How to End the Season Depends on Whether You Want to Save the Plant or Clear the Space
At the end of the growing season, you have three main paths: pull the plant and compost it, dig it up and bring it indoors to keep growing through winter, or leave it in the ground to die back naturally and reseed itself next year. Which one makes sense depends on your climate, whether you have indoor space, and how much work you want to do. In most of the country, tomato plants are killed by the first frost, so you'll be removing them anyway—the question is when and how.
The timing matters. Tomato plants stop producing fruit when nighttime temperatures drop below 55°F, and they die when frost arrives. Frost dates vary widely by region—check your local frost date before you decide to wait it out. If you live where frost comes in October, you have a different situation than someone in a warm zone where tomatoes keep growing into November.
Key Takeaways
- Pull and compost healthy plants after the first frost or when production stops; diseased plants should go in the trash, not the compost pile.
- Bring plants indoors before frost if you want to keep them alive through winter, but they will produce less fruit and need a sunny window or grow light.
- Leave plants in the ground to die back naturally only if you don't mind self-seeded volunteers next spring and you have space for them.
- Unripe tomatoes picked before frost will ripen indoors on a windowsill or in a paper bag with a ripe banana or apple.
- Clean up fallen leaves and debris to reduce disease carryover; don't leave diseased plant material on the soil surface.
Pulling and Composting at the End of Frost
The simplest approach is to pull the plant once frost kills it or production stops. Cut the plant at soil level with pruning shears or a knife, then pull out the roots. Healthy plants with no disease can go into a hot compost pile—one that reaches 140°F or higher will kill any pathogens. If your compost pile doesn't get that hot, or if the plant had disease (yellowing leaves, spots, wilting), throw it in the trash instead. Diseased material left in compost can spread problems to next year's garden.
After you remove the plant, clear away any fallen leaves or fruit from the soil surface. Tomato leaves and fruit left on the ground can harbor disease spores that survive winter and infect next year's plants. Rake the area clean, then you can either leave the soil bare or plant a cover crop like clover or rye to protect the soil through winter and add organic matter when you turn it under in spring.
Bringing Plants Indoors to Keep Them Alive
If you have a sunny window or grow light and want to extend the season, you can dig up the plant before the first frost and move it to a pot indoors. Choose a pot at least 5 gallons, fill it with potting soil, and dig the tomato plant carefully so you keep as much of the root ball as possible. Water it well after transplanting and let it settle for a few days before moving it to its indoor location.
Indoors, the plant needs at least 6 to 8 hours of direct sunlight daily—a south-facing window works, or a grow light positioned 6 to 12 inches above the plant. Temperatures between 65°F and 75°F are ideal. Water when the top inch of soil feels dry. The plant will keep producing, but slower than outdoors, because indoor light is weaker and the air is drier. You may see fewer flowers and more dropped fruit. Pinch off new flowers that appear after mid-winter, since fruit that sets then won't have time to ripen before spring.
Letting Plants Die Back and Self-Seed
In warm climates where frost doesn't arrive until late, or if you're willing to cover plants with frost cloth when cold threatens, you can leave tomato plants in the ground to die naturally. Once they're dead, the plant breaks down and adds organic matter to the soil. If you let the last ripe fruit stay on the plant, seeds will scatter when the fruit rots, and you'll get volunteer tomato plants next spring.
This approach works only if you have space for volunteers and don't mind them popping up in unexpected places. Volunteers are usually the same variety as the parent plant, but if you grew multiple types nearby, they may be crosses. If you prefer to control where your tomatoes grow, pull the plant before it dies back completely, or remove any fruit that falls to the ground.
Harvesting Unripe Tomatoes Before Frost
If frost is coming and you have green tomatoes still on the vine, pick them before the freeze. Tomatoes picked at the "breaker stage"—when they show the first blush of color—will ripen indoors. Pick any that are fully green too; they'll ripen more slowly but will eventually turn red.
Spread the tomatoes on a windowsill in a single layer, or place them in a paper bag or cardboard box. A ripe banana or apple in the bag speeds ripening because it releases ethylene gas. Keep them at room temperature, around 68°F to 75°F. Check them every few days and remove any that show soft spots or mold. Ripening takes 1 to 3 weeks depending on how mature the fruit was when picked and how warm the room is.
Cleaning Up Disease and Preventing Next Year's Problems
Tomato diseases like early blight, late blight, and septoria leaf spot survive on plant debris and in the soil. If your plants showed spots, yellowing, or wilting during the season, remove all plant material—leaves, stems, fruit, and roots—and throw it in the trash. Don't leave it on the soil surface or add it to compost unless you're certain your compost reaches 140°F.
After you remove the plants, rake up fallen leaves and fruit. Wash your hands and any tools you used, especially if you handled diseased plants. If you used stakes or cages, wash those too with a 10% bleach solution (1 part bleach to 9 parts water) to kill spores. These steps take a few minutes but cut the risk of disease returning next season.
Preparing the Soil for Next Year
Once the plants are gone, you can improve the soil for next year. If you have compost or aged manure, spread 2 to 3 inches over the bed and work it in. Tomatoes are heavy feeders and benefit from added organic matter. If you want to test your soil, fall is a good time—results come back before spring planting, and you can add amendments over winter.
If disease was a problem this year, consider rotating your tomato bed to a different location next season. Tomatoes, peppers, eggplants, and potatoes are all in the same family and share many diseases, so avoid planting any of them in the same spot for at least two years. If you only have one bed, remove the top 6 inches of soil and replace it with fresh compost, or plant a non-related crop there next year.
Frequently Asked Questions
Can I compost tomato plants that had disease?
No, not unless your compost pile reaches 140°F or higher. Diseased plants should go in the trash. If you're unsure whether your pile gets that hot, throw them away to be safe. Compost that doesn't get hot enough will spread disease to next year's garden.
How long do green tomatoes take to ripen indoors?
Tomatoes at the breaker stage (showing first color) ripen in 1 to 3 weeks at room temperature. Fully green tomatoes take longer, sometimes 4 to 6 weeks. Keeping them at 68°F to 75°F speeds the process. A ripe banana or apple in the bag releases ethylene gas and cuts ripening time by several days.
Will volunteer tomatoes from self-seeded fruit be the same variety?
Usually yes, if you grew only one variety. If you grew multiple types close together, volunteers may be crosses of the parent plants. If you want to control the varieties in your garden, remove fruit before it falls and rots on the ground.
Do I need to remove the roots when I pull the plant?
Yes, dig out as much of the root system as you can, especially if the plant had disease. Roots left in the soil can harbor pathogens and regrow. For healthy plants, leaving small root pieces won't cause problems, but removing them is cleaner and reduces disease risk.
What's the best time to pull tomato plants?
Pull them after the first frost kills the plant, or when nighttime temperatures stay below 55°F and production stops. If disease is present, pull earlier to prevent it from spreading. In warm climates, you can wait until you're ready to plant something else in that space.