Winter Survival Guide for Indoor Plants

Understanding Winter Challenges

Winter presents unique challenges for houseplants. Understanding these challenges helps you provide appropriate care during this demanding season.

The Winter Environment

Several environmental factors change dramatically during winter:

Light Changes

  • Significantly shorter days reduce total light hours
  • Lower sun angle decreases light intensity
  • More cloudy days further reduce available light
  • Snow reflection can create uneven light distribution

Indoor Air Quality

  • Heating systems create drier air
  • Reduced ventilation concentrates pollutants
  • Temperature fluctuations between day and night
  • Cold drafts from windows and doors
  • Hot spots near radiators and heating vents

Biological Impact

  • Most plants naturally slow growth or become dormant
  • Metabolism and water uptake decrease
  • Nutrient requirements change
  • Pest dynamics shift with indoor conditions
  • Recovery from stress takes longer

How Plants Respond to Winter

Plants have evolved various strategies to cope with winter conditions:

Growth Adjustments

  • Slowed or completely stopped growth
  • Reduced leaf production
  • Some species drop leaves partially or completely
  • Focus on root development rather than foliage
  • Energy conservation rather than expansion

Physiological Changes

  • Decreased photosynthesis rates
  • Reduced water uptake and transpiration
  • Changed nutrient absorption patterns
  • Altered hormone balances
  • Increased susceptibility to overwatering

Visible Signs

  • Slower or halted new growth
  • Smaller new leaves if growth continues
  • Some leaf yellowing or drop (normal for many species)
  • Reduced flowering or complete cessation
  • Color changes in some variegated plants

The Indoor Winter Paradox

Houseplants face a unique challenge during winter:

Natural vs. Artificial Environment

  • Plants are programmed for winter dormancy
  • Our homes maintain summer-like temperatures
  • This creates conflicting signals for plants
  • Results in stress from competing environmental cues
  • Requires careful balance in our care approach

The Caregiver's Challenge

  • Supporting natural cycles while preventing damage
  • Adjusting care without neglecting plants
  • Recognizing normal winter behavior vs. problems
  • Maintaining patience during the dormant period
  • Preparing for spring revival

By understanding these fundamental winter challenges, you can adapt your care routine to help your plants not just survive but thrive through the winter months. The key is working with your plants' natural tendencies rather than fighting against them.

Light Management

Adequate light is the most critical factor for winter houseplant survival. As natural light diminishes, strategic light management becomes essential.

Winter Light Realities

Winter light differs significantly from other seasons:

Quantitative Changes

  • Up to 50% fewer daylight hours in northern regions
  • Light intensity reduced by 30-50% due to sun angle
  • Increased cloud cover further reduces available light
  • Many plants receive below their minimum light requirements

Qualitative Differences

  • Winter sunlight contains different spectral balances
  • Window filtration further alters light quality
  • Home lighting doesn't replicate full sunlight spectrum
  • Plants must adapt to both reduced quantity and altered quality

Window Efficiency Changes

  • Windows that provided adequate light in summer may be insufficient
  • North-facing windows provide minimal plant-usable light
  • East/west windows offer shorter direct light periods
  • Even south-facing windows provide less intense light

Maximizing Natural Light

Implement these strategies to optimize available natural light:

Window Cleaning

  • Clean both interior and exterior glass surfaces
  • Remove screens when possible
  • Trim outdoor vegetation blocking windows
  • Consider professional cleaning for hard-to-reach windows

Plant Relocation

  • Move plants to your brightest windows
  • South-facing windows become prime real estate
  • Prioritize light-loving plants for best positions
  • Create a rotation schedule for sharing limited bright spots

Light Reflection

  • Use white or light-colored walls to bounce light
  • Place mirrors strategically to reflect window light
  • Use light-colored blinds that reflect rather than absorb light
  • Consider reflective plant stands or trays

Window Insulation Considerations

  • Balance thermal insulation with light needs
  • Use clear thermal films rather than frosted
  • Open curtains and blinds during all daylight hours
  • Consider removing heavy window treatments during winter

Supplemental Lighting Solutions

For most houseplants, supplemental lighting becomes necessary during winter:

When to Implement

  • Before plants show signs of light stress
  • As a preventive measure rather than a rescue effort
  • Typically from late fall through early spring
  • Especially important for flowering plants and high-light species

