Succulents are adored for their vibrant colors, low maintenance, and quirky shapes. But when it comes to cold weather, many succulent enthusiasts start to worry: How cold is too cold for succulents?
In this post, we'll uncover the temperature limits for these desert beauties and offer some tips on how to protect them when the mercury starts to drop.
1. Understanding Succulents and Their Cold Tolerance
Not all succulents are created equal when it comes to surviving the cold. Some, like Sempervivum (also known as "hens and chicks") and Sedum, are known to be cold-hardy, meaning they can tolerate freezing temperatures. Others, such as Echeveria or Aloe, hail from warmer regions and are less equipped to handle the chill.
For most soft, non-hardy succulents, anything below 40°F (4°C)starts to become dangerous. Once the temperature dips to freezing (32°F / 0°C), they’re at serious risk of damage or even death. The plant’s water-filled leaves can freeze, causing them to burst, leaving behind a mushy, unrecognizable mess.
2. How Cold-Hardy Are Your Succulents?
To know if your succulents can brave the cold, it's essential to identify their species. Here’s a quick breakdown:
● Cold-Hardy Succulents: These varieties, like Sempervivum and Sedum, can handle temperatures as low as -20°F (-28°C)! They survive the winter by going dormant, much like trees, and come back strong in spring.
● Tender Succulents: Species like Echeveria, Crassula (Jade plant), and Kalanchoe are more sensitive to cold. Temperatures below 40°F (4°C) may lead to discoloration, leaf drop, or worse—frozen plants.
Knowing what kind of succulents you have will help you prepare them for colder weather.For more details on soft and hardy succulents, check out our previous blog post, soft & hardy succulents.
You may wonder more about: Soft Succulents vs Hardy Succulents
3. The Signs of Cold Stress in Succulents
Even with precautions, succulents can still experience cold stress. If you notice the following signs, quickly move your plants to a warmer spot:
● Leaves turning brown or black: This often indicates that the plant's cells have frozen and burst.
● Soft, mushy patches: These may appear after a frost, and sadly, once this happens, the affected areas can’t be saved.
● Leaf drop: If your succulent sheds leaves suddenly, it’s likely reacting to temperatures that are too cold for comfort.
4. Protecting Your Succulents from the Cold
You don't need to be worried when the temperature starts to drop. There are ways to keep your succulents safe and healthy during winter.
● Bring Them Indoors: The easiest way to protect your succulent plants is to bring them inside before the frost hits. Place them in a bright, sunny spot, like near a south-facing window, to keep them thriving through winter.
● Use a Greenhouse: If you have a lot of succulents and space allows, a simple pop-up greenhouse can do wonders to shield them from cold winds and frost.
● Frost Cloth or Blankets: If your succulents must stay outside, cover them with frost cloth or even an old sheet during particularly cold nights. This acts as a barrier to prevent freezing.
● Elevate Potted Succulents: Potted succulents left on the ground are more susceptible to the cold. Elevating them a few inches off the ground, perhaps on a shelf or platform, can make a big difference.
If you’re facing a severe cold snap and didn’t get to your succulents in time, don’t despair. Carefully remove damaged parts and relocate the plant to a warm, sheltered area. In this way, you might be able to rescue the plants with luck!
5. Cold-Hardy Succulent Recommendations
If you live in an area with cold winters and want to avoid the hassle of moving plants indoors, consider growing these cold-tolerant succulents:
● Sempervivum Arachnoideum: Because of their hardy and resilient factors, these succulents can survive in subzero temperatures.
● Hardy Sedum: Another cold-resistant option, Sedum is perfect for ground covers and rock gardens in chilly climates,such as Sedum 'Golden Glow' and Sedum stahlii.
● Agave Parryi: A striking, cold-hardy agave that can withstand freezing temperatures.
These species can endure the frost and still look fabulous!
Final Thoughts
Thus, how cold is too cold for succulents? It depends on the succulent variety, but as a general rule, you should start taking precautions when temperatures dip below40°F (4°C). By understanding your plants’ needs and giving them a little extra care, you can keep them thriving all year round, even when winter hits.
Now it’s your turn—are your succulents ready for the cold season? Take a look at your plants and prep them for the chilly months ahead! If you’re unsure about your succulent species, this might be the perfect time to expand your collection with some cold-hardy varieties.
You may wonder: 15 Outdoor Hardy Succulents for Cold Climates
