Free tools Windows power users keep installed
One-click scans. No signup required.
Yes—some mums can survive frost and return in spring, but not all mums are equally hardy. Hardy or garden mums are perennial chrysanthemums that may overwinter outdoors. Florist mums and many decorative fall mums sold in full bloom are much less reliable, especially when planted late in the season. A light frost may damage flowers and leaves without killing the crown, but a prolonged freeze, soggy soil, drought, or repeated freeze-thaw cycles can kill the plant.
The right protection depends on whether your mum is in a pot or in the ground, whether the frost is only overnight, and whether the plant has had time to establish roots.
First, identify the kind of mum you have
Before deciding how much winter protection a mum needs, check its plant label. Look for terms such as “hardy mum,” “garden mum,” or “perennial mum.” These plants are bred and selected for outdoor growing and are commonly described as hardy in approximately USDA Zones 5–9. That range is only a starting point: the cultivar, local exposure, drainage, planting date, snow cover, and severity of the winter all affect survival. The Royal Horticultural Society’s chrysanthemum growing guide provides general growing information, while regional extension guidance explains why individual plants can behave differently.
A mum sold as a florist mum or greenhouse-forced chrysanthemum may be intended primarily for temporary indoor or seasonal display. It can survive outdoors in some climates, but it should not be assumed to be a dependable perennial. Even a labeled garden mum may fail to return if it was purchased in full bloom in late fall and planted only days before freezing weather.
The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →#1 Best Overall
- Product Features: Our plant covers are ideal for protecting all plant. Made from premium 1 oz/sq non-woven fabric, their durability and breathability ensuring both insulation against frost and facilitation of sunlight penetration for healthy plant growth
- Versatility: These covers serve triple duty as frost protection, snow protection, animal barriers, insect barriers, and sun shields, adaptable to various gardening needs, the versatile row covers promise a tailored fit for all horticultural necessities
- Usability: Users can cut the frost blanket according to the size of the plant, and then easily cover the plant blanket directly on the plant, lay the cover loosely over plants, or fix it with the help of hoops or frames, providing customizable protection
- Cold & Wind Protection: Shield delicate plants from wintry chills and harsh winds, safeguarding them from frost damage. Regulate sunlight exposure to prevent overheating, maintaining optimal growth conditions. Maintain stable soil temperatures
- Optimize Performance: Deploy the covers before sunset to harness residual warmth from the soil. Once morning temperatures rise above freezing, remove the covers to permit sunlight warming. Wet covers should be dried before reuse
Frost protection and winter survival are different problems
This distinction prevents many disappointing results:
- Protecting flowers for one cold night: Use a temporary cover or move a container to shelter.
- Keeping the plant alive until spring: Protect the crown and shallow roots from drying, waterlogging, repeated freezing and thawing, and extreme cold.
A light frost can turn flowers and foliage brown or black while the crown beneath the soil remains alive. Damaged top growth does not automatically mean the mum is dead. Conversely, a plant can look attractive after a mild frost and still fail later because its roots freeze, dry out, or remain in saturated soil.
There is no single temperature that guarantees survival. Frost injury depends on how long temperatures remain low, wind exposure, the plant’s acclimation, cultivar, root establishment, soil moisture, container size, and the microclimate around the plant. The USDA Plant Hardiness Zone Map is based on average annual extreme minimum temperatures from 1991–2020, so it is a useful guide rather than a promise that a particular winter will be safe. See the USDA Plant Hardiness Zone Map explanation.
What to do before a light overnight frost
- Move potted mums if possible. Place them close to the house, in a shed, or in an unheated garage for the night. Avoid a heated room if the plant can remain in a cool, protected location.
- Cover outdoor mums before temperatures fall. Use frost cloth, a dry sheet, blanket, burlap, or another breathable fabric. A frost cloth plant cover is a practical option for temporary protection.
- Cover the entire plant to the ground. The cover works by trapping some heat radiating from the soil. Secure the edges with stones, landscape pins, or other weights so wind cannot lift it.
- Keep the cover from crushing the foliage when practical. For a large plant, support hoops can create an air gap. The cover does not need to be airtight.
