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JENNY FROM THE PLOT | OCTOBER 22, 2026
Bringing Fruit Trees Indoors for Winter: How to Save Your Citrus, Figs, Olives & Bananas
Because growing season doesn't have to end when the temperature drops.
The temperatures are dropping, the garden is winding down, and suddenly all those beautiful container plants that enjoyed the sunshine all summer need somewhere to spend the winter.
And let's be clear. When you love growing things, finding room for just one more plant is practically a seasonal tradition!
Here in Michigan's Zone 6B, growing tropical and subtropical fruit trees means getting creative. We certainly aren't harvesting lemons and bananas from trees planted out in the backyard year-round.
But growing them in containers? That's an entirely different story.
My own collection includes Key lime, Eureka lemon, variegated pink lemon, blood orange, Arbequina olive, Dwarf Cavendish banana, and Chicago Hardy fig.
And while they can all enjoy outdoor growing conditions during the warmer months, they don't all need the same treatment when winter arrives.
That's one of the biggest mistakes gardeners can make: treating every potted fruit tree like an ordinary houseplant.
Some need bright light and steady warmth. Others are better off resting in a cool location. And nearly all of them require a little pest inspection before coming into the house.
So whether you have one little lemon tree or an entire collection of container fruit trees, let's get them ready for the colder months ahead.
ðŧ The First Rule of Overwintering
Don't decide when to bring a plant inside based on the calendar alone. Watch your local nighttime temperatures and understand what each plant can tolerate. By October 22, tender citrus and bananas should already be protected in many northern locations.
When Should You Bring Potted Fruit Trees Indoors?
For tender tropical plants, it's better to act before cold damage occurs than to wait until the first frost has already arrived.
Iowa State University Extension recommends moving container citrus indoors when nighttime temperatures drop below about 50°F. University of Maryland Extension gives similar guidance for many tropical plants.
That doesn't mean every fruit tree needs to come inside at exactly 50 degrees.
Figs, for example, are deciduous and naturally go dormant as the season changes. Allowing them to experience cooler autumn temperatures can be part of their normal winter preparation.
Olives also have different requirements from tropical citrus, but a container-grown olive still needs protection from damaging winter freezes.
The important thing is to know which category your plant belongs to.
Quick Reference: What Goes Where?
| Plant | Winter Location | Winter Behavior |
|---|---|---|
| Lemon, Lime & Orange | Bright indoor room or sunroom | Evergreen; continues living and may grow slowly |
| Arbequina Olive | Bright, cool, frost-protected space | Evergreen; growth generally slows |
| Dwarf Cavendish Banana | Bright, warm indoor location; dormant storage is another option | Can remain leafy or be overwintered in a resting state |
| Chicago Hardy Fig | Cool protected garage or basement once dormant | Deciduous; naturally loses leaves |
These are general guidelines for container-grown plants. Exact protection needs depend on plant maturity, cultivar, local weather, and the temperatures inside your storage area.
Step 1: Inspect Every Plant Before Bringing It Inside
This might be the most important step of the entire process.
Outdoor plants can collect some very unwelcome hitchhikers during the summer.
And once those pests get into your warm home, where their natural predators are less common, a small problem can turn into a much bigger one.
Before bringing your plants inside, carefully inspect:
- The undersides of leaves
- Where leaves meet the stems
- New growth and tender shoots
- The trunk and branch joints
- The surface of the potting soil
- The outside and underside of the container
Watch for spider mites, scale insects, aphids, whiteflies, mealybugs, and fungus gnats.
Common Pests and What They Look Like
| Pest | Signs to Watch For |
|---|---|
| Spider Mites | Tiny speckles on leaves, fine webbing, faded foliage |
| Scale | Small raised bumps on stems or leaves, sticky residue |
| Mealybugs | White cottony clusters around stems and leaf joints |
| Whiteflies | Tiny white insects flying when foliage is disturbed |
| Fungus Gnats | Small dark flies hovering around moist potting soil |
A gentle rinse with water can remove dust and some insects. If you find an infestation, identify the pest and use an appropriate treatment labeled for that plant.
