How Cold Can Begonias Tolerate

Like many green thumbs out there, the question, “how cold can begonias tolerate?” has often sparked my curiosity. In fact, begonias can tolerate temperatures as low as 32°F (0°C) for short periods, but they cannot survive freezing temperatures below 30°F (-1°C). This beautiful flowering plant has been a centerpiece in my garden for years, and understanding its survival limits became more of a personal endeavor.

My deep dive into the enchanting world of begonias offered me a treasure trove of valuable insights that every fellow begonia enthusiast should be privy to. In this post, we’re going to unravel just how much cold these dramatic beauties can withstand before they start showing signs of dismay.

Key Takeaways

  • Begonias can tolerate temperatures as low as 32°F (0°C) for short periods, but they cannot survive freezing temperatures below 30°F (-1°C).
  • Some hardier begonia varieties can withstand temperatures down to 40°F (4°C), but it is still important to protect them during cold weather.
  • To protect begonias in cold weather, bring them indoors when temperatures drop below 55 degrees Fahrenheit (13°C), create a comfortable indoor environment with adequate light and cool temperatures, and consider covering them with frost cloth during the coldest hours.

Understanding Begonias’ Cold Tolerance

Begonias can surprisingly tolerate colder temperatures than expected, but it is still important to protect them during cold weather.

The lowest temperature begonias can tolerate

Begonias are not made for freezing conditions. They can endure temperatures as low as 32°F (0°C), but only in short bursts. Some hardier begonia varieties can bear the chill down to 40°F (4°C).

However, if we consult experts like those from The American Begonia Society, they advise maintaining a minimum of around 55 degrees Fahrenheit (13°C) for these plants. Let’s be clear here: begonias and frost don’t mix well.

If temperatures drop below freezing point, that is 30°F (-1°C), even the toughest begonia species won’t survive it. Regardless of their type, all begonias need to be cared for properly during colder periods to ensure their survival beyond winter’s grip.

Surprising begonia cold tolerance

Begonias display extraordinary resilience to cold temperatures, surprising even the most seasoned gardeners. Known for their tropical roots, they are not expected to withstand chilly conditions.

However, these robust plants can bear temperatures plunging to 32°F (0°C), though only for short durations. Some mightier begonia varieties exhibit an impressive toughness against cold as they endure mercury drops down to 40°F (4°C).

The American Begonia Society pinpoints 55 degrees Fahrenheit (13°C) as a comfortable lower limit for these vibrant foliage plants. Despite this remarkable tolerance, it’s crucial to keep in mind that begonias cannot battle freezing conditions under any circumstances—temperatures below 30° F(-1° C) will prove fatal and none of its cultivars have the strength against such extreme cold spells.

Protecting begonias in cold weather

As a gardener, I know the importance of protecting begonias in cold weather to ensure their survival and proper cultivation. Let me share some tips:

  1. Bring them indoors when temperatures are expected to drop below 55 degrees Fahrenheit, as recommended by the American Begonia Society.
  2. Create a comfortable indoor environment for your begonias during the winter months with an adequate amount of light and cool temperatures below 62°F.
  3. If it’s not possible to bring them indoors, consider covering the begonias with a frost cloth during the coldest hours.
  4. Make sure to avoid overwatering as soggy soil combined with cold temperatures can severely damage the plant.
  5. If you live in an area where freezing occurs frequently, consider growing tuberous begonias that need cool temperatures for about 9-10 months to form a tuber.
  6. Protect delicate cultivars such as angel wing and wax begonias by bringing them inside before freezing temperatures hit.
  7. Use appropriate fertilizers even in colder weather to ensure your plants won’t die back and can bloom beautifully next year.

Maintaining Begonias in Cold Weather

Begonias on balcony cold weather

To ensure the survival and regrowth of begonias in cold weather, it is important to follow some key tips and practices.

Tips for protecting begonias in cold weather

I have compiled a list of tips to help you protect your begonias during cold weather:

  1. Bring them indoors: When temperatures drop, bring your begonias inside to protect them from the cold.
  2. Provide proper insulation: Place your begonias in a location away from drafts and keep them insulated with blankets or frost cloth.
  3. Avoid overwatering: During the winter months, reduce watering frequency to prevent soggy soil, which can lead to root rot and damage the plant.
  4. Maintain adequate light: Begonias still need light even in colder weather. Place them near a window that receives plenty of sunlight or consider using artificial grow lights.
  5. Adjust temperature and humidity levels: Keep your indoor environment at an optimal temperature range of 60-70°F (15-21°C) and maintain moderate humidity levels for healthy plants.
  6. Monitor for pests: Check your begonias regularly for any signs of pests such as aphids or mealybugs, as they can become more prevalent in indoor environments during winter.
  7. Prune damaged foliage: If your begonias experience any frost or cold damage, prune back the damaged foliage to encourage new growth come spring.

Ensuring regrowth next year

To ensure regrowth of your begonias next year, it is crucial to provide them with proper care during the winter months. One important step is to bring your begonias indoors when temperatures start dropping below their tolerance level, which is around 55 degrees Fahrenheit (13°C).

Find a bright and cool area in your home where they can receive enough light but avoid drafts or sudden temperature changes.

During this period, adjust your watering routine as well. Water sparingly, allowing the soil to dry out slightly between waterings. Overwatering can lead to root rot and damage the plants.

It’s also advisable to reduce fertilization during winter dormancy as begonias do not require as much nutrients.