Light Types and Selection

LED Grow Lights

  • Most energy-efficient option
  • Full-spectrum LEDs provide balanced light
  • Minimal heat output prevents leaf burn
  • Long lifespan and low maintenance
  • Available in various sizes and configurations

Fluorescent Options

  • T5 high-output fluorescents work well for most houseplants
  • Affordable and readily available
  • Choose "daylight" spectrum (5000-6500K)
  • Effective for supplementing moderate-light plants
  • Require closer positioning than LEDs

Light Placement and Duration

  • Position lights 12-24 inches above plants (varies by type and intensity)
  • Provide 12-16 hours of supplemental light daily
  • Use timers for consistency
  • Adjust height based on plant response
  • Consider light stands for flexible positioning

Light Intensity Guidelines

  • Low-light plants: 500-1,000 lux
  • Medium-light plants: 1,000-2,500 lux
  • High-light plants: 2,500+ lux
  • Use a light meter app to measure actual levels
  • Adjust based on individual plant response

Plant Positioning Strategies

Strategic placement helps maximize light exposure:

Tiered Arrangements

  • Use plant stands, shelves, or hanging options
  • Place plants at different heights to prevent shading
  • Position higher-light plants at the top
  • Rotate positions periodically for even exposure

Grouping Considerations

  • Avoid overcrowding that creates shade
  • Group plants with similar light needs
  • Create space between plants for light penetration
  • Consider growth habits when arranging

Rotation Schedule

  • Turn plants ¼ turn weekly
  • Track rotation with a simple system
  • Pay special attention to plants showing uneven growth
  • Consider marking pots to maintain consistent rotation

By implementing these light management strategies, you can significantly offset winter's light limitations. Remember that light is the foundation of all plant functions—when light needs are met, plants become more resilient to other winter challenges.

Watering Adjustments

Winter requires significant changes to watering practices. Proper winter watering prevents the most common cause of winter plant death: overwatering.

Understanding Winter Water Needs

Several factors reduce plants' water requirements during winter:

Reduced Transpiration

  • Plants lose less water through leaves in winter
  • Lower light levels decrease photosynthesis and water usage
  • Cooler temperatures slow evaporation from soil and leaves
  • Dormant or semi-dormant plants have minimal water needs

Slower Soil Drying

  • Soil stays moist longer between waterings
  • Evaporation rates decrease significantly
  • Root activity slows, reducing water uptake
  • Pot material affects drying rates (plastic retains moisture longer than terracotta)

Seasonal Growth Changes

  • Dormant plants require minimal water
  • Semi-dormant plants need reduced but consistent moisture
  • Even actively growing plants use less water than in summer
  • Root function often slows even when foliage appears active

Winter Watering Principles

Follow these guidelines for successful winter watering:

The Fundamental Shift

  • Water based on soil moisture, never on a schedule
  • Expect to water 30-50% less frequently than in summer
  • Allow soil to dry more deeply between waterings
  • When in doubt, wait another day before watering

Checking Soil Moisture

  • Insert finger 1-2 inches into soil to check moisture
  • Use a wooden skewer or moisture meter for deeper or larger pots
  • Lift pots to assess weight (dry pots are significantly lighter)
  • Check soil color and texture (dry soil is lighter in color)
  • Pay attention to pot material (terracotta dries faster than plastic)

Watering Technique Refinements

  • Water thoroughly when you do water
  • Ensure complete soil saturation
  • Allow excess to drain completely
  • Empty saucers promptly to prevent root soaking
  • Use room temperature water to prevent root shock
  • Consider bottom watering for more even moisture distribution

Plant-Specific Considerations

Different plant types require different winter watering approaches:

Dormant Plants

  • Drastically reduce watering
  • Some may need no water for extended periods
  • Research specific species requirements
  • Examples: Amaryllis, Cyclamen, Calla Lilies

Succulents and Cacti

  • Minimal watering—often once monthly or less
  • Allow to dry completely between waterings
  • Watch for shriveling as a sign of needed water
  • Provide excellent drainage and avoid cold, wet soil

Tropical Foliage Plants

  • Moderate reduction in watering
  • Allow top 1-2 inches of soil to dry out
  • Maintain more consistent moisture for thin-leaved varieties
  • Examples: Philodendrons, Pothos, Dracaenas

Winter-Flowering Plants

  • Research specific needs for each species
  • Many need consistent moisture to support blooming
  • Avoid waterlogging that can cause bud drop
  • Examples: Christmas Cactus, Cyclamen, African Violets