Insecticidal soap and horticultural oil can be useful for certain pests, but not every product is appropriate for every plant.
If your tree produces edible fruit, make sure any pesticide is specifically labeled for that crop and use. Always follow the label instructions, including temperature precautions and harvest restrictions.
It's also wise to isolate returning plants from your established indoor collection for several weeks while monitoring for hidden pests.
Step 2: Make the Transition Gradual
Imagine spending your entire summer outside in bright sunshine and fresh air, then suddenly being moved into a much dimmer room.
That's essentially what happens to your container plants.
Even a sunny window provides different growing conditions than the outdoors.
Whenever weather allows, begin transitioning plants over approximately one to two weeks by moving them into a more shaded outdoor location before bringing them inside.
This helps reduce the shock of suddenly losing so much natural light.
But here's an important exception: never leave a tender plant outside in dangerous cold just to complete an acclimation schedule.
If temperatures are already dropping too low, bring the plant inside and concentrate on providing suitable light and stable conditions.
Some leaf drop may still occur. That doesn't necessarily mean the plant is dying.
Step 3: Give Your Citrus Trees the Light They Need
This is where lemons, limes, and oranges can get a little demanding.
Citrus trees are evergreen, meaning they keep their leaves and continue needing light throughout winter.
University Extension guidance generally recommends a bright south- or west-facing window with approximately six to eight hours of direct sunlight when possible.
Here in Michigan, however, winter days are short, and sunlight through a window may not be enough to support strong growth.
That's where supplemental grow lights can make a big difference.
A Simple Indoor Citrus Setup
☀️ Light: Use your brightest window and supplement with a suitable grow light if needed.
ðĄ️ Temperature: Aim for a stable indoor environment, avoiding freezing windows and blasts from heating vents.
ð§ Water: Check soil moisture before watering. Keep roots from becoming either bone-dry or waterlogged.
ðŋ Humidity: Consider a room humidifier if heated indoor air becomes excessively dry.
ðŠī Drainage: Always use containers with drainage holes and empty standing water from saucers.
For supplemental lighting, follow your particular grow light manufacturer's recommended distance and photoperiod. The right settings depend on the fixture's intensity, plant size, and natural light available.
And remember, plants need a dark period, too. Leaving grow lights on around the clock isn't the answer.
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Step 4: Don't Water Your Indoor Trees Like It's July
One of the biggest adjustments when moving plants indoors is watering.
Outside during summer, a container fruit tree may need frequent watering because of sunshine, wind, heat, and active growth.
Indoors during winter, those conditions change.
Plants often grow more slowly, and their water needs may decrease significantly.
That means sticking to your summertime watering schedule can lead to soggy soil and root problems.
Instead of watering automatically every few days, check the soil.
For many container citrus plants, feeling the upper inch or two of potting mix is a useful starting point. If the soil is still moist, wait and check again. If it is drying, water thoroughly and allow excess water to drain.
The goal is consistent, appropriate moisture, not constantly wet soil.
And don't forget to check the drainage saucer! Roots shouldn't sit in standing water.
Step 5: Your Fig Tree Has a Completely Different Winter Plan
Now let's talk about the Chicago Hardy fig.
Unlike citrus, a fig tree naturally loses its leaves and enters dormancy during the colder months.
And that's a good thing!
A dormant fig doesn't need the same warm, brightly lit living space as an actively growing lemon tree.
In fact, a cool protected location is usually preferable.
According to Penn State Extension, container figs can be overwintered in an insulated, unheated garage, cool basement, or similar protected location after entering dormancy.
How to Overwinter a Container Fig
1. Allow natural dormancy.
Let shortening days and cool fall weather encourage the leaves to yellow and drop, while protecting the pot from damaging freezes.
2. Move it to a protected location.
Choose a cool area where the root system won't be exposed to extreme freezing temperatures.
3. Reduce watering dramatically.
Check the soil periodically and provide only enough water to prevent the roots from drying completely.
4. Skip fertilizer during dormancy.
You don't want to encourage active growth while the tree should be resting.
5. Monitor the storage temperature.
A garage can become much colder than expected during a Michigan cold snap. Use a thermometer and provide additional protection if necessary.