- Remove or ventilate the cover after temperatures rise. Fabric covers can remain briefly in cool weather, but remove temporary coverings once conditions warm and sunlight reaches the plant. Heavy materials can reduce light and cause overheating.
Commercial frost cloth and floating row cover transmit light and air while providing some frost protection. The amount of protection varies with the material and its weight. Heavier fabric may provide more insulation, but it can also block more light and become too warm if left in place during sunny weather. Colorado State University Extension’s frost-protection guidance explains why covers are most useful during marginal, short-duration frost events.
A sheet or blanket can work for a single night, but it should be dry and breathable. Do not allow plastic or synthetic material to rest directly on the leaves. If plastic is used as an outer layer, support it above the plant and remove or vent it as soon as temperatures rise. A temporary cover is not a dependable solution for a prolonged or severe freeze.
Rank #2
- More Larger Sizes Rectangular Plant Covers Freeze Protection: The Garutom frost plant covers are available in three sizes (8 ft x 24 ft, 10 ft x 33 ft, 10 ft x 50 ft), you can choose the size you need most. The plant blanket can be easily cut with scissors to fit over whatever you want
- Lightweight and Durable Frost cloth: The Garutom Plant Cover is made of breathable, lightweight, durable, anti-UV 1.1 oz./sq.yd. polypropylene non-woven fabric that transmits 85% of available light, which is enough to keep heat in while protecting against harsh weather, bugs, animals, and birds
- Effective Ways to Winterize Your Garden & Outdoor Plants:The Garutom Row Cover is an ideal tool for extending the growing season into early spring and late fall, perfect for fruit trees, raised bed vegetables, greenhouse and shrub pot plants. The garden cover can not only effectively protect against frost, freeze, rain, snow, wind, and low temperatures in winter, but can also protect your plants from strong sunlight, insects and birds in spring and summer
- How to Use the Plant Blanket: The Garutom Plant Cover is easy to DIY, you can put it directly and loosely on the plants with stones, soil, or staples. You can also support the row covers with hoops, leaving enough space for vegetables, flower seeds, or plants to breathe and grow well. We have three sizes to choose from, so you can DIY what you want or use it for multiple purposes
- Satisfaction Customer Service & Best Price: If you are not satisfied with your purchased plant cover, please feel free to contact me, we will do our best to provide excellent customer service support. Just give it a try and enjoy your shopping experience here
How to prepare garden mums planted in the ground
1. Check the site and improve drainage
Mums prefer evenly moist but well-drained soil. Winter wetness is especially dangerous because waterlogged soil can damage roots and the crown, particularly when it repeatedly freezes and thaws. Do not place a mum in a low area where water collects. If the planting site stays wet, correcting drainage is more important than adding a thick layer of protective material.
2. Water during dry fall weather
Newly planted mums have relatively shallow roots and can dry out before winter. If the soil is dry, water deeply around the root zone. Do not keep watering on a fixed schedule when the soil is already wet, and do not leave the crown sitting in saturated soil. Drought stress going into winter reduces the plant’s ability to withstand cold.
The University of Illinois Extension discusses both inadequate root establishment and moisture problems in its explanation of why fall mums often fail to return.
Recommended Free Tools
3. Wait until the soil begins to freeze before applying winter mulch
Spread approximately 3–4 inches of loose organic material such as straw, shredded leaves, or suitable wood chips around the plant after the soil begins to freeze. You can use straw mulch for winter or another organic garden mulch that is available in your area.
Mulch is intended to moderate soil-temperature swings and reduce frost heaving around the shallow root system. It is not meant to create a permanently wet blanket against the crown. Keep mulch loose and avoid packing it tightly around the stem base. Applying it too early, while the soil is warm and wet, can encourage moisture-related problems and may provide shelter for pests.
4. Leave the old stems standing through winter
There are two commonly recommended approaches. Some extension guidance recommends leaving dormant top growth in place as an additional protective layer. Other local recommendations advise cutting plants back after a hard frost and covering the crown lightly with mulch or evergreen branches.