Common Winter Watering Problems

Be alert for these typical winter watering issues:

Overwatering Symptoms

  • Yellowing leaves (often lower leaves first)
  • Soft, mushy stems near soil line
  • Mold on soil surface
  • Fungus gnats presence
  • Foul smell from soil
  • Wilting despite moist soil

Underwatering Symptoms

  • Crispy leaf edges or tips
  • Curling leaves
  • Slow recovery when water is provided
  • Leaf drop beyond normal seasonal shedding
  • Shriveling in succulent plants

Root Rot Prevention

  • Critical in winter when recovery is difficult
  • Ensure excellent drainage in all pots
  • Consider adding extra perlite to heavy soils
  • Use terracotta pots for moisture-sensitive plants
  • Treat at first sign—remove affected roots and repot in fresh soil

Special Situation: Cold Soil

  • Soil temperature affects water uptake
  • Cold soil near windows can create "physiological drought"
  • Plants may wilt despite adequate soil moisture
  • Move pots away from cold windowsills
  • Use pot feet or insulating materials under containers

By adjusting your watering routine for winter conditions, you help prevent the most common cause of winter plant death while supporting your plants' natural seasonal needs. Remember that it's always easier to revive a slightly underwatered plant than to save an overwatered one, especially during winter.

Temperature Control

Managing temperature is crucial for winter plant health. Both cold extremes and overheating can stress plants during this season.

Understanding Temperature Needs

Most houseplants have specific temperature preferences:

Optimal Temperature Ranges

  • Daytime: 65-75°F (18-24°C) for most tropical houseplants
  • Nighttime: 55-65°F (13-18°C) ideal for most plants
  • Minimum thresholds: Most houseplants suffer below 50°F (10°C)
  • Maximum concerns: Excessive heat from radiators can stress plants

Plant-Specific Considerations

  • Tropical plants: Most sensitive to cold (Calathea, Ficus, many ferns)
  • Desert plants: Often tolerate cooler temperatures but need dry conditions
  • Temperature-sensitive plants: Some require very stable temperatures (African Violets)
  • Cool-preference plants: Some actually prefer cooler winter temperatures (Cyclamen, Azaleas)

Temperature Fluctuation Impact

  • Sudden changes more damaging than gradual shifts
  • Day/night differentials beneficial within reasonable range (10-15°F)
  • Extreme fluctuations can trigger leaf drop
  • Consistent temperatures better than erratic patterns

Common Winter Temperature Challenges

Several temperature issues typically arise during winter:

Cold Drafts

  • Windows and exterior doors create cold air currents
  • Can cause localized temperature drops of 10-20°F
  • Even brief exposure can damage sensitive plants
  • Often overlooked as plants may appear to be in warm rooms

Cold Windows

  • Window glass can be 20-30°F colder than room air
  • Creates a cold zone extending 1-2 feet from windows
  • Foliage touching glass can suffer frost damage
  • Soil in pots near windows cools significantly

Heating System Issues

  • Forced air systems create hot, dry zones
  • Radiators and heating vents can overheat nearby plants
  • Heating cycles create temperature fluctuations
  • Baseboard heaters often located under prime window space

Nighttime Challenges

  • Many homes lower temperatures significantly at night
  • Temperature can drop below plant tolerances near windows
  • Drawn curtains can trap plants in cold zones
  • Heating system cycling creates temperature fluctuations

Temperature Management Solutions

Implement these strategies to create appropriate temperature conditions:

Draft Protection

  • Identify and seal sources of cold drafts
  • Use weather stripping around doors and windows
  • Create barriers with furniture or screens
  • Move plants away from exterior doors
  • Be cautious with entryway plants during winter

Window Insulation

  • Create buffer zones between plants and cold glass
  • Use bubble wrap as window insulation
  • Consider thermal curtains that are opened during day
  • Apply window insulation film
  • Use plant stands to elevate pots away from cold windowsills

Heat Source Management

  • Keep plants at least 3 feet from radiators and heating vents
  • Use heat deflectors on vents near plants
  • Monitor soil drying near heat sources
  • Consider humidity trays for plants near heat sources
  • Rotate plants exposed to heating system effects

