Plant Care

Winter is the season that separates confident plant parents from frustrated ones. The same pothos that thrived on your windowsill all summer suddenly drops leaves. Your fiddle leaf fig sulks. The peace lily wilts between waterings, then drowns when you compensate. Sound familiar? You haven't changed anything — but winter has changed everything around your plants. Understanding why plants behave differently in winter — and exactly what to adjust — is the key to keeping your indoor garden lush through the coldest months. This complete guide covers every aspect of winter houseplant care: light, watering, humidity, temperature, fertilizer, repotting, pests, and the specific adjustments each plant type needs to thrive when the days are short and the heating is on. Why Winter Is Hard on Houseplants Most popular houseplants — monsteras, pothos, philodendrons, peace lilies — originate from tropical and subtropical environments where days stay long, temperatures stay warm, and humidity stays high year-round. Your home in December is the opposite of that. Here's what actually changes: Day length drops dramatically. In northern cities, you go from 15 hours of daylight in June to barely 9 in December. Even south-facing windows get a fraction of summer light. Light intensity falls. The sun sits lower in the sky, so even when it's sunny, the light hitting your windowsill is weaker and more oblique. Central heating dries the air. Indoor humidity plummets to 20–30% when the heat runs, far below the 50–70% most tropicals prefer. Cold glass creates cold zones. Plants sitting right against a window experience cold drafts and temperature swings that stress roots. Growth slows or stops. Most houseplants enter a period of reduced metabolic activity — not true dormancy, but a significant slowdown that changes every care parameter. Once you understand these five shifts, every winter care adjustment makes intuitive sense. The #1 Winter Mistake: Overwatering Overwatering kills more houseplants in winter than any other cause. Here's the chain reaction: Growth slows, so the plant absorbs far less water Reduced light means soil dries more slowly You water on the same schedule as summer Roots sit in soggy soil for days or weeks Root rot develops The plant shows stress symptoms (yellow leaves, wilting) that look like underwatering You water more — and the cycle accelerates The fix is simple but requires breaking the habit of calendar-based watering. In winter, always check before you water. Push your finger 2 inches into the soil, or use a moisture meter. Water only when the top 1–2 inches are dry for most tropicals, or when the entire pot feels light and the top half is dry for succulents and cacti. Winter Watering Frequency by Plant Type Plant Type Summer Frequency Winter Frequency Check Method Tropical foliage (pothos, philodendron, monstera) Every 7–10 days Every 12–18 days Top 2 inches dry Peace lily, ferns, calathea Every 5–7 days Every 10–14 days Top inch just dry Succulents and cacti Every 10–14 days Every 3–6 weeks Soil completely dry + 3 days Snake plant, ZZ plant Every 14–21 days Every 4–6 weeks Entire pot dry Orchids Every 7 days Every 10–14 days Roots silver/white, medium dry Fiddle leaf fig Every 7–10 days Every 14–21 days Top 2 inches completely dry Use terracotta pots in winter — their porous walls allow soil to dry more evenly, reducing the risk of waterlogged roots. Read our full terracotta vs plastic guide to understand which pot material suits which plant. Maximizing Winter Light Light is the single biggest limiting factor in winter plant health. Before adjusting anything else, maximize whatever natural light you have. Move Plants Closer to Windows In summer, plants a few feet from a window get adequate indirect light. In winter, that same plant may be receiving dangerously low levels. Move plants within 1–2 feet of the brightest windows you have. South-facing windows are best in the northern hemisphere; east or west windows are acceptable for medium-light plants. Clean Your Windows Dirty glass blocks a surprising amount of light — up to 30% in some studies. Wipe down windows on the inside and outside before winter sets in. Clean Dusty Leaves A layer of dust on broad leaves (monsteras, rubber plants, fiddle leaf figs) significantly reduces photosynthesis. Wipe leaves gently with a damp cloth monthly. For smaller-leafed plants, a gentle shower works well. Rotate Plants for Even Growth Winter light is directional. Rotate plants 90° every two weeks so all sides receive equal exposure and prevent one-sided, lopsided growth. Use Grow Lights to Supplement If you have plants in low-light areas, winter is the time to add a grow light. Full-spectrum LED grow lights placed 6–12 inches above foliage for 12–14 hours per day can fully substitute for window light. Our complete grow light guide