neon pothos

Why Your Indoor Plants Are Struggling In November & December

As the days grow shorter and temperatures drop, many indoor plant enthusiasts notice their green companions starting to show signs of stress. November and December bring unique challenges that can hinder the health and vibrancy of your indoor garden. But fear not! Understanding the reasons behind your plants’ struggles is the first step toward nurturing them back to their thriving selves. Let’s delve into the common issues affecting indoor plants during these chilly months and discover how to overcome them with the enthusiasm of a passionate gardener!

Reduced Light Availability

golden pothos
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Winter days are shorter, and the angle of the sun changes, resulting in less natural light reaching your indoor plants. Many houseplants rely on ample sunlight to perform photosynthesis, the process that fuels their growth and blooming. With diminished light, plants may exhibit slower growth, yellowing leaves, or even start to droop.

How to Fix It: Maximize the available natural light by placing your plants near south or west-facing windows where they can receive the most sunlight. If natural light is insufficient, consider investing in grow lights to supplement their light needs. LED grow lights are energy-efficient and can provide the full spectrum of light that plants require. Additionally, rotating your plants regularly ensures that all sides receive equal light exposure, promoting balanced growth.

Lower Humidity Levels

watering plants
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Indoor heating systems can significantly reduce humidity levels in your home during the winter, creating a dry environment that many tropical and moisture-loving plants find inhospitable. Dry air can lead to browning leaf tips, curling leaves, and overall stress for your plants.

How to Fix It: Increase humidity around your plants by using a humidifier in the rooms where your plants reside. Alternatively, place water-filled trays or bowls near your heating sources to add moisture to the air. Grouping plants together can also create a microenvironment with higher humidity as they release moisture through transpiration. Misting your plants regularly, especially those that thrive in humid conditions, can provide temporary relief and help maintain healthy foliage.

Overwatering or Underwatering

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The changing seasons can disrupt your regular watering routine. With plants growing more slowly in the winter, their water needs decrease. Overwatering can lead to root rot and fungal issues, while underwatering can cause plants to dry out and weaken.

How to Fix It: Adjust your watering schedule based on your plants’ reduced growth rates. Check the top inch of soil before watering; if it feels dry, it’s time to water. Ensure that your pots have proper drainage to prevent excess water from accumulating and causing root problems. Using self-watering pots or trays can help maintain consistent moisture levels without the risk of overwatering. Additionally, be mindful of the type of plants you have, as succulents and cacti require less water compared to tropical varieties.

Temperature Fluctuations

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Indoor environments can experience temperature fluctuations during the winter months, especially with heating systems running. Cold drafts from windows and doors or placing plants too close to heating vents can cause stress and damage to your plants.

How to Fix It: Maintain a stable temperature in the rooms where your plants are located, ideally between 65-75°F (18-24°C) during the day and slightly cooler at night. Keep plants away from direct heat sources, such as radiators and fireplaces, and avoid placing them near drafty windows or doors. Using draft stoppers and insulating windows can help create a more consistent temperature environment, reducing the risk of temperature-induced stress on your plants.

Pests and Diseases

scale pest
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Winter’s dry air and reduced light can weaken your plants, making them more susceptible to pests like spider mites, aphids, and mealybugs. Additionally, poor air circulation can lead to fungal diseases, further compromising your plants’ health.

How to Fix It: Regularly inspect your plants for signs of pests, such as webbing, sticky residue, or discolored leaves. Treat infestations promptly with natural remedies like neem oil, insecticidal soap, or introducing beneficial insects like ladybugs. Ensure proper air circulation by spacing your plants adequately and using fans if necessary. Avoid overhead watering to prevent excess moisture that can promote fungal growth, and consider using a fungicide if you notice signs of disease.

Lack of Fertilization

rabbit manure
Rabbit Manure | Credit: Wikimedia Commons

During the winter, most indoor plants enter a period of dormancy or slowed growth, leading many gardeners to reduce or stop fertilizing altogether. However, some plants still benefit from occasional feeding to maintain their health and prepare for the upcoming growing season.