Temperature Monitoring

  • Use a min/max thermometer to track temperature fluctuations
  • Check actual temperatures at plant level, not just room temperature
  • Pay special attention to nighttime lows
  • Monitor microclimates created by windows and heating systems
  • Consider a smart temperature sensor for valuable collections

Creating Temperature Zones

Organize plants based on temperature needs:

Warm Zones

  • Interior walls away from windows
  • Upper shelves (where warm air collects)
  • Areas near (but not too close to) heat sources
  • Ideal for most tropical plants
  • Consider small space heaters for particularly valuable specimens

Cool Zones

  • Near windows with good insulation
  • Enclosed porches (if temperatures stay above 50°F/10°C)
  • Rooms kept cooler than main living areas
  • Ideal for plants requiring cool periods for dormancy or flowering
  • Monitor carefully to prevent cold damage

Stable Zones

  • Interior rooms with minimal temperature fluctuation
  • Areas away from exterior walls
  • Spaces without direct heating vents
  • Ideal for temperature-sensitive specimens
  • Often the best location for valuable or struggling plants

By carefully managing winter temperatures, you can prevent cold damage while also providing appropriate seasonal conditions for your specific plant collection. This temperature management becomes increasingly important as winter progresses and outdoor temperatures reach their lowest points.

Humidity Solutions

Winter's dry air presents one of the biggest challenges for houseplants. Implementing effective humidity strategies helps prevent common winter problems like brown leaf tips and spider mite infestations.

Understanding Winter Humidity Issues

Several factors contribute to winter humidity challenges:

Indoor Heating Effects

  • Heating systems dramatically reduce relative humidity
  • Typical winter indoor humidity falls to 10-30%
  • Most houseplants prefer 40-60% humidity
  • Some tropical plants need 60%+ humidity
  • Each 10°F increase in temperature cuts relative humidity by half

Plant Impact

  • Increased transpiration (water loss through leaves)
  • Inability to replace moisture fast enough through roots
  • Stress on cellular structures
  • Reduced disease resistance
  • Increased susceptibility to certain pests

Common Symptoms

  • Brown leaf tips and edges
  • Curling or crisping leaves
  • Flower buds dropping before opening
  • Leaf drop beyond normal seasonal shedding
  • Slowed or stunted growth
  • Spider mite infestations

Humidity Measurement and Monitoring

Understanding your actual humidity levels is essential:

Measurement Tools

  • Hygrometers provide accurate humidity readings
  • Digital hygrometers often include min/max recording
  • Combination temperature/humidity meters ideal for plant areas
  • Smart sensors can track patterns over time
  • Multiple meters help identify microclimates

Humidity Mapping

  • Check different areas of your home
  • Note variations between rooms
  • Identify naturally humid spaces (bathrooms, kitchen)
  • Track changes throughout the day
  • Document readings to identify patterns

Target Humidity Levels

  • 40-60%: Ideal for most common houseplants
  • 60%+: Preferred by tropical plants, ferns, calatheas
  • 30-40%: Acceptable for succulents and cacti
  • Below 30%: Problematic for most plants

Effective Humidity Solutions

Implement these strategies based on your needs and space:

Room Humidifiers

Evaporative Humidifiers

  • Add moisture without over-humidifying
  • Self-regulating based on ambient humidity
  • Less likely to create dampness issues
  • Require regular filter cleaning/replacement
  • Often quieter operation

Ultrasonic/Cool Mist Humidifiers

  • Produce visible mist
  • Can achieve higher humidity levels
  • May leave white mineral dust with hard water
  • Use distilled water for best results
  • Require regular cleaning to prevent mold

Warm Mist Humidifiers

  • Heat water to produce steam
  • Can slightly increase room temperature
  • Use more energy than cool mist options
  • Fewer issues with mineral deposits
  • Some find the warm mist more comfortable

Placement and Usage Tips

  • Position for even distribution without directly misting plants
  • Clean regularly according to manufacturer instructions
  • Use a humidistat to maintain appropriate levels
  • Consider running at night when heating systems are most active
  • Fill with room temperature water to reduce condensation

Localized Humidity Methods

For targeted humidity around specific plants:

Humidity Trays

  • Place pebbles or stones in a shallow tray
  • Add water below the top of the pebbles
  • Set plants on pebbles (not in water)
  • Refill as water evaporates
  • Group multiple plants around larger trays

Grouping Plants

  • Plants naturally release moisture through transpiration
  • Grouping creates a collective humid microclimate
  • Most effective with leafy, actively growing plants
  • Arrange with space for air circulation
  • Consider decorative ways to group plants closely

