The season for succulents doesn’t end with summer. There are many of these lovely plants that can withstand the extreme cold of winter. Plant them outside for color all year long. They can withstand temperatures below zero as long as they have full sun and dry soil.
How resilient are succulents?
In most places, hardy succulents make it simple to develop vibrant rosettes and lush groundcover outdoors. These plants can withstand cold down to at least 0F (zone 7); the majority can withstand -20F. (zone 5). All of them are drought-tolerant, low-maintenance, quick-growing plants that enhance rock gardens, groundcover, container arrangements, living walls, and much more with brilliant colors & winter interest!
CARE
- Light: The majority of hardy succulents need a lot of light to develop, therefore try to grow them outdoors in full to partial sun, with more shade when the temperature rises beyond 85F. Use dedicated grow lights or put them on a sunny window sill to allow them to thrive indoors, however you could still notice that they start to fade to green and swell. Succulents that have recently been delivered in a box may take up to two weeks to acclimate to full outside sun. More details
- Like the majority of succulents, hardy variants thrive in rocky, well-draining soil. Most garden centers carry potting soil for succulents and cacti, or you can create your own sandy loam by adding sand to your own soil mixture. None of them need fertilizer, but a springtime application of a slow-release, low-nitrogen (5-10-10) fertilizer will promote quicker development.
- Water: A cycle of thorough soaking and time for the soil to completely dry out will promote the growth of strong roots. To grow roots, young plants will require more regular watering, however in the winter, less water is preferable. Use a pot with a drainage hole if you’re planting in a container. More details
- Hardiness: The majority of the cultivars on this list can withstand a deep freeze of at least -20F. (zone 5). Many Sedum species, including Sempervivum heuffelii, can withstand temperatures as low as -30F. (zone 4). Hardy succulents will be protected from winter exposure by a layer of snow, but in areas without snow, gardeners can use clear coverings and bring potted succulents under cover to avoid standing water and decay. More details
- No propagation labor is required for any of these types, although each type’s description in its appropriate category includes detailed instructions on how to replicate and transplant it.
NOTES FROM THE NURSERY
Because hardy succulents are accustomed to severe alpine environments, it is not unexpected that they are such hardy garden growth. They were placed on rooftops in the Middle Ages to fight off lightning and are now regarded as “Old World Treasures.” They are still present on rooftops today in the form of ecologically sound green roofs since they thrive in shallow soil and require little to no upkeep.
No of your level of gardening expertise, hardy succulents make wonderful landscaping and container plants. Consider placing them around stepping stones, in rock walls, and other hidden spots throughout the garden.
How resistant to cold are succulents?
Succulents are highly hardy and can withstand situations that other plants find difficult. Succulents can tolerate a wide range of temperatures, but some are more hardy than others.
We will attempt to determine what is effective for the majority of succulents as there are many diverse plant genera, species, and hybrids that belong under the umbrella word “succulent.”
What is the lowest temperature that most succulents can withstand and are most succulents cold-hardy?
Most succulents can withstand chilly temperatures but not frost. Succulents can withstand temperatures as low as 0.5C (32.9F), but once the frost begins to form at the freezing point (0C or 32F), they will begin to suffer from frost burns.
Succulents’ internal water will start to freeze in cold conditions. Even while most succulents can survive minor frosts, once the temperature drops below -2C (28.4F), they can soon freeze and turn to mush.
There are some succulents (Sempervivum, Agave, a few Sedum species, and Orostachys, for example) that can withstand very severe frosts, hence this rule does not apply to all succulents. When it gets cold outside, the vast majority of succulents do better protected indoors or in a greenhouse.
Succulents are grown outdoors all year long in our nursery (west of Sydney, Australia). Even while it can get rather chilly at night and there may be some frost, it never sticks around for very long as temperatures rarely dip below -2C/28.4F.
Over the winter, we keep our more delicate and valuable succulents in a greenhouse, although this is more due to rain than anything else because some succulents can become infected with fungal diseases, mildew, or rot if they receive too much rain.
On the majority of succulents, cold also has some fascinating impacts. When temps drop below 10C, the richest and brightest colors begin to appear (50F). Succulents begin to grow a little more compactly and colorfully as a result of the chill. You can find some incredible photos of this transition by searching #wintersucculents on Instagram, other social media, or your preferred search engine.
If the plants are also in a sunny location, the colors will be at their best. Here are some images of plants that change color during the winter. During the warmer months, these are often much paler and lack the crimson tips and margins.