Rank #3
- ALL-SEASON PLANT PROTECTION - Safeguard your plants through the harsh winters with our breathable Plant Frost Cover, designed to shield against frost, freezing temperatures, snow, and harsh winds. Extend your growing season into the colder months while ensuring your plants thrive year-round.
- PROMOTES HEALTHY GROWTH - Our frost cover acts as an insulation layer, creating a microclimate that keeps plants warmer in cold weather. This helps prevent frost damage and promotes healthier growth, giving your plants a head start in the growing season and accelerating germination.
- BREATHABLE & PERMEABLE DESIGN - Engineered to allow essential light, air, and water to penetrate while keeping out the cold. Your plants receive the necessary nutrients for growth without being smothered, making it ideal for delicate seedlings and established plants alike.
- UV SUN SCORCH & WIND PROTECTION - Not just for the cold, this cover also offers UV protection to prevent sunburn scorching during unexpected winter sun exposure, while also serving as an effective windbreaker, reducing plant stress caused by strong winds.
- DURABLE & EASY TO USE - Made from high-quality, reusable materials, our Plant Frost Cover is easy to install and remove, making seasonal transitions simple. Its durable construction ensures long-lasting protection, giving you peace of mind through multiple winters.
These approaches differ mainly in timing and regional practice. A conservative general approach is to leave the dead stems standing through winter, then remove them in spring once new shoots are visible. The stems can help identify the plant and provide some protection from wind and temperature swings. If your local extension service recommends cutting back after a hard frost, that advice may be better suited to your climate.
5. Reassess in spring—not immediately after frost
Do not declare the mum dead because the flowers have browned. Wait for consistent spring conditions and look for new shoots emerging from the base. Once new growth is clearly visible, cut away dead stems and resume normal care. If you want a bushier plant, pinch or trim new growth earlier in the growing season, before flower buds form.
How to protect mums in containers
Container mums are more vulnerable than mums planted in the ground. The root ball is surrounded by air and can freeze much faster than the soil around an in-ground plant. A container may also dry out more quickly during cold, windy weather.
Best option: move the pot to a protected location
Before a hard freeze, move the container to an unheated garage, basement, greenhouse, cold frame, or other cool location that stays above freezing. A cool, dormant environment is generally preferable to a warm room with dry air and insufficient light.
Check the soil periodically. Penn State Extension recommends watering potted mums when the upper 2–3 inches of soil have dried, rather than keeping the pot constantly wet. The exact interval depends on the container, temperature, and ventilation.
Rank #4
- THICKER MATERIAL: Our plant freeze protection cover is made of UV stabilized polypropylene. Upgraded thicker 0.9oz./sq.yard lightweight but durable. Soft plant covers are friendly and no harm to your plants. Breathable non-woven fabric allow light, air go through the frost cloths and reach the plants.
- 6.5FTx16FT PLANT COVER: The frost covers for outdoor plants measures 6.5FTx16FT, and this plant covers for winter covers area up to 104 square feet. The freeze plant protection cover is easily trimmed to different size to fulfill different need. After cold weather ends, you can easily fold and store this winter floating row cover.
- WINTER PROTECTION: Frost blankets for outdoor plants protect your plants and crops from harsh weather such as low tem, cold wind, frost, snow, hail, sleet in winter,early spring and late fall. Warm support for young transplants, seedling and extend the growing season.
- SHADE COVER FROM SUN: The outdoor plant cover is not only for winter freeze protection, you can also use it as garden shade cloth cover or plant shade cover from sun, block certain proportion of sunlight and heat. Additionally, it can be used as a screen barrier to prevent birds, small animals and insects during the growth
- EASY-TO-USE: Secured this plant frost cover with soils, stakes, staples, blocks, stones, sticks or garden hoops to provide sufficient space for your vegetables, flowers, crops and small trees such as tomato, strawberry, blueberry, schinus, kale, citrus, grass, rised bed and potted plants.
If the pot must remain outdoors
- Place the container on the ground rather than on an exposed stand or porch ledge.
- Group it with other containers to reduce wind exposure.
- Protect the pot as well as the foliage; insulating only the leaves leaves the root ball vulnerable.