Mini Greenhouses

  • Glass cloches for individual plants
  • Clear plastic storage boxes with ventilation
  • Terrarium setups for smaller plants
  • Greenhouse cabinets for collections
  • Indoor greenhouse tents for larger specimens

Bathroom and Kitchen Placement

  • Naturally higher humidity from showers and cooking
  • Rotate plants through these spaces periodically
  • Consider permanent placement for humidity-loving plants
  • Ensure adequate light in these typically darker rooms
  • Monitor for adequate air circulation

Common Humidity Misconceptions

Avoid these ineffective or problematic approaches:

Misting Limitations

  • Provides only minutes of increased humidity
  • Can cause fungal issues if leaves stay wet
  • Not a substitute for ambient humidity
  • Can be beneficial for certain plants if done in morning
  • More effective when combined with other methods

Pebble Tray Realities

  • Creates very localized humidity
  • Effectiveness limited to immediate area
  • Requires consistent maintenance
  • Works best for small plants or in combination with other methods
  • More effective with warm water (refill frequently)

Overhumidification Concerns

  • Can create conditions for mold and mildew
  • May damage window frames and walls
  • Watch for condensation on windows as warning sign
  • Balance plant needs with home structure considerations
  • Use dehumidifiers if needed in problem areas

By implementing appropriate humidity solutions, you can significantly reduce winter stress on your houseplants. Remember that consistent moderate humidity is more beneficial than extreme fluctuations, and different plants have different humidity requirements.

Winter Pest Management

Winter creates unique pest dynamics for houseplants. Understanding and addressing these seasonal pest patterns helps prevent infestations during this vulnerable period.

Winter Pest Patterns

Several factors influence pest activity during winter:

Environmental Influences

  • Heating systems create ideal conditions for certain pests
  • Reduced air circulation in closed homes allows populations to establish
  • Decreased natural predators indoors
  • Plants under stress have lower natural defenses
  • Reduced growth means slower recovery from damage

Common Winter Pests

Spider Mites

  • Thrive in warm, dry conditions created by heating systems
  • Complete life cycle in as little as 7 days in warm homes
  • Often unnoticed until significant damage occurs
  • Identified by fine webbing and stippled yellowing on leaves
  • Most common winter houseplant pest

Mealybugs

  • Accelerated reproduction in consistent indoor temperatures
  • Protected from natural predators
  • Spread easily in closely grouped plants
  • Identified by white, cottony masses in leaf axils and undersides
  • Can develop resistance to treatments over time

Scale Insects

  • Adult scales become dormant and highly resistant in winter
  • Immature "crawlers" remain active and spread
  • Often brought in on holiday plants or greenery
  • Identified by small bumps along stems and leaf undersides
  • Difficult to eliminate once established

Fungus Gnats

  • Thrive in consistently moist soil conditions
  • Adults are annoying but larvae damage roots
  • Complete life cycle in 3-4 weeks indoors
  • Identified by small black flies around plants
  • Indicator of overwatering issues

Preventive Winter Pest Strategy

Implement these approaches to prevent winter pest problems:

Environmental Management

  • Maintain appropriate humidity (40-60%) to discourage spider mites
  • Ensure good air circulation without creating drafts
  • Clean dust from leaves regularly as dust harbors pests
  • Isolate new plants and holiday greenery for 2-3 weeks
  • Keep leaf litter and debris cleaned up

Regular Inspection Routine

  • Establish a weekly inspection schedule
  • Pay special attention to susceptible plants
  • Check leaf undersides and stem joints carefully
  • Use a magnifying glass for early detection
  • Look for early warning signs like stippling or sticky residue

Preventive Treatments

  • Consider monthly neem oil applications for high-value plants
  • Use yellow sticky traps to monitor for flying pests
  • Apply diatomaceous earth as a barrier on soil surface
  • Consider beneficial nematodes for soil-dwelling pests
  • Wipe leaves periodically with a soft, damp cloth

Early Intervention Techniques

Address pest issues promptly when detected:

For Spider Mites

  • Increase humidity around affected plants
  • Spray leaves thoroughly with water, including undersides
  • Apply insecticidal soap or neem oil weekly for 3 weeks
  • Consider predatory mites for valuable collections
  • Isolate affected plants to prevent spread