Succulents are able to spend the majority of the year outside in warm areas like ours. Succulents can still live outside with the protection of a frost cloth in slightly colder locations where frosts to approximately -2C (28.4F) are rather common throughout the winter and the occasional cover of snow falls (but doesn’t remain for long). This is a very thin, white linen that can be spread over heavy pots or succulent plants in the garden if frost is predicted.
Only a select few succulents can withstand the rigors of winter in colder locations. Agave, Sempervivum, a few varieties of Sedum, and Orostachys are among them. While some sedum species, typically the chunkier ones like Sedum Clavatum, will freeze, the smaller leaved forms should be resistant to winter.
The easiest way to cultivate succulents in a cold area is to keep them in pots so you can transfer them indoors or into a greenhouse when the weather turns too chilly. Because of the lack of intense light and general dislike of being indoors, most succulents may start to stretch, lose leaves, and decay.
It is advisable to locate the window with the most sunlight streaming through it. If you have a collection of unusual plants, you might want to consider investing in a nice plant growth light that mimics the sun’s beams. This will prevent the succulents from becoming too long.
Succulents can stay outside until the temperature drops below freezing. However, if you have pricey succulents or are concerned about your plants, consider protecting them for peace of mind.
Can succulents survive the cold outdoors?
Yes, it is the answer. Although certain succulents can withstand frost, they are frequently thought of as drought-tolerant plants. They flourish in chilly, snowy conditions, and the extreme cold even brings out their magnificent, vivid colors. They are referred to as “Hard Succulents.” Sempervivum, Sedum, and Euphorbias genera contain some of the most hardy succulents. You may plant such succulents outside all year round because the majority of them can withstand temperatures as low as -20F (Hardiness Zone 5).
“Soft Succulents” are another group of succulents that are more susceptible to frost. When the weather drops below freezing, they must be winterized inside.
How cold should it be for succulents?
Whether a succulent is a soft or hard succulent determines what temperature it can withstand.
Anything warmer than 32 degrees F will be enjoyable for soft succulents. preferably over 40 degrees.
These plants cannot endure colder than freezing temperatures. Their hefty, thick leaves, which serve as water reservoirs, will freeze and destroy the plant.
Succulents that can withstand the cold can sustain -20 F. The best it can manage is a zone 4 to 5, and let me tell you, that is very impressive.
You must keep in mind that even if they can withstand temperatures below zero, they still like dry soil. That remains constant.
The majority of winters in the contiguous US will not only be dry but also wet and snowy.
Succulents can they live outside?
Succulents are drought-tolerant plants because they can retain water in their large, irregularly shaped leaves. Succulents have a broad variety of eye-catching shapes and textures, which provide any landscape aesthetic interest. Can succulents live outside? is an often asked question. The quick response is “yes”! Growing succulents outdoors is an excellent alternative because they do well there and can withstand some neglect. They also do well in sunny areas with warm, dry weather.
Succulents can be grown in the ground, in pots, or hidden in unexpected planting locations. Take the uncertainty out of caring for these wonderful conversation pieces with stunning foliage by reading our suggestions for growing succulents outside.
For the winter, should I move my succulents inside?
Each summer, soft succulents can enjoy some sunshine outside, but they must return indoors before it becomes too cold. Pay attention to the light, air, soil, and water conditions as you bring your plants indoors for the winter.
Light
Naturally, indoor places receive less sunlight, especially during the winter. Sun-loving succulents should be placed close to a sunny window. To stop the pots from fading and straining, rotate them frequently. Add a grow light to rooms that don’t get enough natural light, or try indoor succulent varieties. For rooms with particularly low light levels, we suggest Haworthia, Jade, and Gasteria.
I have succulents, when should I bring them inside?
Again, a lot of this depends on where you reside and what you’re growing. You should generally bring your succulents inside before the first frost. In the US, this occurs during the end of September for many people.
Naturally, if you are raising cold-tolerant succulents, they can spend the entire winter outside.
Knowing your local growth zone is crucial. You should at the very least be aware of your region’s typical low temperature. For instance, we were in Zone 5 when I lived in Utah. The majority of my succulents at the time were Zone 9 plants.
All succulents with a Zone rating higher than 5 must spend the winter indoors since they cannot withstand the cold.
Since I currently reside in a Zone 9 region near Phoenix, most of my succulent plants perform well year-round outside. Only a few succulents classified as Zone 10 or 11 will require spending the winter indoors.
