Overwintering pepper plants
Fall Is Coming
By Debra Austin
Published October 11, 2026
The short version
Bring pepper plants indoors once nights drop below 55°F. Give them a south-facing window or 12 to 16 hours a day under a grow light, water only when the top inch of soil is dry, and check every leaf for pests before they come through the door. Peppers are perennials, so a plant that makes it through winter keeps going. Plenty don't, so expect to lose some.
It's getting colder here just outside San Antonio. I can tell because my cat is pretending to like me.
For a pepper grower, that means the outdoor season is winding down and a decision is coming. You can let the plant go with the first freeze, or you can bring it inside for the winter. Here's how to do the second one, and what it really costs you.
Our own outdoor peppers? We mostly leave them running ragged and see what happens, if only to feed the birds migrating south for the winter. We also have a blight of rabbits.
The plants we sell are a different story. This time of year we grow indoors, our own chili peppers included, because when do you need spicy food more than the cold months? We still have plants for sale right now that suit growing indoors, including the gothic, Halloween-themed ones like Halloween Thai, Black Pearl, Vampire and Dark Blood.
Your pepper plant is a perennial
Here's the thing most people miss: peppers are perennials. Plant in May, dead by November isn't the plant's biology. It's what happens when a perennial meets a freeze. Bring it in before that freeze and it keeps going.
Keeping it going is the hard part.
When to bring pepper plants inside
Don't wait for a frost forecast. Growth slows hard below 60°F, and below 50°F you're protecting the plant, not growing it. Once nights drop under 55°F, the plant gains nothing by staying outside. Bring it in.
Check it at the door
Aphids, spider mites and whiteflies all ride indoors on the leaves. Look the plant over before it crosses the threshold. Knock pests off with a spray of water, and treat with neem oil or insecticidal soap if you find anything. A pest problem on the patio is an annoyance. The same problem next to your houseplants is a project.
Light decides whether it lives
A south-facing window with 6 or more hours of direct sun can carry a pepper through winter. No window like that? Use a grow light for 12 to 16 hours a day. A full-spectrum LED panel does the job.
Peppers are day-neutral, so the season itself doesn't matter to them. Hours of light do. Give the plant enough and it has no idea it's January. Turn it once a week so it grows evenly instead of leaning into the glass.
Water less than you think
Overwatering kills more indoor peppers than anything else. Push a finger an inch into the soil. Dry? Water it. Damp? Leave it alone. A pot with no drainage holes will rot the roots.
Most houses already sit in the 65 to 85°F range peppers want. Keep the plant back from drafty windows, and don't panic when a few older leaves near the bottom yellow and drop as new growth comes in.
The risks of overwintering peppers
Now the odds. In our experience it's well above 50% loss year to year. The plant doesn't die of one thing. It dies of whichever of these gets to it first:
If you want peppers in January
Under enough light, a pepper keeps flowering through winter. There are no bees in your living room, though, so pollination is your job. Give the plant a gentle shake every few days while flowers are open, or move pollen between flowers with a small paintbrush. A small fan pointed at the plant does the same work. If it's flowering and fruiting under a light, keep feeding it every couple of weeks.
Spring: ease it back out
Harden an overwintered plant off the way you would a new arrival. An hour or two of morning sun for the first couple of days, then build up to full days over about a week. If the forecast shows a night below about 50°F, bring it back in.
Where our plants spend the winter
We grow every plant we sell indoors, under light, in our grow rooms: 16 hours of light at 75 to 85°F. That's why we sell and ship plants all year, winter included. If your overwintered plant doesn't make it, our mature plants ship in winter too.
For the full winter care routine, read How to Overwinter Pepper Plants. For a complete indoor setup, see our indoor growing guide, or browse the live plants for sale.
Overwintering pepper plants FAQ
About the author
co-owns Austin Peppers, an online nursery just outside San Antonio that grows every pepper plant it sells indoors, in grow rooms under light, and ships them live all year.
When should I bring my pepper plants inside?
Once nights drop below 55°F. Growth slows hard below 60°F, and below 50°F the plant is only surviving.
Can pepper plants survive winter indoors?
Yes. Peppers are perennials, and with a south window or 12 to 16 hours of artificial light they keep growing. Many do not make it, though. In our experience it is well above 50% loss year to year.
How much light does an overwintered pepper need?
Six or more hours of direct sun in a south-facing window, or 12 to 16 hours under an artificial light.
What kills overwintered pepper plants?
Overwatering kills more indoor peppers than anything else. Pests carried in from outside, low light, cold drafts and a rushed move back outside in spring also take plants.
Should I fertilize a pepper plant over winter?
Only if it is flowering and fruiting under a light. Then feed it every couple of weeks.
Can I buy live pepper plants in fall and winter?
Yes. Austin Peppers grows every plant it sells indoors, under light, so it sells and ships live pepper plants all year, winter included.