How to Fix It: Continue to fertilize your plants, but reduce the frequency and amount of fertilizer used. Opt for a balanced, water-soluble fertilizer diluted to half the recommended strength and apply it once a month. Choose fertilizers specifically formulated for indoor plants to ensure they receive the right nutrients without causing a buildup in the soil. This gentle feeding supports your plants’ overall health and prepares them for vigorous growth when spring arrives.

Soil Compaction

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With less frequent watering and slower growth, soil in potted plants can become compacted, restricting root growth and reducing oxygen availability. Compacted soil can lead to poor drainage and root suffocation, negatively impacting plant health.

How to Fix It: Gently loosen the top layer of soil around your plants using a fork or your fingers to improve aeration. Repotting your plants with fresh, well-draining soil can also help alleviate compaction issues. Choose a potting mix appropriate for your specific plant types, ensuring it provides adequate drainage and aeration. Repotting every two to three years helps maintain healthy soil structure and supports robust root systems.

Neglected Pruning

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During the winter months, plants may lose leaves or go dormant, leading to a temptation to neglect pruning altogether. However, regular pruning is essential for removing dead or diseased branches, promoting air circulation, and encouraging healthy growth in the spring.

How to Fix It: Prune your plants carefully, removing any dead, yellowing, or damaged leaves and branches. Use clean, sharp pruning shears to make precise cuts, minimizing stress on the plant. For flowering plants, pruning after the blooming period ensures that you don’t accidentally remove buds set for next season. Maintaining a tidy and well-pruned plant not only enhances its appearance but also supports overall health and vitality.

Dust Accumulation

Monstera Deliciosa
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Indoor heating can stir up dust, which settles on your plants’ leaves, blocking sunlight and hindering photosynthesis. Dust buildup can also create a breeding ground for pests and diseases, further stressing your plants.

How to Fix It: Regularly clean your plants’ leaves by gently wiping them with a soft, damp cloth or using a gentle shower spray. This not only removes dust but also helps keep pests at bay. For delicate plants, use a soft brush or a gentle stream of lukewarm water to rinse off the dust. Maintaining clean foliage ensures that your plants can efficiently absorb light and stay healthy throughout the winter months.

Insufficient Pot Drainage

orchid being repotted
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As indoor plants are watered less frequently during the winter, ensuring proper pot drainage becomes even more critical to prevent waterlogged soil and root rot. Poor drainage can quickly lead to plant decline, especially in dormant or slow-growing periods.

How to Fix It: Ensure that all plant pots have adequate drainage holes to allow excess water to escape. If your pots lack drainage, consider repotting your plants into containers that do or adding a layer of gravel or small stones at the bottom to improve water flow. Using well-draining potting mixes also helps prevent water retention and keeps your plants’ roots healthy and oxygenated.

Overcrowding

spider plant leaves turning yellow and brown
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During the winter, plants may continue to grow slowly, leading to overcrowding in pots if not managed properly. Overcrowded roots can compete for limited nutrients and space, stunting growth and making plants more susceptible to stress.

How to Fix It: Regularly inspect your plants for signs of overcrowded roots, such as roots growing out of drainage holes or the plant appearing root-bound. Repotting into larger containers or dividing clumped plants can provide the necessary space for healthy root development. Ensuring each plant has enough room to grow prevents competition for resources and supports overall plant health during the winter months.

November and December present a unique set of challenges for indoor plants, but with a little attention and care, you can help your green friends thrive throughout the winter. By addressing reduced light, maintaining proper humidity, adjusting watering routines, and ensuring a stable environment, you can overcome the obstacles that cause your plants to struggle during these colder months. Embrace these tips with the enthusiasm of a dedicated gardener, and watch your indoor garden flourish, bringing life and beauty to your home all winter long!

Cody Medina
Small Scale Farmer
Hi there! I'm Cody, a staff writer here at The Garden Magazine and a small-scale farmer living in Oregon. I've been gardening most of my life and now live on a quarter-acre farmstead with chickens, ducks, and a big garden.