Therefore, begin by classifying your succulents. Afterward, ascertain which growth zone you are in. Look how how the two contrast! Plants that are rated higher than where you reside should be brought inside.
You can use this video to decide whether you should bring your succulents indoors for the winter.
Can succulents recover after a freeze?
Can a frozen plant still be saved? This truly depends on the kind of plant and how long it was exposed to the cold. On all save the most tropical plants, light freezes are typically something that a plant can recover from.
Remove damaged plant material from woody plants in the spring. In the late winter, you can detect which stems are dead by scratching the bark. The tissue is still alive if the substance is green below. They will lose their leaves as a result of the freezing, but they normally re-leaf in the spring. After all threat of frost has passed, maintain the plants’ moisture and apply a mild fertilizer.
More delicate plants won’t be able to endure the freezing damage and will turn into annuals. Perennial plants that have been frozen-damaged may only have little root damage, in which case you can divide the plant and replant the pieces. The ones that recovered from the root area’s cold did not deal a fatal blow.
I have succulents, when should I cover them?
“Frost tender” succulents may experience variable degrees of damage, depending on how long the temperature is below freezing (32 degrees F). A sensitive plant’s cells expand, burst, and transform its leaves to mush when liquid inside them freezes. In a “light frost,” only the tips of the leaves may be harmed (“frost burn”). A “hard frost” is characterized by sustained temperatures below freezing, which can cause entire plants to die. Typically, succulents do not recover from roots.
Ones that are among the most fragile succulents include crassulas, aeoniums, euphorbias, and kalanchoes. Some succulents, in particular, have an inbuilt antifreeze that allows them to endure temperatures considerably below 32 degrees Fahrenheit—in fact, below zero.
Are your outdoor succulents at risk over the winter? Depending on where you reside, Please refer to “Cold Weather Care for Outdoor Succulents, By Region.”
Your area is frost-free (lucky you!) if…
This soft-leaved agave in my garden is the canary in the mineshaft when it comes to cold. Many succulents may survive a brief cold (less than an hour), but Agave attenuata’s leaf tips immediately reveal damage.
Although ugly, this damage rarely results in death. See how each leaf’s healthy green portion is? Cut each leaf to a point using scissors to remove the tissue-paper-like frozen tips. The harm won’t be very evident when you’re finished. Those shorter, clipped leaves will be buried by new growth during the summer. (Note: Such damage is comparable to scorching brought on by excessive sun and heat, which is common of desert conditions, and by wildfire, which, believe it or not, does occur.)
What about a succulent or agave that only suffers damage from frost on the tips of its leaves? Don’t even try trimming them. In a few months, it will shed those oldest leaves nevertheless.
areas with sporadic, light frosts (like Southern California’s interior):
If there is a “frost advisory” for your area, keep an eye on the weather forecast, and before it gets dark, go outdoors and cover your sensitive succulents. After midnight, frost is more common, and temperatures increase colder as dawn approaches. Warm air is lighter than cold air, which travels down hills and gathers in low areas. Succulents in swales are therefore more vulnerable than those on top of berms. You may have heard that Christmas lights slightly increase the temperature. Yes, if they are the traditional variety. LEDs in current use don’t produce heat. You should be concerned about succulents that are exposed to the elements and have nothing over them. I occasionally lean over a succulent and look up. It becomes draped if there aren’t any tree limbs or eaves directly above.
I reside at 1,500 feet in the foothills NE of San Diego (Zone 9b). And yes, after seeing the weather forecast on the late-night news, I have been outside at 11 p.m. in my pajamas and slippers, freezing while I place blankets on delicate plants while my husband holds a flashlight. I may leave the plants covered if several nights of frost are expected; otherwise, I take the sheets off the next morning. I fasten them with clothes pins and rocks to make sure they won’t blow off. AVOID using plastic. The plants are unable to breathe because of it.
In my yard, jades and other delicate succulents are covered in frost cloth. WATCH THE VIDEO
Why cold damages some succulents and not others
The origin of a certain plant type affects it greatly. Most succulents are native to dry, hot areas where they can store water in their leaves to survive drought. The ones that don’t freeze, however, are from dry, cold climates. See my essay, Showy Succulents for Snowy Climates, in the Wall Street Journal. The “hardies” include:
several species and cultivars of sempervivums (hens-and-chicks, above); some cactus, yuccas, and agaves (such as Agave utahensis, A. montana, and A. parryi); and lewisias from the Pacific Northwest.