The Short Answer
Winter changes three things that directly affect houseplant care: available light drops as days shorten and the sun’s angle lowers, indoor air dries out from heating systems, and most plants slow their growth in response to these seasonal cues even though indoor temperature stays relatively stable. Watering, feeding, and light placement all need adjusting to match.
Watering Less, Not on the Same Schedule
A plant growing more slowly uses less water, and soil that dried out in three days during summer’s brighter, more active growth period may take a week or more to dry out at the same rate in winter. Continuing a summer watering frequency into winter without checking soil moisture directly is one of the most common causes of winter overwatering and root rot, since the plant simply isn’t using water as quickly as it was a few months earlier.
Moving Plants Closer to Windows
Light intensity through a given window can drop noticeably from summer to winter as the sun’s angle lowers and days shorten. A spot that provided ample bright indirect light in July may only offer medium light by December, which is why moving sun-loving plants closer to windows for the winter months, then back to their summer position in spring, is a common and useful seasonal adjustment.
Reducing or Stopping Fertilizer
Most houseplants slow down or enter a form of dormancy in fall and winter and don’t need feeding during that period, since they’re not actively using nutrients for new growth the way they do in spring and summer. Continuing to fertilize on a summer schedule through winter, when the plant isn’t using it, risks a buildup of unused fertilizer salts in the soil that can damage roots.
Managing Lower Humidity
Indoor heating systems typically lower relative humidity significantly compared to both summer conditions and a plant’s native tropical environment, which is why crispy brown leaf tips and edges often become more noticeable on humidity-sensitive plants specifically during winter. Grouping plants together, using a pebble tray, or running a humidifier during winter months addresses this seasonal dip more effectively than misting, which only provides a brief, temporary humidity boost.
Watching for Cold Drafts and Heat Sources
Plants placed near a window that gets genuinely cold at night, or near a heating vent that blows hot, dry air directly onto foliage, can experience temperature stress independent of their general watering and light needs. Moving plants slightly away from single-pane windows during particularly cold nights, or away from direct heater airflow, prevents this kind of avoidable seasonal stress.
What NOT to Change in Winter
Repotting is generally better postponed until spring, since a dormant or slow-growing plant recovers from the disturbance of repotting more slowly during winter than it would during active spring growth. Similarly, this isn’t the season to expect or push for new growth through pruning meant to encourage branching — that’s more effective and better tolerated once the plant re-enters its active growing period.
FAQ
Do all houseplants slow down in winter, or just some?
Most common tropical houseplants do slow down to some degree, though the extent varies by species — some show a dramatic pause in growth, while others slow only modestly.
Is it normal for a plant to drop a few leaves in winter even with good care?
Yes, some leaf drop, especially of older lower leaves, can be a normal part of a plant’s response to reduced light and its own seasonal slowdown, distinct from a sign of poor care.
When should I go back to a normal summer care routine?
As days lengthen and new growth resumes in spring, gradually increasing watering frequency and resuming regular feeding, timed to the plant’s own visible signs of active growth rather than a fixed calendar date, works better than switching all at once on an arbitrary day.
