Can Cactus Survive The Winter? (Tips For Protecting Your Cacti)

While many cacti species are adapted to the hot desert conditions, it doesn't mean that they will die when exposed to the cold winter conditions
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Cactus plants are commonly considered as desert plants. To many people, this means dry areas that record incredibly high temperatures throughout the year. However, the truth is that many deserts are not all that hot and even the ones that are, usually get quite cold at night. Therefore, it is not surprising that cactus plants can survive in cold areas as well.  This brings us to the most controversial question about these plants.

Can cactus survive winter? The simple answer to this is yes. While a majority of cactus plants are adapted to living in dry areas, they can still brighten up your indoors even during winter’s darkest days. The lowest temperature for any cactus plant depends on its species. While some species cannot tolerate temperatures below the freezing point, others can still survive in temperatures below 0oF.

Many cactus species that survive in very cold temperatures usually expel water at night to ensure the excessive water stored in their roots and stems does not freeze.

In this post, we are going to look at temperature requirements for cacti plants, how to bring them indoors for winter and give you essential tips on how to take care of your cacti during the cold season.

What are the Temperature Requirements of Cactus Plants?

Perhaps, one of the most challenging parts about growing cactus plants outdoors is the worry that comes with the cold winter months. Will your cacti survive the extremely low temperatures and constant rains? 

In some parts of the world, temperatures can sometimes drop to below freezing points during the cold winter season. Some parts may also experience extended nights of frost and a significant amount of snowfall.

One of the most challenging parts about growing cactus plants outdoors is the worry that comes with the cold winter months

Typically, in deserts, temperatures fluctuate every day by as much as 68-77oF each day. Sometimes, the extreme maximum temperature can be as high as 120oF while the extreme minimum temperature can be as low as -0.4oF.

Having adapted to these temperature fluctuations in the desert, many cacti species will tolerate low winter temperatures without any problem. However, you must always ensure that your plants are kept dry and receive plenty of light and warmth during the day.

Keep in mind that if subjected to extremely low temperatures with added moisture from snow or frost, your cacti plants may not survive if you don’t take steps to ensure they are kept dry and have access to light (even if it is artificial light from your house lamps).

In areas with long, cold winters and relatively short, cloudy days, gardeners must do everything possible to raise the minimum temperature to ensure the survival of their plants.

What is the Optimal Temperature for Cactus Plants?

To answer this question appropriately, you must know what type of cactus you have and its origin. This will help you establish its ideal temperature requirements.

While some cacti species are cold hardy, others may not survive the snow and frost at all. Some species will only do better in full sun with extremely high temperatures while others may need protection from the intense heat.

In general, most cacti species will grow better when kept in temperatures of between 45-55oF

Surviving the Winter Frost: How to Protect Your Cacti from Frost

If you live in an area that is usually hit hard with frost during the cold months, then you need to learn how to protect your precious succulents from potential damage.

Other plants in your home may have adapted well to respond to the cold weather by dying to the ground and shooting out again in spring.

Unfortunately, many succulents, including cacti, don’t have this adaptation. Therefore, you need to provide them with special care to help in protecting them from unfamiliar weather conditions

Follow these simple tips to help protect your cactus plants from frost:

Use frost cloths

High-quality frost cloths can provide adequate protection from the freezing temperatures for some time by trapping the heat and preventing it from escaping out into the cold air. The cloth also helps to prevent cold air from coming in.

Make sure the frost cloth is as close to the ground as possible and provides adequate coverage based on the overall size of your plants. Hold down the frost cloth with strong objects such as stones to stop it from being blown away.

White frost cloths work best because they allow for sunlight to get through the cloth and hit your cactus plants.

Protect your cactus plants from frost with frost cloths

Use burlap material to cover your plants

If you happen to have an old burlap material lying idle somewhere in your compound, use it to cover your cactus plants. Sometimes, you may be forced to use at least two layers of burlap if the fabric material is thin.