covers every option from budget to professional. Winter Light Requirements by Plant Plant Minimum Winter Light Ideal Winter Placement Fiddle leaf fig Bright indirect (5–6 hrs) Within 2 ft of south window Monstera Medium indirect (3–4 hrs) Within 3 ft of south/east window Pothos, philodendron Low-medium (2–3 hrs) Within 4 ft of any window Snake plant, ZZ plant Low (1–2 hrs) Any room with a window Succulents, cacti Bright direct (4–6 hrs) South window or grow light Peace lily, ferns Low-medium (2–3 hrs) North or east window Humidity: The Hidden Winter Problem Central heating is brutal for humidity-loving plants. When outdoor temperatures drop and you turn on the heat, the relative humidity inside your home can fall to 20–30% — equivalent to a desert. Most tropical houseplants prefer 50–70% RH. Signs your plants are suffering from low humidity: Brown, crispy leaf edges (especially on calatheas, ferns, peace lilies) Curling leaves Increased susceptibility to spider mites (they thrive in dry conditions) Flowers dropping prematurely on orchids and peace lilies Four Ways to Increase Humidity 1. Humidifier (most effective): A cool-mist humidifier placed near your plant collection is the gold standard. Run it for 4–8 hours daily to maintain 50–60% RH. A $30–50 humidifier protects an entire plant collection. 2. Pebble tray: Fill a tray with pebbles, add water to just below the top of the pebbles, and set your pot on top. As the water evaporates, it raises humidity around the plant. Limited range (6–12 inches), but zero cost. 3. Plant grouping: Plants transpire water through their leaves. Grouping plants together creates a shared humidity microclimate. This pairs well with a pebble tray. 4. Bathroom/kitchen placement: If your bathroom or kitchen gets enough light, these naturally humid rooms are ideal winter homes for moisture-loving plants like ferns, calatheas, and peace lilies. Misting myth: Misting leaves provides only brief, fleeting humidity increases and can promote fungal disease on susceptible plants like begonias and African violets. Skip it in favor of the methods above. For a full breakdown of humidity strategies, humidity levels by plant species, and how to measure RH accurately, read our complete indoor humidity guide. Temperature: Drafts, Vents, and Cold Windows Most houseplants do fine in the temperature range you keep your home (65–75°F / 18–24°C). The danger isn't the thermostat setting — it's the temperature extremes created by: Cold window glass: A plant touching or right against a single-pane window in a northern climate can experience temperatures 10–15°F lower than room temperature, even when the room feels warm. Move plants at least 3–4 inches from cold glass. Heating vents: Forced-air heating blows warm, extremely dry air. Plants directly above or next to vents suffer desiccation stress. Move plants at least 3 feet from any vent. Door drafts: Plants near exterior doors experience repeated cold blasts every time the door opens. Move sensitive plants away from entryways. Radiators: Old-school radiators create pockets of intense dry heat. Keep plants at least 2 feet away. Temperature Tolerances for Common Houseplants Plant Minimum Safe Temp Prefers Cold Sensitivity Monstera deliciosa 60°F (16°C) 65–80°F Medium Pothos, philodendron 55°F (13°C) 65–80°F Low Fiddle leaf fig 60°F (16°C) 65–75°F High (hates drafts) Calathea, prayer plant 60°F (16°C) 65–75°F High Snake plant, ZZ plant 50°F (10°C) 60–80°F Very low Succulents 50°F (10°C) 60–75°F Variable Orchids (Phalaenopsis) 55°F (13°C) 65–80°F Medium Peace lily 55°F (13°C) 65–80°F Medium-High Stop Fertilizing (Or Reduce Significantly) This is one of the most important winter adjustments plant parents miss. Fertilizer is fuel for growth — but in winter, most houseplants have essentially paused their growth. Applying fertilizer to a dormant or slow-growing plant doesn't accelerate anything; it just builds up salt concentrations in the soil that burn roots and cause leaf tip browning. The rule: Stop fertilizing from October through February for most houseplants. Exceptions include: Plants actively growing under strong grow lights Tropical plants in warm, well-lit southern climates Winter-blooming plants like cyclamen, holiday cactus, and amaryllis If you do fertilize in winter, use half-strength and do it no more than monthly. Flush the soil with plain water every couple of months to clear any accumulated salts. Resume regular fertilization in spring — typically once you see new growth emerging, which signals the plant has "woken up." Don't Repot in Winter Repotting is a significant stressor even under ideal conditions. In winter, with reduced light, lower metabolic activity, and a compromised ability to grow new roots, repotting can seriously damage or kill a plant that would bounce back fine from the same procedure in spring. Unless