from an autumn arrangement do not have to go back on a pumpkin at all. They work in a winter wreath, a vase through December, a table garland, or preserved permanently in a glass shadow box or under a glass cloche, where they become year-round decor rather than seasonal.

Painted and glittered pumpkins, by contrast, are a dead end. The decoration cannot be removed, the pumpkin cannot be eaten or composted, and the whole thing goes in the bin. This is the strongest practical argument for the dried flower approach: at the end of the season you are left with reusable materials and an intact, edible or compostable vegetable.

Planning Ahead for Next Year

A few decisions in October determine whether you end up with waste in December.

• Do not carve what you want to eat. Decorate uncut pumpkins and keep one or two intact specifically for cooking.
• Choose decoration that lifts off. Dried flowers, ribbon and fabric all come away cleanly. Paint and glitter do not.
• Buy a sugar pumpkin alongside the display one. Small, cheap, and far better eating.
• Consider a faux pumpkin base for the centerpiece. Then the display piece is reused indefinitely and the real pumpkins are all food.
• Keep them cool and dry. A pumpkin stored somewhere cool stays edible for weeks longer than one sitting by a radiator or in direct sun.

The Decorating Method That Leaves Nothing to Throw Away

If you want an autumn centerpiece that ends the season as reusable flowers plus an intact pumpkin rather than as landfill, dried floral decorating is the approach, and it is easier to learn in an afternoon than to work out from scratch.

New to this? Our step-by-step guide covers how to make a pumpkin floral centerpiece, including which pumpkin to choose and which flowers hold up all season.

Frequently Asked Questions

Can you eat a pumpkin that has been used as decoration?

Yes, if it was never cut open and still feels firm with no soft spots or mold. A carved pumpkin starts decomposing within days and should be composted rather than eaten. Painted or glittered pumpkins should not be eaten at all.

How long does an uncut pumpkin stay good?

Stored somewhere cool and dry, an uncut pumpkin typically keeps for two to three months. Kept warm or in direct sunlight, that drops considerably.

Can you compost a painted pumpkin?

Generally no. Craft paint, glitter and glue are not compostable and most municipal green waste programs will not accept a decorated pumpkin. Decorating with materials that lift off, such as dried flowers, avoids the problem entirely.

Why is throwing pumpkins in the bin a problem?

In landfill, organic matter breaks down without oxygen and releases methane, a greenhouse gas significantly more potent than carbon dioxide. Composting the same pumpkin avoids that and returns nutrients to soil instead.

Can you reuse dried flowers from an autumn arrangement?

Yes. Preserved blooms, grasses and seed pods keep their structure for years if stored somewhere dry, dark and uncompressed. They can go on a new pumpkin next autumn, into a winter wreath or vase, or be preserved permanently in a glass shadow box or cloche.

Are carving pumpkins good to eat?

They are edible but bred for size rather than flavor, so they are watery and mild. Smaller sugar or pie pumpkins taste considerably better. Large carving pumpkins still work well in soup with assertive seasoning.

Lumé Petals is a creative garden studio in Irvine, California running workshops in floral design, glass painting and block printing. Browse all workshops or explore DIY home kits.