For Mealybugs and Scale

  • Remove visible pests with alcohol-dipped cotton swabs
  • Apply insecticidal soap or neem oil to all plant surfaces
  • Repeat treatments weekly for at least 3 weeks
  • Consider systemic treatments for severe infestations
  • Be prepared for multiple treatment cycles

For Fungus Gnats

  • Allow soil surface to dry completely between waterings
  • Apply BTI mosquito bits or dunks to soil
  • Use yellow sticky traps near soil surface
  • Consider sand or gravel top dressing to discourage egg-laying
  • Address overwatering issues that contribute to the problem

Special Winter Considerations

Some situations require extra attention during winter:

Holiday Plants

  • Inspect carefully before purchasing
  • Keep isolated from your main collection initially
  • Consider preventive treatments even if no pests are visible
  • Be especially cautious with poinsettias, which are prone to whiteflies
  • Check holiday greenery (wreaths, garlands) for hitchhiking pests

Treatment Limitations

  • Some treatments are less effective in winter's dry air
  • Systemic treatments work more slowly in dormant plants
  • Biological controls may be less effective in low humidity
  • Plants recover more slowly from both pest damage and treatments
  • Multiple treatment applications often necessary

Quarantine Protocols

  • Designate a specific quarantine area away from other plants
  • Maintain for at least 3 weeks before introducing to collection
  • Treat preventively during quarantine period
  • Check carefully before releasing from quarantine
  • Consider longer quarantine for especially valuable collections

By implementing these winter pest management strategies, you can prevent or quickly address pest issues before they become severe. Remember that prevention and early intervention are particularly important during winter when plants are more vulnerable and recover more slowly from damage.

Caring for Dormant Plants

Many houseplants benefit from a winter dormancy period. Understanding how to care for plants during this resting phase helps ensure their long-term health and vigor.

Understanding Plant Dormancy

Dormancy is a natural survival strategy with several important characteristics:

Types of Dormancy

  • True dormancy: Complete growth cessation, often with leaf drop
  • Semi-dormancy: Significantly slowed growth without complete stoppage
  • Rest period: Reduced growth and metabolic activity
  • Growth suspension: Temporary pause in visible growth

Purpose of Dormancy

  • Conserves energy during unfavorable conditions
  • Allows plants to survive with minimal resources
  • Prepares for robust spring growth
  • Often necessary for proper flowering cycles
  • Strengthens overall plant health long-term

Dormancy Signals

  • Shortened day length (primary signal for many plants)
  • Reduced light intensity
  • Temperature changes, particularly cooler nights
  • Reduced water availability
  • Natural hormone cycles

Identifying Dormancy Needs

Different plants have different dormancy requirements:

Plants Requiring True Dormancy

  • Many bulbs and corms (Amaryllis, Cyclamen)
  • Deciduous woody plants (Ficus carica, Hibiscus syriacus)
  • Some flowering perennials (Peonies if grown in containers)
  • Certain orchid varieties (Dendrobium nobile, Cymbidium)

Plants Benefiting from Rest Periods

  • Most common houseplants (Pothos, Philodendron, Dracaena)
  • Many succulents and cacti
  • Ferns and other woodland plants
  • Most flowering houseplants

Plants with Minimal Dormancy Needs

  • Some tropical plants from equatorial regions
  • Plants grown primarily for foliage
  • Specially bred varieties selected for continuous growth
  • Plants from regions without pronounced seasons

General Dormancy Care Guidelines

Follow these principles for dormant plant care:

Light Management

  • Provide bright, indirect light even during dormancy
  • Avoid dark storage for most plants
  • Reduce light duration for plants requiring day length cues
  • Some plants (like Amaryllis bulbs) can be stored in darkness

Water Reduction

  • Dramatically reduce watering frequency
  • Allow soil to dry more thoroughly between waterings
  • For true dormancy plants, follow species-specific protocols
  • Watch for shriveling or wilting as signs water is needed

Temperature Considerations

  • Many dormant plants prefer cooler temperatures
  • Typical range of 45-55°F (7-13°C) for true dormancy
  • Semi-dormant plants often do well at 55-65°F (13-18°C)
  • Protect from freezing temperatures
  • Avoid placing near heat sources that disrupt dormancy

Fertilizer Cessation

  • Stop fertilizing completely during dormancy
  • Resume only when new growth appears in spring
  • Over-fertilizing during dormancy can damage roots
  • Document when fertilizing was stopped for reference