a plant is in immediate crisis (severe root rot, roots escaping drainage holes in large quantities), wait until late February or March to repot. That's when days start lengthening and plants begin preparing for active growth. If you need to repot an emergency case in winter (e.g., a waterlogged plant with root rot), follow our complete repotting guide and place the plant in a warm spot with bright indirect light afterward. Withhold fertilizer and reduce watering until you see recovery signs. Winter Pests: What to Watch For Dry indoor air in winter creates ideal conditions for certain pest populations. Two are particularly problematic: Spider Mites Spider mites love hot, dry conditions — exactly what a heated winter room provides. You'll notice fine webbing on leaf undersides, tiny moving dots, and stippled, pale leaves. Treatment: raise humidity (their #1 deterrent), spray affected plants with neem oil solution or insecticidal soap, and isolate infected plants immediately. Check the undersides of every leaf — mites spread fast in dry conditions. Fungus Gnats Overwatering in winter creates soggy soil that's paradise for fungus gnat larvae. Adult gnats are annoying but harmless; larvae damage roots by feeding on organic matter and root tissue. Treatment: let soil dry thoroughly between waterings, apply sticky yellow traps for adults, and treat soil with Bacillus thuringiensis israelensis (BTi) or beneficial nematodes for larvae. See our full fungus gnat treatment guide for detailed protocols. Scale and Mealybugs Check for scale (brown bumps on stems and leaves) and mealybugs (white cottony clusters) monthly. These overwinter on houseplants and can explode in population when unchecked. Treat with 70% isopropyl alcohol on a cotton swab for small infestations, or neem oil spray for larger ones. Monthly inspections are your best defense. Pick up each pot, check leaf undersides, stems, and soil surfaces. Catching an infestation early makes treatment dramatically easier. Special Considerations for High-Maintenance Plants Fiddle Leaf Fig (Ficus lyrata) The fiddle leaf fig is notorious for winter drama. It drops leaves in response to: cold drafts, sudden temperature changes, being moved, low humidity, and overwatering. In winter, all of these risks peak simultaneously. Winter FLF protocol: Don't move it once placed (even turning it causes stress). Keep it away from all vents and cold windows. Water only when the top 2 inches are bone dry. Run a humidifier nearby. Read our complete fiddle leaf fig watering guide for seasonal details. Calathea and Prayer Plants These are the canaries in the humidity coal mine. Brown, crispy leaf edges appear immediately when humidity drops. Winter is their hardest season. Run a humidifier, group them with other plants, and avoid heating vents. Calatheas and prayer plants also prefer to stay root-bound, so avoid repotting in winter. Monstera Monsteras are surprisingly resilient but slow dramatically in winter. Expect no new leaves from November through February in most homes. This is normal — don't compensate by fertilizing or increasing watering. Maintain your monstera care routine but reduce frequency. New leaf production will resume enthusiastically in spring. Succulents and Cacti Succulents need their most dramatic care reduction in winter. Many species (especially hardy cacti and most sedums) are in near-dormancy and should receive almost no water — perhaps once every 4–6 weeks, just enough to prevent complete desiccation. Bright light remains critical: a south window or grow light is essential. Browse our low-maintenance succulent collection for hardy varieties that handle winter particularly well. Orchids Phalaenopsis orchids actually appreciate slightly cooler nights in fall (55–60°F) to trigger blooming, but dislike cold drafts. In winter, reduce watering and eliminate fertilizer. The reduced light is often fine — phals are low-light orchids. Read our complete orchid care guide for details. Plants That Actually Thrive in Winter Not all plants struggle when the days get short. These species are naturally adapted to lower light and cooler temperatures: Snake plants (Sansevieria): Essentially bulletproof in winter. Reduce watering to once a month and they'll be fine. ZZ plants: Their rhizome root system stores water, making them extremely drought-tolerant and low-light capable. Peace lilies: One of the best low-light, lower-temperature performers. They'll bloom in conditions that stress most tropicals. Pothos and philodendrons: Very forgiving of lower light and can handle wider temperature ranges than more delicate tropicals. Explore our philodendron collection. Chinese evergreens (Aglaonema): Specifically bred for low-light indoor conditions. Winter barely fazes them. Cast iron plant (Aspidistra): Lives up to its name. Tolerates cold, low light, and