If you live in a region with cold winters and want to keep your tropical hibiscus plants alive, overwintering them indoors is the key. While hardy hibiscus can survive freezing temperatures, tropical varieties will not. Luckily, with a little preparation, you can protect your plant from frost and enjoy its vibrant blooms again next year. Here’s how to overwinter hibiscus indoors successfully.
When to Bring Hibiscus Inside
Start preparing your hibiscus for overwintering when nighttime temperatures begin to dip below 50°F (10°C). Waiting too long can shock the plant or allow cold damage to occur.
Step-by-Step: How to Overwinter Hibiscus Indoors
1. Inspect and Clean the Plant
- Check for pests like aphids, whiteflies, or spider mites.
- Rinse leaves with a gentle spray or wipe with insecticidal soap if needed.
- Remove any dead or damaged leaves and spent flowers.
2. Prune Lightly
- Light pruning helps reduce stress and saves space indoors.
- Cut back leggy growth and shape the plant, but avoid heavy pruning until late winter or early spring.
3. Choose the Right Indoor Location
- Place hibiscus near a bright window where it will receive 6–8 hours of light daily.
- If natural light is low, use a grow light to supplement during short winter days.
- Keep the plant away from drafts, heat vents, and sudden temperature changes.
4. Adjust Watering
- Hibiscus enters a semi-dormant state indoors and needs less water.
- Allow the top inch of soil to dry before watering again.
- Avoid overwatering, which can lead to root rot in cooler, dimmer conditions.
5. Skip Fertilizer in Winter
- Do not fertilize during winter dormancy, as the plant is not actively growing.
- Resume feeding in spring once new growth appears.
6. Expect Leaf Drop
It’s common for hibiscus to drop some or all of its leaves after being moved indoors—this is a natural adjustment. As long as the stems remain firm and green, the plant is still healthy.
When to Bring Hibiscus Back Outside
Wait until all danger of frost has passed and nighttime temperatures consistently stay above 50°F (10°C). Gradually reintroduce the plant to outdoor light by placing it in a shaded area for a few days, then slowly increasing sun exposure.
Overwintering hibiscus indoors may take a bit of effort, but it’s well worth it to protect these tropical beauties from the cold. With the right care and conditions, your hibiscus will survive winter and burst back into bloom when the warm weather returns.
➡️ Don’t let winter win—bring your hibiscus indoors and keep the tropical vibes alive all year long!