Specific Plant Category Care

Different plant types require specific dormancy approaches:

Bulbs and Corms

Amaryllis

  • After flowering, continue growing as foliage plant
  • In fall, gradually reduce watering
  • When foliage yellows, cut back and place bulb in cool (50-55°F), dark location
  • Keep barely moist during dormancy
  • Bring out and resume watering when new growth appears

Caladium

  • Allow to dry down naturally in fall
  • When foliage dies back, stop watering
  • Store tubers in pots or remove and store in dry medium
  • Keep at 60-65°F in low humidity
  • Repot and resume watering in spring

Calla Lilies

  • Reduce watering as foliage yellows
  • Cut back foliage when completely yellow
  • Keep rhizomes in pot with barely moist soil
  • Store at 50-55°F
  • Resume normal watering when new growth appears

Deciduous Plants

Ficus Species (F. carica)

  • Allow natural leaf drop without concern
  • Reduce watering significantly after leaf drop
  • Provide cool but not freezing temperatures (35-50°F ideal)
  • Keep soil barely moist during dormancy
  • Resume normal care when new buds appear

Pomegranate and Similar Woody Plants

  • Expect leaf drop with shortened days
  • Reduce watering to minimal levels
  • Provide cool temperatures if possible
  • Protect from freezing
  • Increase water gradually when new growth appears

Desert Cacti

Holiday Cacti (Christmas, Thanksgiving, Easter)

  • Require cool temperatures (50-55°F) and reduced water to set buds
  • After flowering, reduce water and fertilizer
  • Keep cooler during winter rest period
  • Resume normal care in spring

True Desert Cacti

  • Need cool, dry winter rest to flower properly
  • Minimum temperatures of 45-50°F ideal for many species
  • Water minimally or not at all during rest period
  • Provide very bright light even during dormancy
  • Resume normal care when growth resumes in spring

Monitoring Dormant Plants

Keep track of plants during their rest period:

Minimal Maintenance Schedule

  • Check dormant plants weekly for:
    • Signs of pests
    • Mold or rot
    • Excessive drying
    • Unexpected growth
  • Provide minimal water as needed based on species
  • Maintain appropriate environmental conditions

Documentation

  • Record dormancy start dates
  • Note any special treatments provided
  • Document location changes
  • Plan spring care based on expected dormancy duration

Problem Indicators

  • Rotting or mushy stems or bulbs
  • Mold on soil surface
  • Pest activity during dormancy
  • Premature sprouting

By respecting and supporting your plants' natural dormancy needs, you set the stage for healthier growth cycles and potentially better flowering in the coming year. This alignment with natural rhythms is an important aspect of sustainable plant care.

Special Plant Categories

Some plant types require specific winter care approaches. Understanding these special needs helps you provide appropriate care for your entire collection.

Winter-Flowering Plants

Several houseplants naturally bloom during winter and need special attention:

Christmas Cactus (Schlumbergera)

  • Needs short days (less than 12 hours light) and cool nights (55-60°F) to set buds
  • Reduce watering slightly before bud set
  • Once buds form, maintain consistent moisture and avoid moving
  • After flowering, reduce water and fertilizer for rest period
  • Protect from drafts and heat sources during flowering

Cyclamen

  • Prefers cool temperatures (50-65°F)
  • Water from the bottom to avoid crown rot
  • Provide bright, indirect light
  • Maintain higher humidity around plant
  • After flowering, gradually reduce watering for dormancy

Amaryllis

  • Plant bulbs 6-8 weeks before desired bloom
  • Water sparingly until growth appears
  • Increase watering as stalk develops
  • Provide bright light to prevent legginess
  • Support tall flower stalks if needed

African Violets

  • Can bloom year-round with proper care
  • Maintain temperatures above 65°F
  • Provide consistent moisture without wetting leaves
  • Use special African violet fertilizers during blooming
  • Provide bright, indirect light or grow lights

Tropical Foliage Plants

Most common houseplants fall into this category and need adjusted winter care:

Philodendron, Pothos, Monstera

  • Reduce watering frequency but don't allow to completely dry
  • Maintain temperatures above 55°F
  • Provide as much light as possible
  • Hold off on fertilizing until late winter
  • Increase humidity to prevent brown leaf tips

Ferns

  • Keep consistently moist but not soggy
  • Maintain humidity above 50% if