Burlap is breathable, allows for air circulation, and keeps the cold air out. Leave some room between the plants and burlap to prevent any damage to your plants when the material gets soaking wet.

Use outdoor furniture as cover

Positioning your cactus plants under a table, chair, or any other piece of outdoor furniture during the cold months may be enough during a light freeze.

As long as you are sure the temperature will warm up during the day and your cactus plants will receive plenty of sunlight, this method could be sufficient to protect your plants from occasional light freezes. 

However, if you expect more extreme weather such as severe freezing temperatures for several days, make sure you use a covering over the furniture. The cover can be blankets, frost cloths, or even plastic.

When using plastic as a cover, make sure you leave sufficient room between the plants and the plastic cover. Otherwise, the plastic cover can easily fry your plants when the sun comes out because temperatures can rise pretty quickly.

 Move your plants to safer places

If the drop in temperature isn’t that big then moving the plants under a shade or any other ideal location to help protect them from the cold wind may be enough.

For instance, if your cactus plants are in a windy spot, move them into a site that receives less wind to help protect them from cold. You can also position them under a large tree or to a mini greenhouse.

No matter where you choose to put your plants, make sure they can receive as much sunlight as possible during the day. But, it is good to keep in mind that this method will only work for hardier and cold-resistant cacti species.

Essential Tips for Moving Your Cactus Plants Indoors During Winter

If you cannot protect you cactus plants from the cold winter conditions or if you live in an area with extremely cold climatic conditions, then you can bring them inside to protect them from the cold.

When bringing your cacti plants indoors, do consider the following

Consider lighting conditions inside your house

One of the primary concerns with keeping cactus plants indoors is adequate lighting. Sometimes, it can be quite challenging to get adequate lighting for your cacti plants when you decide to bring them indoors during winter.

Having been accustomed to sunlight, your plants will need to receive sufficient light indoors to survive. Find a relatively bright or sunny spot inside your house and position them there.

South-facing windows always provide a perfect spot. If you cannot find a bright spot, consider using artificial lighting to keep your plants healthy.

South-facing windows always provide a perfect spot

Clean plants of dirt and debris before moving them indoors

Before you bring your cactus plants indoors, make sure you get rid of all the dirt and debris they may have collected for being outside.

Your plants will always have pebbles, little twigs, and grime when left outside for too long. Carefully wipe the dirt off the spines and pull out any unwanted weeds that may have grown in the pot.

Cleaning your plants before moving them indoors helps with the process of photosynthesis. Keep in mind that by bringing your cactus indoors, you are already subjecting them to less sunlight. Therefore, having dusty plants will only block the little amount of sunlight available from reaching the plant.

Consider temperature and humidity

If you have installed a furnace, consider adjusting your thermostat to provide cooler night temperatures. Try not to keep the indoor temperatures too warm.

Strive to provide cooler temperatures during the night so that the plant doesn’t suffer a “shock.” Plants placed near the vent or any other heat source may die.

Although many cacti species don’t mind a dry atmosphere, if you find your indoor environment too dry for your plants, install a humidifier or try putting a pot of water near the plant to help provide the much-needed humidity in the air.

  • Do not fertilize: As a general rule, don’t fertilize your cacti during winter. These plants do not grow actively during the cold season and don’t need any fertilizer.
  • Water sparingly: Also, you do not need to water your cactus plants as much as you do during the hot summer months. Water sparingly and always check the potting mix for moisture before watering again. Always ensure the potting soil is completely dry between watering sessions.
Don’t fertilize your cacti during winter

Summary

While many cacti species are adapted to the hot desert conditions, it doesn’t mean that they will die when exposed to the cold winter conditions. In fact, some cold-hardy cactus plants are well-adapted to survive in cold conditions than the hot desert conditions.

The most important thing is trying to understand your cacti species and what it needs to survive the colder months.

We hope this post has provided you with helpful information that can help you take care of your cactus plants during the cold months.  Just remember to take your plants out of their winter barracks and into the great outdoor conditions once the sky clears up and spring kicks in.

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