Many gardeners treat peppers like Capsicum annuum as annuals, but in their native tropical climates, they are woody perennials. By bringing your container-grown chiles indoors before the first autumn frost drops temperatures below 45°F, you can skip the seed-starting phase next year and get a massive harvest jump-start.
Assess and Prepare
Before the weather turns, inspect your plants for pests like aphids or spider mites. If you bring a infested plant into your home, those pests will thrive in the dry indoor air. Rinse the foliage thoroughly with a gentle stream of water or use an insecticidal soap. Focus on the undersides of the leaves where eggs often hide.
The Pruning Process
To keep your plants manageable, you must perform hard pruning.
- Cut back the main branches to leave just 6 to 10 inches of stem remaining.
- Remove all remaining leaves and any yellowing branches.
- Ensure there are still a few healthy nodes on the stems, as these are where new spring growth will emerge.
Keep your overwintering pepper plants in a cool, bright location like an unheated sunroom or a garage with a window, aiming for a temperature range of 50°F to 60°F to keep them in a state of semi-dormancy.
Managing Winter Dormancy
Once pruned, your peppers need very little attention. Reduce your watering schedule significantly. The plant is not actively producing fruit or foliage, so the soil should remain barely moist—never soggy. Overwatering during this dormant phase is the leading cause of root rot. If the soil is too wet, the plant may succumb to fungal issues before spring arrives.
Spring Reawakening
As natural light increases in late winter and the days lengthen, move your plants to a warmer location. Begin increasing water slowly and introduce a light, water-soluble fertilizer once you see new green buds emerging. After all danger of frost has passed in your specific USDA zone, harden off the plants over seven days before placing them back into the garden for the new season.
Your plants will likely grow back more vigorous and fruit-heavy than they were in their first year.