- Use breathable fabric around the plant and a suitable insulating material around the container.
- Keep covers from resting heavily against the plant.
A plant pot insulation wrap can provide supplementary protection when moving the pot is impossible, but it is not equivalent to placing the container in an above-freezing sheltered location. The colder and longer the freeze, the less reliable outdoor container protection becomes.
For more detailed guidance on protecting container plants during freezing weather, consult Oregon State University Extension’s recommendations.
Should you cover a mum after every frost?
Usually, no. If a hardy garden mum is established in the ground, an occasional light frost may damage the flowers but may not threaten the crown. Repeatedly covering and uncovering plants is most useful when you are trying to preserve flowers during a short spell of marginal temperatures.
Cover a plant when:
- A frost is expected soon after planting.
- The plant is a recently purchased fall mum with little time to establish roots.
- Flowers are still being displayed and a light overnight frost is forecast.
- The plant is in an exposed location or near the edge of its expected hardiness range.
Move a container or use more substantial shelter when a hard freeze or several freezing nights are expected. Do not depend on a fabric cover to defeat a deep or prolonged freeze.
Why mums fail to return in spring
When a mum does not come back, the cause is often one of several overlapping problems:
- It was not a reliably hardy type. Florist mums and greenhouse-forced plants may not have the genetics or growing conditions needed for dependable outdoor survival.
- It was planted too late. A fall mum purchased in full bloom may have only a short time to produce roots before the ground freezes. Spring planting gives a garden mum more time to establish.
- The root system froze. Containers and shallow roots are especially exposed to rapid temperature changes.
- The soil stayed wet. Poor drainage can cause root or crown injury during winter.
- The plant entered winter dry. Drought-stressed roots are less resilient.
- Freeze-thaw cycles caused heaving. Repeated warming and freezing can disturb shallow roots and expose them to drying air.
- The winter was unusually severe. A plant near the edge of its hardiness range may survive most years but fail during an exceptional cold event.
Planting hardy mums in spring, choosing a well-drained site, watering during dry spells, and mulching at the appropriate time generally gives the plant better odds than buying a fully flowering plant late in fall and expecting it to overwinter without preparation.
Best Value
- Comprehensive Winter Protection for Your Garden: Our outdoor plant covers provide complete freeze protection for strawberries, vegetables, tomatoes, fruit trees, citrus plants, shrubs, and potted plants throughout the winter. This frost cloth plant freeze protection shields delicate plants from sudden temperature drops, frost, and strong winds, ensuring they survive harsh winter conditions. Ideal for those looking for frost blankets for outdoor plants and reliable plant freeze protection covers.
- Lightweight and Breathable Floating Row Cover: Made from 0.9 oz/sq non-woven, breathable frost fabric for plants, our frost row cover allows essential air, moisture, and sunlight to reach your plants. This frost cover helps regulate sunlight exposure to prevent overheating and maintain stable soil temperatures, ensuring optimal growing conditions, this planket frost protection plant cover guarantees healthy growth.
- Reusable Freeze Cloth for Outdoor Plants: No need to remove and replace the frost cloths for outdoor plants daily. Easily cut to fit various sizes and shapes, wrap the plant protector for winter around trees and shrubs, or lay it directly over potted plants, flowers, vegetables, raised beds, or grow tunnels. This garden bed row cover can be secured with stones, stakes, or supported with garden hoops or frames.
- Versatile Floating Row Cover: Our winter plant covers freeze protection products offer multiple functions, including garden beds frost protection, snow resistance, animal barriers, insect barriers, and shade cover. The plant frost protection covers shield your plants from frost, wind, snow, ice, and freezing temperatures in late fall and winter. In spring and summer, these frost protection for outdoor plants defend your garden against strong sunlight, insects, and birds.
- Extended Growing Season: Frost blankets for plants and plant covers for winter for vegetables frost protection allow gardeners to plant earlier in the spring or extend their growing season into the winter. The garden covers for raised beds helps retain warmth during cold nights, promoting faster seed germination and seedling growth, leading to earlier harvests and increased yields.
