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.
What temperature is too low 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.
The Effects of Temperature on Succulents and Cacti
Succulents and cacti prefer to reside in the “sweet spot” of temperature, just as is the case with sunlight exposure. These hardy plants can suffer irreparable harm from either extreme of the temperature range, so it’s important to monitor their health and adjust the environment as necessary.
Succulents and cacti thrive most effectively in temperatures between 40 and 80 °F. Outside of this range, little temperature swings are tolerated, but swings of five or more can result in permanent harm. Even more intriguing is the fact that temperatures that are on the edge of the bearable range (about 40°F or 80°F) can operate as “stressors,” positively affecting the plant and encouraging the expression of more vivid hues.
Succulents and cacti should ideally be kept above freezing during the winter to prevent frost damage. While more tropical types like euphorbia and lithops demand minimum temperatures of 50 to 60 degrees Fahrenheit, other cultivars are actually frost hardy and prefer cooler overnight temperatures of 30 to 40 degrees. Searching for “ideal temperature for insert plant name here” on Google is currently the quickest approach to find out what temps are optimal for your plants. Each plant product page will eventually feature our own documentation.
Extreme Cold and Extreme Hot
Succulents and cactus can, you guessed it, freeze when exposed to freezing or below-zero weather! The water that has frozen inside the plant’s cells expands as it thaws, killing the cells by rupturing them. When the plant finally thaws out, the damaged regions will start to decay or scar permanently—a symptom that could take a few days to manifest. To stop the rot from spreading, the best course of action in this circumstance is to remove the afflicted region with a clean razor blade.
It is preferable to relocate your collection under a patio cover or inside of your home while the freezing conditions last in order to prevent damage from frost and freezing temperatures temporarily. A “frost blanket,” which is just a thin piece of fabric designed to protect plants from cold, can also be used to cover your plants. Plants should be taken indoors for the winter or placed in a sunroom or greenhouse with plenty of natural light in regions of the country where cold temperatures last for months at a time (essentially everywhere else save California).
However, heated temperatures can also do harm if they are not controlled, so they are not the only bad guys in this tale. A variety of things can happen to your plants when it becomes too hot (90 degrees Fahrenheit and above), especially when combined with full sun exposure. For example, leaves may shrivel and/or burn, water inside plant cells may steam and explode, and root systems may become fried.
Because soil is not a very good conductor of heat or cold, succulents planted in the ground with developed root systems can withstand high heat and cold more better than those planted in containers. On the other hand, containers easily conduct heat and cold, focusing such extremes on the roots of the plants.
There are always exceptions to the norm, just like there are in everything else in life. Succulents can withstand temperatures well below freezing and temps as high as 100 degrees. Drive about and observe what sorts of succulents your neighbors are successfully cultivating to find out what varieties work best in your specific climate.
Moisture and Extreme Temperatures = Bad News
Extreme heat and dampness are among the most troublesome environmental conditions. You should never put your plants in a situation where they are both hot and damp or cold and wet. Whether in the ground or in containers, plants that are grown in dry soil perform far better than those that are not. The water in the soil might start to steam in exceptionally hot weather, thus “cooking” your plants. Water can obviously freeze in freezing or subfreezing temperatures, harming the root system and producing rot. If you absolutely must water your plants when extremely high temperatures are predicted, try to do so as early as possible, ideally before 7 a.m.
The TLDR (too long, didn’t read) Summary
Average temperatures are much preferable to harsh ones for succulents. Frost damage can occur in cold conditions, whereas scorching and atrophy can occur in hot temperatures. Paying attention to what your plants are saying is the simplest method to make sure they are content. Bring them indoors or wrap them in a frost blanket if they are suffering from frost damage. Move them to a sheltered spot or cover them with shade cloth if they are scorching or wilting.
Do succulents need to be kept in the cold?
The fact that many succulents can survive outside year-round, even in snowy climes, surprises a lot of people. We divide succulents into two categories—”hardy” and “soft”—to make it easier for you to choose the best one for your area.
- Hardy succulents: Tolerate frost and can endure temperatures below zero outside. They are perfect for outdoor gardening all year long. Hardy succulents actually thrive outside more than they do inside.
- Not frost-tolerant are soft types. Before temperatures drop below freezing at night, these types must be brought inside. On the other hand, when the warm, sunny weather returns, they are glad to go outside once more.
the USDA Grow Zone finder (based on minimum winter temperature). You may find a plant’s “Cold Hardiness” on the description of each one in our online catalog. If your zone number is equal to or higher than the plant’s, that variety can endure the entire year outdoors in your environment. The plant will need to be brought indoors before the fall temperatures start to drop if you live in a zone with a lower number than the Cold Hardiness of the plant.
Most of our plants are also sent with name tags that state the lowest temperature they can withstand for easy reference.
Zones 4 and higher are suitable for Sempervivum heuffelii’s growth, however zones 3 and lower are not.
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.
Do succulents require heat?
