How to Prepare Citrus Trees for Winter Indoors
- How to Prepare Citrus Trees for Winter Indoors
- Watering is Key
- Moving Citrus Gradually
- Choosing the Right Indoor Spot
- Managing Heat and Humidity
- Feeding and Repotting
- Watch for Insects and Yellowing
As temperatures begin to cool and the days grow shorter, all Citrus grown in cold climates need to be prepared to come indoors for the winter. This transition should be gradual to avoid shocking the plant with a sudden climate change.
Watering is Key
The most important consideration when transitioning Citrus indoors is watering. As daylight shortens, your plant’s growth slows, meaning it needs far less water than in spring or summer.
- Check soil moisture by pressing your finger into the soil up to the second knuckle.
- Only water when the soil feels dry at that depth.
- Try the Finger Test to monitor soil moisture accurately.
Since each home’s humidity and light levels differ, get familiar with how your Citrus reacts to watering. Remember, consistent overwatering leads to root problems and fungus gnats.
Moving Citrus Gradually
To help your Citrus adjust smoothly, move it gradually from its outdoor location to a spot closer to your house where it will receive some warmth and shelter.
- Porches or sunny spots near heated walls are ideal transition areas.
- Keep your Citrus outdoors until nighttime temperatures dip into the mid- to high-30s°F.
- The longer your plant stays outside above 35°F, the stronger it will be indoors.
Choosing the Right Indoor Spot
Once it’s time to bring your Citrus inside, place it in a location with ample sunlight exposure. A large south or southwest-facing window usually works best. If natural light isn’t enough, you may need supplemental lighting.
- Avoid full-spectrum lights that encourage leafy growth.
- Instead, use LED lights for flowering and fruit ripening to support natural seasonal rhythms.
Managing Heat and Humidity
Once indoors, avoid placing your Citrus tree near heat sources like vents, heaters, or wood stoves. Dry indoor air can quickly stress the plant.
- Use a small humidifier nearby in very dry rooms.
- Grouping plants together also helps retain humidity naturally.
Feeding and Repotting
Feed your Citrus before bringing it indoors to help it handle the change. Use an organic, acid-based fertilizer such as the one described in our Citrus Fertilization Guide.
- Feed again about 30 days before moving it back outdoors.
- If needed, transplant your Citrus into a 16-inch pot for a #3 size plant when first received.
- Do not repot during winter; this often causes plant loss.
- Wait until late winter or early spring to repot safely.
Watch for Insects and Yellowing
Regular inspection is key once your Citrus moves indoors. Common issues like mites and scale are easy to manage if caught early.
- Small black bugs in soil indicate fungus gnats from overwatering.
- Yellowing leaves and mild discoloration are common during transition, so stay consistent with watering and lighting.
If you notice yellowing or leaf drop, learn how to diagnose and correct it in our Citrus Leaf Yellowing and Leaf Drop Guide.
If your plant is brought in already showing stress, it may not fully recover until next spring. Focus on keeping it healthy and stable through winter, and new growth will follow once it’s back outside.
With proper care, your Citrus tree will stay green, fragrant, and full of life all winter, ready to burst back into growth when spring returns!
Happy Planting!