ðģ Don't Panic About Bare Branches!
A dormant fig tree without leaves isn't necessarily dead. Losing its leaves is a normal part of its seasonal cycle. What matters is keeping its roots alive and protected until spring.
A container-grown Chicago Hardy fig also isn't automatically as cold-hardy as the same variety growing in the ground. Exposed roots in a pot can experience much colder temperatures than insulated roots underground.
Step 6: Give Your Olive Tree Its Own Winter Space
Olive trees are another interesting addition to a container fruit collection.
They aren't tropical plants in the same sense as bananas, but they also aren't suited to spending a Michigan winter outdoors in an exposed pot.
An Arbequina olive generally benefits from a bright, cool, frost-protected location during winter.
Unlike a dormant fig, an olive is evergreen and should not be placed in a completely dark storage area for months.
Choose a location with as much natural light as practical, or use supplemental lighting if needed.
Keep the soil well-drained, reduce watering as growth slows, and avoid letting the pot sit in water.
Olive trees may benefit from cool winter conditions for flowering, but their chilling needs and cold tolerance depend on the cultivar and growing environment.
The safest approach for a container-grown olive in a cold climate is to protect the roots from freezing while maintaining good light and airflow.
Step 8: What About Banana Plants?
Banana plants add such a fun tropical look to the garden, but not all banana varieties have the same cold tolerance or overwintering requirements!
My banana is a Dwarf Cavendish, a tender, tropical, fruit-producing variety that certainly isn't built for a Michigan winter.
For my particular variety, the preferred approach is to bring it indoors before damaging cold arrives and maintain it in a warm, bright location throughout winter.
Overwintering My Dwarf Cavendish Banana
Dwarf Cavendish bananas need warmth, adequate light, and appropriate moisture. If you're growing this variety, here are a few important tips:
- Protect it from cold. Bring it indoors before chilling temperatures cause damage.
- Provide plenty of light. Choose a bright location and consider supplemental grow lighting.
- Maintain warmth. Avoid cold drafts and unheated storage areas.
- Adjust watering. Check soil moisture regularly and avoid waterlogged conditions.
- Watch for pests. Spider mites can become a problem indoors.
- Expect some adjustment. Older leaves may yellow as the plant adapts to indoor conditions.
If you're hoping to eventually harvest bananas, preserving the plant's healthy pseudostem and continued development is especially important. Significant dieback may delay future fruit production.
Can Other Banana Varieties Be Overwintered Dormant?
Yes! Some banana plants can be overwintered in dormant or semi-dormant conditions, depending on the species and growing environment.
For certain varieties, this may involve removing foliage, reducing watering, and storing the plant in a protected location until spring.
For example, Japanese fiber banana (Musa basjoo) is considerably more cold-hardy than Dwarf Cavendish. Established plants may survive winter outdoors in suitable climates with appropriate protection, even if their foliage dies back.
However, this does not mean every banana variety can be stored in a dark garage or left outdoors through winter.
Different varieties have different requirements, and methods that work for one banana may damage another.
ðŧ Jenny's Tip: Know Your Banana Variety!
Before deciding how to overwinter your banana plant, identify the exact variety you're growing. My Dwarf Cavendish is best maintained indoors with warmth and adequate light, but another gardener's banana may have completely different winter requirements. Always research the recommendations for your specific variety!
And one final reminder: even when a banana plant survives winter successfully, producing edible fruit in a northern home can be challenging. Banana plants require a long period of favorable growing conditions, adequate warmth, and strong light to reach fruiting maturity.
Why Are My Plants Dropping Leaves After Coming Indoors?
This is a question that can make even experienced gardeners nervous.
You bring in a beautiful tree, give it a nice sunny spot, and suddenly there are leaves all over the floor.
What happened?
Sometimes, it's simply the plant adjusting to a different environment.