Many of the most popular and stunning succulents will need to be taken indoors for the winter unless you are fortunate enough to live in a place where it does not get below freezing. Although a greenhouse is ideal, few gardeners have access to one. Fortunately, it’s simple to overwinter most succulents inside.
There is a vast variety of various plants classified as succulents, some of which have very particular requirements. But the advice provided here will help most widely cultivated succulents survive the winter.
When grown inside, succulents frequently develop a habit of being stretched out and lanky, producing weak and unsightly plants by spring. When care for succulents indoors throughout the winter, light, water, and temperature are three crucial considerations that can help to reduce this.
Light is Critical
Light is the main component in succulent survival during the winter. Succulents will extend if there is insufficient light in an effort to get closer to the source. In general, succulents want full sun. Although it can be challenging to do so inside, expose them to as much direct sunshine as you can. The ideal window is one that faces south, though east or west windows can also be used.
If there is inadequate natural light, fluorescent lights may be employed. It’s crucial to keep the plants between the bulbs and 1 to 2 inches away from them. Over a distance of 3 inches, fluorescent light is practically useless to plants. For plant growth, incandescent lights emit the wrong spectrum of light and becoming too hot.
Succulents Need Little Water During the Winter
It is always preferable for succulents to be too dry than too moist. This is particularly true in the winter, when plants experience less-than-ideal lighting conditions and below-average temperatures. During the winter, keep your succulents on the dry side. Just enough water should be provided to prevent plant shriveling. You might just need to water once every 10 to 14 days in a cold area.
Keep the plant itself dry at all times, especially rosette plants like Echeverias. The plant will swiftly decay and become mush as water will collect in the rosette’s center. Keep in mind that keeping a succulent moist will destroy it quickly!
Cool Temperatures are Good
The majority of succulents do not require extra warmth during the cold. It’s crucial to prevent them from freezing. The ideal temperature range is between 45 and 55 degrees Fahrenheit. The plants will remain in a semi-dormant state if kept cool. With the lower light intensity indoors during the winter, a warm environment fosters the growth of the plants, resulting in lanky plants.
No Fertilizer Needed
During the autumn and winter, succulents do not require any fertilizer. Instead of encouraging the plants to develop, you want to maintain them alive.
I’ve had great luck using these methods to overwinter plants like Echeveria, tender Sedum, Aeonium, Agave, Aloe, Crassula, Graptoveria, Kalanchoe, Faucaria, and Senecio.
The plants may endure the winter in a semi-dormant state with little stretching if you keep them sunny, dry, and cool. The succulents can be put back outside for a summer of sunbathing once the weather is no longer frosty.
Where should I place succulent plants for greatest results?
Succulents thrive in hot, arid conditions and don’t mind a little neglect due to their unique capacity to store water. They are therefore ideally suited to growing indoors and are the perfect choice for anyone looking for low-maintenance houseplants. Follow these instructions for successful plant care if you’re choosing succulents for the first time.
Select a succulent that will thrive in your indoor environment.
The majority of succulents need direct sunshine, however if your home only has a shady area, choose low light-tolerant plants like mother-in-tongue. law’s A trailing variety, like string of bananas, is an excellent option if you intend to grow your succulent in a hanging planter. To learn about your succulents’ requirements for sunlight, size, and spread, always read the plant labels.
Give the plants a good draining potting material.
You should repot your succulent as soon as you get it home since nurseries always plant their succulents in soil that is overly rich and holds too much moisture. A coarse potting mix with sufficient drainage and aeration is a good place to start. You can use an African violet mix or unique cactus and succulent mixtures that you can purchase at the nursery. Add perlite or pumice to the cactus or African violet mix (up to 50% of the total potting mix, depending on your particular succulent’s moisture requirements) to further increase drainage and prevent compaction. To make sure the mixture is moist throughout, always moisten it before using.
Decide on a container.
When repotting, use a container that is at least 1 to 2 inches bigger than the nursery container and has a drainage hole. Avoid using glass containers (such mason jars or terrariums) for long-term potting since they prevent roots from breathing and over time may result in root rot. Place your plant inside the container and backfill with extra pre-moistened potting mix after filling the bottom one-third of the container with pre-moistened potting mix.
Put the succulent plant in a pot somewhere sunny.
Try to arrange your succulents close to a south or east-facing window because most succulents need at least six hours of sun each day. Insufficient sunlight may cause your succulents to become spindly or to extend toward the light.
Between waterings, allow the potting mix to dry out.
Overwatering succulents is the most common error people make with them. Watering more deeply but less frequently is preferable. Before the next watering, completely saturate the potting mix (while making sure the water drains out of the drainage hole properly). The plant can finally perish if the potting soil is left moist every day.
Succulents should be fertilized at least once a year.
Fertilizer works best for plants in the spring (when the days lengthen and new growth starts) and again in the late summer. Use a water-soluble, balanced fertilizer (such as 8-8-8 or 10-10-10) that has been diluted to half the strength indicated on the container. Since succulents are semi-dormant in the winter, there is no need to nourish them. Because they are not actively growing, they do not require the nutrient boost.