neglect. If you're looking to expand your collection before winter, these are the safest choices. Browse our full plant collection and filter by light requirement. Winter Plant Care Checklist Use this monthly checklist to keep your collection healthy all winter: Every Week ☐ Check soil moisture before watering (finger test or moisture meter) ☐ Check humidity levels with a hygrometer ☐ Inspect leaves for pest signs (undersides especially) ☐ Rotate plants for even light exposure Every Month ☐ Wipe dusty leaves clean ☐ Check soil for salt buildup (white crust on soil surface) ☐ Flush soil with plain water if salt is accumulating ☐ Assess light levels — consider relocating plants ☐ Check drainage holes are not blocked Once Each Season (Fall Prep) ☐ Clean windows inside and out ☐ Move plants away from cold glass and heating vents ☐ Set up humidifier or pebble trays ☐ Reduce fertilizer to half-strength or stop completely ☐ Treat any existing pest issues before heating season starts Troubleshooting: Common Winter Problems Symptom Most Likely Cause Fix Yellow leaves Overwatering Let soil dry, check drainage, reduce watering frequency Brown crispy leaf edges Low humidity Add humidifier, move away from heating vents Dropping leaves Cold draft, overwatering, or sudden move Check temp near plant, reduce watering, don't move the plant Leggy, pale new growth Insufficient light Move closer to window or add grow light Wilting despite moist soil Root rot from overwatering Remove from pot, trim dead roots, repot in fresh dry mix No new growth Normal winter dormancy Normal — do not over-fertilize trying to force growth White crusty soil surface Fertilizer salt buildup Flush soil with plain water; reduce/stop fertilizer Fine webbing, pale leaves Spider mites (from dry air) Increase humidity, neem oil spray, isolate plant Tiny flies, larva in soil Fungus gnats (from wet soil) Dry out soil, sticky traps, BTi treatment For a deep dive on diagnosing plant stress symptoms, our overwatered vs. underwatered guide and yellow leaves troubleshooting guide walk through every scenario. Frequently Asked Questions Do I need to water less in winter? Yes — significantly less. Most houseplants need 30–50% less water in winter due to reduced growth, lower light, and slower evaporation. Always check soil moisture before watering rather than sticking to a schedule. Should I fertilize houseplants in winter? For most houseplants, stop fertilizing from October through February. Applying fertilizer to a plant that's not actively growing builds up harmful salts without benefiting the plant. Why are my plant leaves turning yellow in winter? Yellowing in winter is almost always caused by overwatering. Reduce watering frequency, ensure good drainage, and check for root rot if the problem is severe. Can I keep plants near a window in winter? Yes, but keep them a few inches away from the glass itself. Cold glass creates cold microclimates that stress tropical plants. The goal is to get light without the cold. Why won't my plant grow in winter? This is completely normal. Most houseplants significantly slow or pause growth when light levels drop below their threshold. Don't try to force growth with extra fertilizer — wait for spring. What temperature is too cold for houseplants? Most tropical houseplants prefer no colder than 55–60°F (13–16°C). Exposure to temperatures below 50°F (10°C) can cause cold damage (black or brown patches on leaves). The tougher plants — snake plants, ZZ plants, pothos — tolerate lower temperatures better than delicate tropicals. What is the best way to increase humidity for plants in winter? A cool-mist humidifier is the most effective and reliable method. A $30–50 unit will maintain adequate humidity for an entire plant collection. Supplement with plant grouping and pebble trays in particularly dry rooms. The Big Picture: Winter Is About Maintenance, Not Growth The most important mindset shift for winter plant care is this: your goal isn't to grow your plants in winter — it's to maintain them. Keep them healthy, hydrated just enough, and alive so they can explode with new growth the moment spring arrives. Plants that are well-maintained through winter — not over-fertilized, not overwatered, protected from cold drafts and dry air — come out of winter in far better condition than plants that were pushed during their natural slow period. Trust the seasonal rhythm. If you're looking to add plants that are genuinely easy to manage through cold months, our low-maintenance collection and bestsellers feature species specifically chosen for home resilience. And if you're just starting out with houseplants, our beginner houseplant guide is a great starting point for building a collection that thrives in every season. Winter is shorter than it feels. With the right adjustments, your plants will come through it beautifully.