How and When to Bring Outdoor Plants Indoors for Winter

Bringing outdoor plants indoors for winter is more than simply carrying them inside before the first frost. The move changes light, temperature, humidity, airflow, and watering conditions, and those changes can stress plants that were thriving outdoors.

For many tender tropical and container plants, begin preparing to move indoors when nighttime temperatures approach about 50°F (10°C). This is a useful general starting point rather than a universal cutoff. More cold-sensitive plants may need protection earlier, while genuinely cold-hardy plants may tolerate lower temperatures.

The safest approach is to prepare early, inspect plants for pests, clean them before they enter the home, acclimate them to lower indoor light when practical, and adjust winter care to the plant's actual growth and environmental conditions.

When Should You Bring Outdoor Plants Inside?

For many tender tropical and container plants, start preparing to move them indoors when nighttime temperatures approach about 50°F (10°C). Container plants are particularly exposed because their roots have less insulation than plants growing in the ground.

Do not treat 50°F (10°C) as a universal temperature rule. A plant's known cold tolerance should take priority. Some plants can tolerate cooler conditions, while cold-sensitive tropical plants may need protection sooner.

Also watch the forecast rather than relying only on the calendar. If a sudden cold snap or frost is expected, protecting vulnerable plants is more important than completing a perfect gradual transition.

Houseplants vs. Dormant Tubers

Not every plant that spends summer outdoors should receive the same winter treatment. One of the most important decisions is whether the plant should be brought indoors while retaining foliage or whether it naturally enters dormancy.

Plants that retain foliage indoors

Some plants can be transitioned indoors and managed as indoor plants through winter. Examples in the PlantSolve plant collection include Hibiscus, Lemon Tree, Peace Lily, and Alocasia.

These plants may slow down substantially after moving indoors. They may also experience some leaf drop because indoor light, temperature, humidity, and airflow differ from their outdoor environment.

Lemon Tree deserves particular care because moving it indoors can cause substantial stress and significant leaf drop. Alocasia should also be distinguished from other elephant-ear species rather than being given a generic dormancy treatment.

Plants that naturally enter dormancy

Some plants are better handled according to their natural dormant cycle. Caladium and Colocasia, for example, have species-specific winter strategies.

Do not apply one universal storage temperature, storage medium, or watering schedule to every bulb or corm. When a plant naturally dies back, follow its individual care requirements for winter dormancy.

What to Do Before Bringing Plants Indoors

The preparation you do before moving a plant indoors can prevent many problems later.

Inspect the entire plant for pests

Check the tops and undersides of leaves, stems, leaf joints, soil surface, pot rims, and drainage areas. Look for insects, eggs, webbing, scale-like growth, sticky residue, or other signs of infestation.

Pests that are easy to overlook outdoors can become much more noticeable once a plant is inside and close to other houseplants.

Clean the foliage and container

Before bringing a plant indoors, physically inspect and clean the plant. Remove dead leaves and debris that may harbor pests. Where appropriate, gently rinse the foliage and clean the outside of the container, checking leaf undersides, stems, leaf joints, and drainage areas. Remove visible pests manually where practical. Washing does not guarantee pest elimination, but it is the critical first step in a safe transition: physical cleaning → inspection → treatment if needed → quarantine → monitoring.

Check drainage

Make sure the container's drainage holes are open and that excess water can escape freely. A pot that drains poorly outdoors can become an even greater problem indoors when evaporation is slower.

Do not automatically repot

Repotting is not required simply because a plant is moving indoors. Consider repotting when there is a clear reason, such as severe root restriction, damaged growing medium, or a drainage problem.

Moving a plant and repotting it at the same time can create two major changes at once. If the existing container and growing medium are functioning well, postponing a nonessential repot may reduce unnecessary stress.

Quarantine and treat pest problems

Newly transitioned outdoor plants should be isolated from established houseplants for approximately 2–4 weeks of quarantine and observation. This is a practical risk-reduction measure, not a guarantee that pests are impossible. During this time, actively monitor the leaf surfaces, leaf undersides, stems, leaf joints, soil surface, pot rim, and drainage holes.

Look closely for spider mites on houseplants, scale insects on houseplants, crawling insects, webbing, sticky residue, or stippling discoloration. If pests are found, treat the problem before ending the quarantine.