But leaf drop can also signal inadequate light, excessive watering, dry air, temperature stress, or pests.
| What You Notice | Possible Explanation | What to Check |
|---|---|---|
| Leaves dropping soon after moving | Environmental adjustment | Light, temperature, soil moisture |
| Yellowing leaves and wet soil | Possible overwatering | Drainage and watering frequency |
| Dry leaf edges | Dry air or water stress | Humidity and root moisture |
| Tiny spots and webbing | Possible spider mites | Undersides of leaves |
| Fig loses leaves in autumn | Normal dormancy | Season and overall branch health |
The key is not to respond to every dropped leaf with more water or fertilizer.
Take a moment to identify what's actually happening first.
Should You Fertilize Container Fruit Trees During Winter?
Generally, winter is not the time to push heavy new growth.
Many container plants slow down considerably because of shorter days and reduced light.
For dormant figs, skip fertilizing until active growth resumes.
For citrus and olives, fertilizer needs depend on the amount of light, active growth, and the particular plant's requirements. Avoid heavy feeding when growth has slowed.
Bananas maintained under strong indoor light may continue growing, but they still need appropriate care rather than automatic summer-strength feeding.
When in doubt, follow research-based recommendations for the species and the directions on your fertilizer product.
Your October Indoor Plant Checklist
If you're getting ready to move your container collection inside, here's a simple checklist you can work through this week.
ð Before the Cold Settles In
☐ Check the upcoming nighttime forecast.
☐ Move tender citrus and bananas into protection before damaging cold.
☐ Inspect leaves, stems, and containers for pests.
☐ Clean foliage and treat identified pests appropriately.
☐ Isolate returning plants from established indoor plants.
☐ Arrange bright windows or supplemental grow lights.
☐ Confirm containers have working drainage holes.
☐ Adjust watering to indoor conditions.
☐ Plan a cool, protected location for dormant figs.
☐ Find a bright, frost-protected location for olives.
☐ Set a weekly reminder to check soil, foliage, and pests.
Don't Forget About Spring!
It's easy to focus so much on getting plants indoors that we forget they'll eventually need to transition back outside.
And just as plants need time to adjust to lower indoor light in fall, they need time to adjust to stronger outdoor sunlight in spring.
Don't take a citrus tree that's been growing in a window all winter and immediately place it in full afternoon sun.
Instead, begin with a protected, shaded outdoor location and gradually increase sun exposure over a week or two.
Wait until nighttime temperatures are suitable for each species before leaving tender plants outdoors permanently.
For citrus, Iowa State University Extension recommends waiting until nighttime temperatures are in the 50s°F before moving plants outside for the growing season.
A little patience in spring can prevent sunscald, temperature injury, and unnecessary stress.
Growing Doesn't Have to Stop When Summer Ends
One of my favorite things about container gardening is that it lets us grow plants we might never otherwise be able to enjoy here in Michigan.
Lemons, limes, oranges, olives, bananas, and figs certainly aren't what most people picture when they think about a northern garden.
But with a little planning and the right winter care, these plants can become part of our gardens year after year.
And that's a pretty wonderful feeling.
So as you're bringing your own plants inside this fall, remember that the goal isn't to make every tree grow vigorously all winter long.
Sometimes success means healthy green leaves under a grow light.
And sometimes success means a completely bare fig tree resting quietly in the garage until spring.
Both are signs that you're working with the plant's natural growing cycle instead of against it.
ðŧ What's Coming Inside at Your Plot?
Do you have citrus trees, figs, bananas, olives, or other plants you're trying to overwinter? I'd love to hear what you're growing and how you're making room for everything!
Whether you're gardening outdoors, growing herbs on a windowsill, or turning a corner of your home into a winter greenhouse, there's always something new to learn here at the Plot.
Let's grow together! ðŧ
Homegrown. Homemade. Welcome home.
Research-Based Gardening Resources
The recommendations in this article are informed by university Cooperative Extension resources. Growing conditions and cultivar requirements vary, so consult your local Extension office for region-specific guidance.
Iowa State University Extension: Growing Citrus Indoors
University of Maryland Extension: Growing Dwarf Citrus
University of Maryland Extension: Overwintering Tropical Plants
Penn State Extension: Winterizing Your Fig Tree
University of Minnesota Extension: Bringing Houseplants in for Winter
Penn State Extension: Before the First Frost