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Writer's pictureHannah O'Connor

Winter Care for Your Houseplants: Tips for Bringing Them Indoors

As winter approaches, gardeners must prepare their houseplants for the transition indoors. Central Texas winters, though mild, can bring sudden frosts and freezes that threaten the survival of plants, especially those in containers. Unlike ground-planted flora, container plants are more vulnerable to cold temperatures because their roots lack the insulation provided by the earth. This makes it essential to bring your houseplants inside before nighttime temperatures drop below 40°F.


 

Preparing to Move Plants Indoors

Woman Watering Indoor Plants

1. Inspect for Pests and Diseases

Before moving any plants indoors, thoroughly inspect them for signs of pests and diseases.


Common offenders include:

  • Aphids: Tiny, soft-bodied insects that cluster on stems and leaf undersides.

  • Spider Mites: Minute pests that cause fine webbing on leaves and suck plant juices, leaving stippled or yellowed foliage.

  • Scale Insects: Immobile pests with a hard or waxy coating that adhere to stems and leaf joints.


Check leaves (both sides), stems, and even the soil surface for these pests. If you find any:

  • Manual Removal: Wipe off pests with a damp cloth or use a soft brush for stubborn cases.

  • Organic Treatments: Apply neem oil or insecticidal soap, such as the “Bonide Neem Max” (8-oz, $21.00), to eliminate infestations while remaining eco-friendly.

  • Quarantine Plants: If pests are present, isolate the plant for a few days and monitor to ensure treatment is effective before introducing it to your indoor space.


2. Clean the Plants

Dust and dirt can accumulate on leaves outdoors, reducing their ability to photosynthesize efficiently.


Clean plants before bringing them inside:

  • Leaf Cleaning: Gently wash leaves with lukewarm water or wipe them with a soft, damp cloth to remove dust and hidden insects.

  • Soil Surface: Use tools like the “Corona Comfort Cultivator” ($15.00) to gently stir and clean the top layer of soil. This aerates the soil while dislodging pests that may be hiding in the upper layer.

  • Pot Cleaning: Wipe down the outside of the pot to remove debris, which can harbor insects or fungal spores.


A clean plant not only looks healthier but also reduces the risk of pests or diseases spreading indoors.


3. Adjust for Lighting Changes

Indoor Plants on Sunny Windowsill

Plants accustomed to full sunlight outdoors may struggle with the lower light levels indoors.


Make this transition easier by:

  • Placing Strategically: Choose a spot near a bright, south-facing window for plants that need high light intensity, like succulents and citrus trees. For shade-tolerant plants, east- or north-facing windows may suffice.

  • Supplementing Light: Invest in grow lights to mimic natural sunlight for plants with higher light demands. LED grow lights are energy-efficient and effective.

  • Gradual Acclimation: Transition plants slowly by first placing them in partially shaded outdoor areas before moving them indoors. This helps reduce light shock.


Keep an eye on plants for signs of inadequate lighting, such as yellowing leaves, elongated stems (stretching), or reduced growth. Adjust their placement or lighting accordingly to ensure they stay healthy indoors.


 

Creating an Ideal Indoor Environment


Once your plants are safely indoors, maintaining the right environment is crucial to ensure their health and growth through the winter months. Indoor conditions often differ significantly from the outdoor environment, especially in terms of light, humidity, and temperature. Adapting your care routine is key.


1. Choose the Right Location

The placement of houseplants is critical to their success indoors:

Indoor Monstera Plant

  • Adequate Natural Light: Position plants near windows that provide bright, indirect light. South-facing windows are ideal for light-loving plants like succulents, while east- or west-facing windows suit plants requiring moderate light, such as pothos or philodendrons.

  • Avoid Problem Areas:

    • Drafts: Keep plants away from drafty windows or doors, as sudden cold air can stress them.

    • Heating Vents: Hot, dry air from vents can dry out foliage and soil, especially for tropical plants.

  • Humidity-Loving Plants: For plants like ferns, calatheas, and prayer plants that thrive in higher humidity:

    • Place them near a humidity tray—a shallow dish filled with water and pebbles where evaporation creates localized moisture.

    • Mist them lightly with water once or twice daily to mimic their natural environment.


2. Manage Humidity and Temperature

Woman Potting Indoor Plant

Indoor heating systems in Central Texas can create excessively dry conditions, which can be challenging for houseplants:


  • Increase Humidity: Combat dry air using these methods:

    • Humidity Tray: Add a layer of water to a pebble-filled tray placed under the plant pot. As the water evaporates, it raises humidity around the plant.

    • Regular Misting: Use a fine mist spray on humidity-dependent plants like ferns and calatheas. Be cautious not to overdo it, as stagnant moisture can encourage fungal issues.

    • Humidifiers: For homes with very dry air, a small room humidifier can benefit both plants and people.


  • Temperature Stability: Most houseplants thrive at temperatures between 60–70°F. Avoid exposing plants to:

    • Drafts: Cold air near doors and windows can shock sensitive plants.

    • Extreme Heat: Avoid placing plants too close to radiators or heating vents. Fluctuations in temperature can disrupt growth.


Maintaining consistent temperature and humidity levels is especially vital for tropical species that are sensitive to environmental changes.


3. Adjust Soil and Watering Practices

Indoor conditions often mean slower soil drying times compared to outdoor environments.


Woman Watering Indoor Plants

Adjust watering habits and soil choices accordingly:

  • Check Before Watering: Overwatering is a common issue indoors. Always check the top inch of soil; if it’s dry, water the plant, but if it’s moist, wait a few more days.

  • Choose the Right Soil:

    • Use a well-draining potting mix, such as “Fox Farm Ocean Forest” (12 qt, $17.00). It contains a mix of nutrients and drainage components to prevent waterlogging.

    • For succulents or cacti, use a cactus-specific mix like “Nature’s Creation Cactus and Succulent Soil” (0.5 cu ft, $14.99).

  • Reduce Fertilizing: Most houseplants require little to no fertilizing during the winter since their growth slows. Over-fertilizing can lead to salt buildup and root damage.


Adjusting watering frequency and using appropriate soil ensures plants remain healthy and free from issues like root rot during their indoor stay.


 

Conclusion

By preparing your houseplants for winter, you ensure they not only survive but thrive indoors, beautifying your space and improving air quality. A few simple adjustments can keep your plants healthy until spring returns. Visit Round Rock Garden Center for organic soils, pest control solutions, and tools to make winter care easy and effective!


Happy Gardening!



 

Sources:


  1. “Frosts and Freezes”

    1. Author: Travis County Extension

    2. https://travis-tx.tamu.edu/about-2/horticulture/plant-problems-and-maintenance/frosts-and-freezes/

  2. "The 10 Best Houseplants for Purifying Indoor Air”

    1. Author: Robin Sweetser (Farmer’s Almanac)

    2. https://www.almanac.com/10-indoor-plants-clean-air

  3. "Timely Tips on Starting Seedlings at Home”

    1. Authors: E. E. Janne and Dr. R. E. Roberts, Texas A&M University

    2. https://aggie-horticulture.tamu.edu/earthkind/

  4. “December Gardening Checklist for Austin and Central Texas”

    1. Author: Travis County Extension

    2. https://travis-tx.tamu.edu/about-2/horticulture/monthly-gardening-calendar-for-austin-area/december-gardening-checklist-for-austin-and-central-texas/

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