How to Bring Outdoor Plants Indoors Step by Step

1. Choose the timing. Begin preparing tender and container plants before damaging cold arrives.
2. Inspect for pests. Check leaves, stems, soil, pot rims, and drainage areas carefully.
3. Clean the plant. Rinse suitable foliage and clean the container when appropriate.
4. Remove dead or damaged material. Light cleanup is useful, but avoid unnecessary heavy pruning immediately before the move.
5. Check drainage. Make sure water can leave the container freely.
6. Begin the light transition. When outdoor conditions allow, move plants from intense outdoor exposure toward a more sheltered or shaded position before the final indoor move.
7. Choose the indoor location. Consider the plant's light, temperature, humidity, and airflow requirements.
8. Adjust watering. Do not automatically continue the outdoor watering schedule. Indoor conditions may cause the growing medium to dry at a different rate.
9. Monitor the plant. Watch for leaf drop, pests, overwatering, underwatering, inadequate light, and other signs of stress during the first few weeks indoors.

How to Acclimate Plants to Lower Indoor Light

Light is often the biggest environmental change when an outdoor plant comes inside. A plant growing in direct outdoor sunlight may receive dramatically less usable light through a window.

When weather conditions permit, start the transition before the final indoor move. A practical progression is to move the plant from its normal outdoor position to a brighter-shade or sheltered location and then into its intended indoor position.

For plants that tolerate temporary movement, another option is to increase the amount of time they spend indoors before keeping them inside permanently. The exact pace depends on the plant and the outdoor weather.

Once indoors, place the plant according to its light requirements. A bright window may be appropriate for plants requiring strong light, while other plants may prefer filtered or indirect light. Supplemental lighting can help when natural indoor light is insufficient.

Do not expect every plant to maintain its outdoor growth rate indoors. Reduced winter light can naturally slow growth.

Using Supplemental Grow Lights

Outdoor light can be substantially stronger than typical indoor window light. Moving a plant indoors can therefore cause a major reduction in usable light. While a bright-window placement should be considered first, supplemental grow lighting can help when natural indoor light is insufficient.

Plants with higher light requirements may need more supplemental lighting than shade-tolerant plants. For detailed guidance on providing adequate light, see our guide on how to care for indoor plants without natural sunlight.

How to Prevent Leaf Drop After Moving Plants Indoors

Some leaf drop after an outdoor plant is moved indoors does not necessarily mean the plant is dying. The plant has experienced changes in light, temperature, humidity, airflow, and watering conditions.

The best response is usually to stabilize the environment rather than repeatedly moving the plant from one location to another. Provide suitable light, avoid strong heating or cooling drafts, check the soil before watering, and continue monitoring for pests.

However, do not automatically blame severe decline on acclimation. Root problems, pests, inadequate light, and watering errors can produce similar symptoms. If a plant continues to deteriorate, investigate the underlying cause.

Humidity and the Indoor Environment

Winter heating can make indoor air considerably drier than the outdoor environment many tropical plants experienced during summer.

There is no single humidity percentage that is correct for every plant. Instead, focus on practical environmental stability. Grouping compatible plants, using a humidifier, or choosing a naturally more humid room can help when dry indoor air is contributing to stress.

Keep plants away from strong heating and cooling vents. At the same time, maintain appropriate airflow and avoid keeping foliage or growing media continuously wet.

Should You Prune Plants Before Bringing Them Inside?

Light pruning can be useful for removing dead, damaged, or diseased growth. It can also make a large plant easier to fit into the available indoor space.

However, pruning is not a mandatory winterization step for every plant. Avoid unnecessary heavy pruning immediately before a major environmental change. Follow the plant's normal pruning requirements and prune when there is a clear reason.

What About Large Tropical Plants?

Large outdoor plants can be difficult to accommodate indoors, so it helps to decide which plants you can realistically support before the weather turns cold.

Prioritize healthy plants that are valuable, difficult to replace, or well suited to indoor conditions. Plant stands, shelves, and suitable supplemental lighting can make limited space more useful.

If a plant is already severely stressed or heavily infested, bringing it into a crowded indoor growing area may create additional problems. Assess the plant's condition before deciding where it belongs for winter.

