For gardeners, watching plants put out new leaves, produce flowers, and increase in size can be one of the most rewarding parts of caring for a garden. That visible growth makes it easy to associate new development with good health. When a plant suddenly stops growing, loses its leaves, or appears inactive for weeks or months, it can therefore seem as though something has gone wrong.
In many cases, however, a period of inactivity is completely normal. Plants have developed ways to respond to changing environmental conditions, and one of those strategies is dormancy. Saralyn Wasserman explains that, during dormancy, a plant temporarily reduces active growth, helping it survive during periods when conditions are less favorable.
Understanding dormancy can help gardeners distinguish between a plant following its natural seasonal cycle and one that may be struggling. It can also prevent common care mistakes, such as providing excessive water or fertilizer to a plant that simply needs time to rest.
What Is Plant Dormancy?
Plant dormancy is a temporary period during which growth and development slow considerably. Although a dormant plant may appear to be doing very little, it is not necessarily dead or unhealthy. Dormancy can occur in many types of plants, including trees, shrubs, perennials, bulbs, and some plants grown indoors. The way it looks can vary considerably from one species to another. A deciduous tree may lose all of its leaves, while a perennial may die back almost completely above ground. Another plant may retain its foliage but produce little visible new growth for an extended period.
The University of New Hampshire Extension explains that dormancy is an important survival mechanism for many perennial plants, allowing them to withstand unfavorable winter conditions and resume growth when conditions improve.[1] The important distinction is that dormancy is generally temporary. What looks like inactivity above ground may be part of a normal life cycle rather than an indication that the plant has died.
Why Do Plants Become Dormant?
Plants constantly respond to conditions in their environment. Changes in daylight, temperature, and moisture can all influence growth. In temperate climates, many plants begin preparing for dormancy as the growing season comes to an end. Continuing to produce tender new leaves and stems shortly before freezing temperatures arrive could make a plant more vulnerable to cold damage. Instead, growth slows and the plant prepares for winter.
Dormancy is not exclusively associated with cold temperatures. Some plants are adapted to environments where drought or seasonal reductions in rainfall create periods that are unfavorable for active growth. In those circumstances, slowing growth can help plants survive until conditions become more favorable.
The U.S. Forest Service explains that deciduous trees undergo a series of physiological changes as daylight hours shorten and temperatures decline. These seasonal signals contribute to processes such as leaf color change, leaf drop, and preparation for winter dormancy.[2] For gardeners, this means a plant’s behavior should always be considered within the context of its environment and natural growth cycle.
What Does Dormancy Look Like?
One reason dormancy can concern gardeners is that its visible signs sometimes resemble plant decline. Deciduous trees and shrubs provide one of the most familiar examples. Leaves change color and fall as the growing season ends, leaving bare branches throughout winter. Despite appearances, living tissue remains within the plant, ready to support new growth when favorable conditions return.
Herbaceous perennials can look even more dramatic. Their above-ground stems and foliage may turn brown and die back completely. The roots, crowns, rhizomes, or other structures below the soil can remain alive, allowing new shoots to emerge during the next growing season. Bulbs provide another familiar example. Tulips, daffodils, and other bulb-producing plants can disappear after their foliage dies back, only to emerge again during the appropriate season.
Dormancy or seasonal slowing among indoor plants may be less obvious. Some houseplants simply produce fewer leaves or grow much more slowly during fall and winter. Recognizing these patterns can help gardeners avoid assuming that a lack of visible growth automatically signals poor health.
How Seasonal Changes Affect Plant Growth
Light is one of the most important environmental factors affecting plants. As the seasons change, both the length of the day and the intensity of available sunlight can change substantially. This matters even for plants growing indoors. A houseplant positioned near a window may receive significantly less light during winter than during summer. Indoor temperatures and humidity levels may also change as heating systems begin operating.