A simple decision guide
| Situation | Best immediate action | What to expect |
|---|---|---|
| One light overnight frost, mum in the ground | Cover with frost cloth or a dry sheet overnight; secure the edges and uncover when temperatures rise. | Flowers may still suffer some damage, but the crown may remain healthy. |
| One light overnight frost, mum in a pot | Move it near the house, into a shed, or into an unheated garage if practical. | Container roots need more protection than in-ground roots. |
| Hard freeze approaching, mum in a pot | Move it to a cool location that stays above freezing. | Outdoor wrapping is supplementary and may not prevent root damage. |
| Established garden mum in the ground | Check moisture and drainage, leave stems standing, and add 3–4 inches of loose mulch after the soil begins to freeze. | Survival depends on cultivar, climate, site, and winter severity. |
| Recently purchased fall mum | Protect it more cautiously and treat its winter survival as uncertain. | Late planting means the root system may be too small to withstand winter. |
| Unidentified mum | Check the label for “hardy mum” or “garden mum.” | Do not assume a decorative or florist mum will return. |
Common mistakes to avoid
- Using a cover as a guarantee: Covers help with short, mild frost events; they are not a substitute for hardiness or a protected location during severe weather.
- Leaving plastic directly on foliage: It can transfer cold to leaves, collect condensation, and overheat the plant when sunlight returns.
- Applying mulch too early or too tightly: Wait until the soil begins to freeze and keep the material loose around—not packed against—the crown.
- Overwatering in winter: Cold, wet soil can be more damaging than moderately dry soil.
- Pruning immediately after frost: Brown foliage is not proof that the crown is dead. Leave protective stems until spring unless local guidance says otherwise.
- Ignoring the container: Wrapping the foliage does little if the exposed root ball freezes.
Spring recovery checklist
- Wait until the danger of severe freezes has passed and new shoots begin appearing at the base.
- Remove dead stems above the new growth.
- Clear away excessive or compacted mulch gradually, leaving enough to suppress weeds and conserve moisture.
- Water when the soil is dry, but correct drainage problems before increasing irrigation.
- Begin normal feeding and growth management only after the plant is actively growing.
- Pinch new shoots earlier in the season if you want a fuller, more compact plant.
If no shoots appear after the plant has had suitable spring conditions, inspect the crown and roots. A soft, rotted crown suggests excess moisture; a completely dry or brittle crown may indicate winter desiccation or freezing injury.
Frequently Asked Questions
Can mums survive a light frost?
Often, yes. A light frost may brown flowers and foliage without killing the crown or roots, particularly on an established hardy garden mum. Cover the plant overnight if you want to preserve blooms, but do not assume that surviving one frost means it will survive the entire winter.
Will mums come back every year?
Hardy or garden mums can return as perennials in suitable climates, but florist mums and many late-season decorative mums are less dependable. Survival also depends on planting date, drainage, moisture, root establishment, cultivar, and winter severity.
Should I cut back mums before winter?
A conservative approach is to leave dead stems standing through winter and cut them back after new shoots appear in spring. Some regional recommendations call for cutting back after a hard frost and adding light mulch, so local extension advice should take priority where it differs.
What is the best mulch for overwintering mums?
Loose straw, shredded leaves, or suitable organic garden mulch can help moderate soil temperatures and reduce frost heaving. Apply about 3–4 inches after the soil begins to freeze, and do not pack mulch tightly against the crown.
Can potted mums stay outside over winter?
They are more vulnerable than in-ground mums because the containerized root ball freezes rapidly. Move the pot to a cool location that stays above freezing whenever possible. If it must remain outdoors, place it on the ground, group it with other pots, and insulate both the container and foliage, recognizing that this is not a guarantee.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
The Bottom Line
The best protection depends on the risk. For one light frost, cover an outdoor mum overnight or move a container to shelter. For winter, focus on the crown and roots: use a well-drained site, water during dry fall weather, leave stems standing, and apply 3–4 inches of loose mulch after the ground begins to freeze. Most importantly, confirm that the plant is a hardy garden mum—because no cover can make every florist or late-planted fall mum reliably perennial.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