Best practices for fertilizing begonias

Fertilizing begonias is crucial for their growth and overall health. Here are some best practices to keep in mind:

  1. Use a balanced fertilizer: Choose a fertilizer with equal amounts of nitrogen, phosphorus, and potassium (NPK). This will provide the necessary nutrients for healthy foliage and vibrant flowers.
  2. Feed regularly: Begin fertilizing when your begonias start actively growing, typically in early spring. Feed every two weeks during the growing season to support continuous growth and flowering.
  3. Dilute the fertilizer: Follow the instructions on the fertilizer package and dilute it to half or one-quarter strength. This helps prevent over-fertilization, which can harm the plants.
  4. Apply evenly: Spread the diluted fertilizer evenly around the base of each plant. Avoid applying it directly on the leaves or stems, as this can cause burning or damage.
  5. Water after fertilizing: After applying the fertilizer, water your begonias thoroughly. This helps carry the nutrients into the soil and prevents any potential burn from concentrated minerals.
  6. Adjust based on plant needs: Pay attention to your begonias’ growth and adjust fertilization accordingly. If they appear weak or lackluster, you may need to increase feeding frequency or switch to a higher nitrogen fertilizer.
  7. Stop fertilizing in late summer: As fall approaches, reduce or stop fertilizing your begonias altogether. This signals them to enter dormancy and prepares them for winter rest.

Risks and Concerns

– The potential damage from cold temperatures on begonias is a significant concern for gardeners, but there are ways to mitigate the risks and protect these beautiful plants. Find out how to identify and address overwatering issues, as well as the impact of cold temperatures on animal safety.

Read on to learn more about keeping your begonias safe in chilly weather.

Potential damage from cold temperatures

Cold temperatures can cause significant damage to begonias. When exposed to freezing temperatures, the plant cells can freeze and burst, leading to wilting and death of the foliage.

Even temperatures below freezing but above 30°F (-1°C) can be detrimental to begonias, as they cannot withstand these extreme conditions. It is essential to protect begonias from cold air and frost by bringing them indoors or using frost cloth.

Additionally, if left outdoors during winter dormancy, the tubers of tuberous begonias may rot in excessively wet or soggy soil due to low temperatures. Therefore, it is crucial to keep the soil well-drained and avoid overwatering during this time.

How to identify and address overwatering

Overwatering can be detrimental to begonias’ health and survival. Here are some tips to identify and address overwatering:

  1. Check the soil moisture: Insert your finger about an inch into the soil. If it feels excessively damp or soggy, it’s a sign of overwatering.
  2. Look for yellowing leaves: Overwatered begonias often develop yellow leaves that may wilt or become soft and mushy.
  3. Monitor root health: Gently remove the plant from its pot and inspect the roots. If they appear brown, mushy, or have a foul odor, it indicates overwatering damage.
  4. Adjust watering frequency: Allow the soil to dry out partially between waterings. Stick to a regular watering schedule rather than giving excessive amounts of water at once.
  5. Improve drainage: Ensure proper drainage by using well-draining potting mix and pots with drainage holes. Adding perlite or sand can also help improve drainage.
  6. Use bottom watering method: Instead of watering from above, place the potted begonia in a tray filled with water and allow it to soak up moisture from the bottom for about 15-20 minutes.
  7. Adjust environmental conditions: Avoid placing begonias in areas with high humidity or low air circulation, as these conditions can contribute to overwatering.
  8. Trim damaged foliage: If you notice any leaves that are affected by overwatering, carefully remove them to promote healthy growth.
  9. Adjust fertilizer application: Overfertilizing combined with overwatering can lead to nutrient imbalances and further stress the plant. Follow recommended guidelines for fertilizing begonias.
  10. Repot if necessary: If the current potting mix holds too much moisture, consider repotting with a well-draining mix that suits the specific needs of begonias.


Begonias have surprising cold tolerance and can withstand temperatures as low as 32°F (0°C) for short periods. However, they cannot survive freezing temperatures below 30°F (-1°C).

Proper care is essential to protect begonias from the cold and ensure their survival. Understanding begonia cold tolerance is crucial for maintaining healthy plants throughout the winter months.

Frequently Asked Questions

How cold can begonias tolerate?

Begonias can tolerate cold temperatures to a certain extent, depending on the cultivar and species. Some begonias are more cold-tolerant than others.

What types of begonias can tolerate cold?

Some cold-tolerant begonias include wax begonias, angel wing begonias, and hardy begonias. These varieties are more resilient to cold temperatures compared to others.

Can begonias survive freezing cold?

No, most begonias cannot survive freezing cold temperatures. Freezing temperatures will damage their foliage and can cause the plants to die back.

How should I protect my begonias during the winter?

To protect your begonias during the winter, it’s best to bring them indoors if you live in an area with very cold temperatures. Place them in a well-lit area away from drafts and maintain temperatures between 50 to 55 degrees Fahrenheit.

Can begonias be grown indoors?

Yes, begonias can be grown indoors as houseplants. They can thrive well indoors with proper care and suitable lighting conditions.

Do all begonia species have the same cold tolerance?

No, different begonia species have varying levels of cold tolerance. It’s important to research and understand the specific cold tolerance of the begonia species you are growing.

Can I overwinter my begonias?

Yes, you can overwinter begonias by bringing them indoors during the colder months. This will help protect them from harsh winter conditions and allow them to remain dormant until spring.

What happens to begonias in cold temperatures?

In cold temperatures, begonias may experience damage to their foliage and can potentially die back. It is important to provide them with protection or move them indoors to avoid this.

Can begonias tolerate temperatures as low as freezing point?

No, most begonias cannot tolerate temperatures as low as freezing point (32 degrees Fahrenheit). Freezing temperatures can be detrimental to their growth and survival.