The University of Minnesota Extension notes that the growth of many houseplants slows considerably during winter because of lower light levels and shorter days. It recommends adjusting care to reflect these changing conditions rather than treating winter as though it were the peak growing season.[3] As a result, a houseplant that produced new foliage regularly during spring and summer may appear almost unchanged for weeks during winter. That slowdown does not automatically mean that the plant needs more fertilizer, water, or a larger pot.
Dormant and Slow-Growing Plants May Need Less Water
Watering is one area where understanding seasonal growth patterns becomes particularly important. An actively growing plant uses water as it develops new leaves, stems, flowers, and roots. When growth slows, water requirements may also decrease. Cooler temperatures and lower light levels can additionally cause potting mix to dry more slowly. Continuing to water according to a summer schedule may therefore result in overly wet soil for some plants.
Rather than watering strictly according to the calendar, gardeners should pay attention to soil conditions and the needs of the individual species. Some plants should be allowed to dry to a particular degree before receiving additional water, while others prefer more consistent moisture. Dormancy does not mean that every plant should receive no water at all. Roots and other living tissues may still require moisture even when very little is happening above ground. The goal is to adjust to care appropriately rather than automatically maintaining the same routine throughout the year.
Fertilizer Usage During Periods of Slow Growth
A plant that is not producing new leaves may tempt a gardener to reach for fertilizer. If growth has stopped, providing additional nutrients can seem like an obvious solution.
However, fertilizer cannot force a plant out of its natural seasonal cycle. Many plants make the greatest use of supplemental nutrients during periods of active growth. When growth slows considerably, their fertilizer requirements change as well.
The University of Maryland Extension advises reducing or stopping fertilization of many houseplants during fall and winter when growth slows because of lower light levels. Fertilizing plants that are not actively growing can contribute to an accumulation of fertilizer salts in the potting medium.[4] Because fertilizer needs differ between species, gardeners should research the requirements of individual plants rather than assuming that a lack of new growth indicates a nutrient deficiency.
Dormancy Versus an Unhealthy Plant
Although dormancy is normal, not every plant that stops growing is dormant.
Growth can slow due to insufficient light, inappropriate watering, pest problems, disease, root damage, extreme temperatures, or other environmental stressors. Context is therefore important. Gardeners should start by considering the time of year and the plant’s normal growth cycle. Understanding whether the species is known to lose its foliage during winter, or whether the plant slowed down at a similar time in previous years can facilitate a better understanding of a plant’s life cycle.
Once gardeners identify their plant’s species, they can research its natural seasonal behavior and determine whether a period of inactivity can be expected. Upon examination, unusual spotting, extensive pest activity, soft or decaying stems, and other abnormal changes may warrant closer investigation.
Avoid Trying to Force New Growth
When a plant appears dormant, patience can be one of the most useful gardening skills.
Adding extra water, fertilizer, heat, or making unnecessary environmental changes in an attempt to produce immediate growth can sometimes create more problems than solutions. Dormancy is an adaptation rather than a failure to grow. A plant may be protecting sensitive tissues, conserving stored resources, or simply waiting for environmental conditions that favor renewed growth.
Gardeners should be cautious about immediately discarding outdoor plants that appear lifeless during winter. A perennial that looks like little more than dried stems in January may still have a living root system below the soil. Learning the normal growth cycle of each species makes it easier to determine when patience is appropriate or when a plant requires intervention.
What Happens When Dormancy Ends?
As environmental conditions become favorable again, dormant plants can transition back into active growth. For many plants in temperate climates, increasing temperatures and longer days are important parts of this seasonal transition. Buds begin to swell, new leaves appear, and stems start growing. Perennials may send new shoots through soil, while bulbs produce fresh foliage and eventually flowers. Michigan State University Extension explains that plants respond to environmental cues as they move into and out of dormancy, with factors such as exposure to cold temperatures and subsequent warming helping to regulate the transition toward spring growth.[5]
The process is not necessarily immediate. One plant may begin growing weeks before another, even when they occupy the same garden. As growth resumes, gardeners can gradually adjust their care routines. Plants may begin using water more rapidly, while some may benefit from appropriately timed fertilization, pruning, repotting, or other types of seasonal maintenance. Watching the plant itself rather than relying solely on a calendar can help gardeners recognize when active growth has truly returned.
