Turn a hollowed pumpkin into a planter: step by step

4 min reading time

A hollowed pumpkin makes a good planter for a few weeks, as long as you line it and use plants that barely need water. Succulents and small cacti are the right choice, and when the pumpkin goes soft the whole arrangement lifts out and moves into a pot or a terrarium.

The end of a carved pumpkin is usually the green bin. It does not have to be. A pumpkin that is still firm makes a perfectly good container for a few weeks, and it looks a great deal better on a table than another plastic pot. The catch is water: pumpkins rot from the inside out, so the whole trick is choosing plants that hardly need any.

What you need

A hollowed pumpkin, ideally one with the opening cut in the top for this job
A plastic bag, a plastic pot or a saucer to line the inside
A little potting soil, or cactus soil if you have it
Three to five small plants: succulents or small cacti are the safest choice
Moss, gravel or small pine cones to cover the soil
Optional: a few mini pumpkins around the base to tie it together

Step by step

1. Hollow it out and dry it. If the pumpkin is not already empty, cut the opening in the top for this version, scoop out the seeds and strings and scrape the wall back to roughly two centimetres. Then dry the inside completely with kitchen paper. A wet pumpkin with soil in it turns to mush in under a week.

2. Line the inside. This is the step that decides how long the arrangement lasts. Push a plastic bag into the cavity and fold the edges over the rim, or simply sit a plastic pot or a deep saucer inside. The soil should never touch the pumpkin flesh directly.

3. Add a drainage layer. A centimetre of gravel or clay pebbles in the bottom gives any excess water somewhere to sit that is not against the roots. There is no hole in the bottom, so this layer is doing the work a drainage hole would normally do.

4. Add soil and set the plants. Fill with a few centimetres of soil, then place the biggest plant slightly off centre and work the smaller ones around it. Leave the leaves just above the rim so the pumpkin frames the arrangement instead of hiding it. Press the soil down lightly.

5. Cover the soil. Moss, gravel or a scatter of small pine cones over the surface makes the difference between a project and a finished object. It also slows evaporation.

6. Water almost nothing. A tablespoon or two of water at the base of each plant is plenty, and then leave it alone for a week or more. Succulents in a container with no drainage hole are far more likely to die of too much water than too little.

Which plants work, and which do not

Succulents and small cacti are the right answer. They store their own water, they are happy in shallow soil and they do not mind being moved around. Small houseplants with tough leaves work too, and so do heather and small autumn bedding plants if the pumpkin is standing outside.

What does not work: anything that likes constant moisture. Ferns, calathea and moss-loving plants need the soil damp, and damp soil against pumpkin flesh means rot within days. Those plants belong in a closed glass terrarium, not in a vegetable.

How long it lasts

Indoors, on a table, expect two to three weeks before the pumpkin starts to soften. Outside in cool autumn weather you can get four to six weeks, sometimes the whole of November. It lasts longer if you keep it out of direct sun, keep the outside dry and check the base every few days for soft patches.

The same rules as a carved pumpkin apply. Cool is better than warm, dry is better than damp, and a thin layer of oil on the cut rim keeps the edge from curling. Our guide on keeping a pumpkin from rotting has the rest.

What to do when the pumpkin goes

This is the whole point of lining it. When the pumpkin gets soft, lift the liner out with the plants and soil still in place and move the arrangement straight into a pot, a bowl or an open glass terrarium. Nothing has rooted into the pumpkin, so nothing is damaged.

If you like the look of plants arranged in glass rather than in a vegetable, that is exactly what a DIY terrarium kit is: the same twenty minutes of arranging, in a container that does not have a use by date. The pumpkin version is the seasonal one.

The empty pumpkin goes in the compost, minus any glitter or paint. Then wash the liner, because you will want it again next October.

Doing it with children

This is a good project to hand over almost entirely. Cutting is a job for an adult, but the scooping, the soil, the plants and the moss are all things a child of five or older can do without any help. It takes twenty minutes, it makes very little mess if you work on a tray, and it ends with something they made that stays alive.

The full pumpkin process, from picking one in the shop to composting it, is in our pumpkin guide.

FAQ

When does autumn start?

There are two answers, and both are correct. Meteorological autumn always runs from 1 September to 30 November, which is what weather forecasters use. Astronomical autumn begins at the September equinox, which in 2026 falls on 23 September.

When do the clocks go back in 2026?

On Sunday 25 October, when the clocks go back an hour and the evenings suddenly get dark much earlier. It's the point in the year when most people notice the change in light indoors, and it's a good moment to move plants closer to a window.

Why do leaves change colour in autumn?

As days shorten, trees stop producing chlorophyll, the green pigment that powers photosynthesis. The yellows and oranges were in the leaf all along and simply become visible once the green fades. Reds are made fresh in autumn, which is why some years are more colourful than others depending on the weather.

When is Halloween 2026?

Saturday 31 October. Most people decorate in the last week of October, and pumpkins are best carved two or three days before, since a carved pumpkin doesn't last long.

How long does a carved pumpkin last?

Usually between five days and two weeks, depending on how warm it's kept. Drying the inside thoroughly after carving, keeping the pumpkin outside in the cold and using a battery light rather than a candle all make a noticeable difference.

Should I carve a pumpkin from the top or the bottom?

The bottom. It keeps the stalk intact, hides the join, and lets you set the pumpkin down over a light instead of reaching in through a lid. It also drains better, which helps it last longer.

What can I do with a pumpkin after Halloween?

If it's still firm, use it as a temporary planter. Line the inside, add a little soil and sit succulents or small cacti in it, since they need so little water that the pumpkin stays firm for weeks. Once it softens, compost it and move the plants into a pot.

Why are my houseplants struggling in autumn?

Almost always because of light, not care. Shorter days mean slower growth, so plants use far less water and any fertiliser just sits in the soil. From late September, water around half as often, stop feeding until March, and move plants closer to the window.

When should I bring outdoor plants inside?

Before the first frost, and earlier for anything tender. As a rule of thumb, bring tender plants in once night temperatures start dropping towards ten degrees. Check the leaves and undersides for pests before they come indoors, since a warm house lets an infestation spread quickly.

How do I make my home feel autumnal without filling it with decorations?

Work with texture rather than seasonal colour: glass, wood, moss, dried stems and linen in a narrow range of greens and browns. Choose one focal point where you actually look, and add a warm side lamp for the evenings. Three well-placed things read better than fifteen scattered ones.