Watering and Fertilizing After Plants Come Inside

Adjust watering to indoor conditions

Do not continue the same watering schedule simply because the plant was watered frequently outdoors. Indoor light, temperature, humidity, airflow, and container conditions can all change how quickly the growing medium dries.

Check the plant and growing medium before watering. Plants growing slowly generally use less water than they did during active outdoor growth, but the correct interval varies by species and environment.

Be cautious with fertilizer

Fertilizer demand often decreases when growth slows. If a plant is barely growing because of reduced winter light, increasing fertilizer is unlikely to solve the underlying problem.

Adjust feeding according to active growth and the plant's normal care requirements rather than applying a universal winter fertilizer rule.

If You Have Limited Indoor Space

You do not have to bring every outdoor container indoors. If space is limited, prioritize plants that are particularly vulnerable to winter conditions, difficult to replace, or well suited to your available indoor environment.

Vertical shelving, plant stands, hanging locations, and supplemental lighting can increase usable space when appropriate. Smaller plants or healthy propagation material may also be easier to accommodate than a very large specimen.

The goal is not to maximize the number of plants indoors. It is to create conditions in which the plants you choose have a realistic chance of making it through winter.

What About Plants That Need Dormancy?

Some plants should not be treated like foliage-retaining houseplants through the entire winter. When a plant naturally enters dormancy, its foliage may die back and its underground storage structure becomes the focus of winter care.

Caladium, for example, has a species-specific dormant winter strategy. Colocasia also has its own requirements. These examples show why there is no single safe storage temperature or storage medium for every tuber or bulb.

When foliage naturally dies back, follow the plant-specific guidance for reducing water, removing dead foliage, storing the underground structure, and maintaining the appropriate winter conditions. Do not assume that a storage procedure that works for one species will work for another.

What to Do During a Sudden Cold Snap

If temperatures are expected to drop sharply before you have completed the normal acclimation process, protect the plant first. A sudden cold event is more important than maintaining a perfect gradual transition.

Move vulnerable container plants into a protected location or indoors as soon as practical. After the immediate cold threat passes, stabilize the plant and resume a gradual transition if conditions allow.

Spring: Moving Plants Back Outdoors

The return outdoors should be gradual too. Indoor-grown foliage is not automatically ready for intense outdoor sunlight, wind, and temperature changes after spending winter inside.

When temperatures are suitable, begin in a sheltered location with less intense light. Increase outdoor exposure progressively before returning the plant to its normal summer position.

This reverse acclimation can reduce the risk of sudden sun and environmental stress.

Related Winter Plant Care

Once your plants are indoors, continue with our winter houseplant care guide for broader winter maintenance.

If a houseplant develops severe wilting, use our wilting houseplants rescue guide to distinguish watering stress from more serious root problems.

For pest problems that appear after the move, see our guides to spider mites on houseplants and scale insects on houseplants.

Frequently Asked Questions

When should I bring outdoor plants inside for winter?

For many tender tropical and container plants, begin preparing to move indoors when nighttime temperatures approach about 50°F (10°C). More cold-sensitive plants may need to come inside earlier, so use the plant's known cold tolerance rather than treating 50°F as a universal cutoff.

How do I prepare outdoor plants before bringing them inside?

Inspect the plant carefully for pests, clean the foliage and container, remove dead or damaged growth, check drainage, and address confirmed pest problems before placing the plant near established houseplants.

Why do plants lose leaves after coming indoors?

Leaf drop can occur because indoor conditions differ sharply from outdoor conditions, especially light, temperature, humidity, airflow, and watering. Some acclimation-related leaf drop can be temporary, but continuing decline should be investigated for pests, root problems, poor light, or watering issues.

Should I repot a plant before bringing it indoors?

Not automatically. Repot when there is a clear reason, such as severe root restriction, damaged growing medium, or drainage problems. Avoid stacking unnecessary repotting stress with the environmental change of moving indoors.

How should I store a plant that goes dormant in winter?

Dormant plants require species-specific care. Some bulbs and tubers need dry, dark, cool, or warmer storage depending on the species. Follow the individual plant's requirements rather than applying one universal dormancy temperature or storage method.

Should I fertilize outdoor plants after bringing them inside?

Fertilizer needs often decrease when indoor light and growth decrease. Avoid heavy feeding when a plant is barely growing, and adjust feeding according to active growth and the plant's normal care requirements.