Learning to Appreciate a Plant’s Natural Cycle
Successful gardening is not always about encouraging plants to grow as quickly as possible. It is also about understanding their natural rhythms. Periods of vigorous growth, flowering, seed production, leaf loss, and dormancy can all be normal parts of a plant’s life cycle. A garden that appears quiet during one season may simply be preparing for another. Understanding dormancy can make plant care less confusing. Instead of immediately assuming something is wrong when growth slows, gardeners should consider the season, environmental conditions, and natural habits of the species.
Most importantly, dormancy demonstrates how closely plant development is connected to the surrounding environment. Changes in daylight, temperature, and moisture can influence when plants grow and when they reduce their activity. For gardeners, learning to recognize these cycles encourage a more thoughtful approach to plant care. Sometimes the appropriate response to a plant that has stopped growing is not to encourage additional growth at all. Providing suitable conditions and allowing the plant to follow its natural cycle may be exactly what it needs. What appears to be a plant doing nothing may be an important period of rest and preparation for the growing season ahead.
Footnotes
- University of New Hampshire Extension, “Overwintering Perennials.” Discusses winter dormancy in perennial plants and how dormancy helps plants survive unfavorable seasonal conditions.
https://extension.unh.edu/blog/2018/11/overwintering-perennials - U.S. Forest Service, “Science of Fall Colors.” Explains how shorter days and changing temperatures influence deciduous trees as they prepare for winter, including changes associated with leaf color and leaf drop.
https://www.fs.usda.gov/visit/fall-colors/science-of-fall-colors - University of Minnesota Extension, “Winter Houseplant Tips.” Discusses how shorter days and lower winter light levels affect houseplant growth and why seasonal care adjustments may be necessary. https://extension.umn.edu/about/our-stories/news/winter-houseplant-tips
- University of Maryland Extension, “Indoor Plant Care.” Provides guidance on seasonal houseplant care, including reducing fertilization when plants are growing slowly and avoiding fertilizer salt buildup. https://extension.umd.edu/resource/indoor-plant-care
- Michigan State University Extension, “Winter Dormancy and Chilling in Woody Plants.” Explains how environmental conditions, including cold exposure and subsequent warming, influence dormancy and the return of spring growth in woody plants.
https://www.canr.msu.edu/news/winter_dormancy_and_chilling_in_woody_plants
[1]University of New Hampshire Extension, “Overwintering Perennials.” Discusses winter dormancy in perennial plants and how dormancy helps plants survive unfavorable seasonal conditions.
https://extension.unh.edu/blog/2018/11/overwintering-perennials
[2]U.S. Forest Service, “Science of Fall Colors.” Explains how shorter days and changing temperatures influence deciduous trees as they prepare for winter, including changes associated with leaf color and leaf drop. https://www.fs.usda.gov/visit/fall-colors/science-of-fall-colors
[3]University of Minnesota Extension, “Winter Houseplant Tips.” Discusses how shorter days and lower winter light levels affect houseplant growth and why seasonal care adjustments may be necessary. https://extension.umn.edu/about/our-stories/news/winter-houseplant-tips
[4]University of Maryland Extension, “Indoor Plant Care.” Provides guidance on seasonal houseplant care, including reducing fertilization when plants are growing slowly and avoiding fertilizer salt buildup. https://extension.umd.edu/resource/indoor-plant-care
[5]Michigan State University Extension, “Winter Dormancy and Chilling in Woody Plants.” Explains how environmental conditions, including cold exposure and subsequent warming, influence dormancy and the return of spring growth in woody plants. https://www.canr.msu.edu/news/winter_dormancy_and_chilling_in_woody_plants
