Having trouble making your Ruby Begonia flourish? This striking indoor plant, native to Brazil and known as Begonia acetosa, can be a delightful addition to any home garden. In this comprehensive guide, we’ll unpack everything you need to know about the care requirements of a Ruby Begonia – from light and humidity needs to watering schedules and soil types.

Got your gardening gloves ready? Let’s dive into the world of begonias!

Key Takeaways

  • Ruby Begonias need bright, indirect light for about 7 to 8 hours a day.
  • The ideal temperature range for Ruby Begonias is between 55-65 degrees Fahrenheit (13-18 degrees Celsius).
  • Use well – draining soil that holds moisture and provides air circulation for the roots of your Ruby Begonia.
  • Water your Ruby Begonia when the top inch of soil feels dry. Avoid waiting until it’s one – third dry.

How to Care for Ruby Begonia

To ensure the health and vitality of your Ruby Begonia, it is important to provide the right conditions for growth. This includes providing adequate light, maintaining the appropriate temperature, using well-draining soil, monitoring humidity levels, watering properly, fertilizing regularly, pruning as needed, protecting against pests and diseases, and knowing how to propagate if desired.

By following these care guidelines, you can enjoy a thriving indoor garden filled with beautiful Ruby Begonias.

Light Requirements

Ruby Begonia needs a lot of light but not hot sun. The leaves can burn if the sun is too hot. Try to give your plant bright, indirect light. It likes seven to eight hours of this kind of light each day.

In winter, it can take some sun, but be careful not to let it get too much direct sunlight. This helps keep its leaves healthy and free from harm.

Temperature Requirements

Ruby Begonias love warmth. Still, they can’t stand hot temperatures over 40 degrees Celsius. So, it’s best to keep them in a room where the temperature is steady. They enjoy a bit of chill at night though, so aim for between 55-65 degrees Fahrenheit (13-18 degrees Celsius) when the sun goes down.

If it’s too warm or too cold, your Ruby Begonia may get sick.

Inside your home is perfect for them as you usually have control over the heat and cold using a heater or an air conditioner. Keep an eye on your plant, if its leaves start to droop or if the top inch of soil gets dry that means it needs water.

Don’t wait until the soil is one-third dry before watering; that could be too late for this sensitive beauty! Like us humans, these plants don’t like wild swings in temperature either.

See also: How To Plant Mandevilla Seeds Indoors?

Soil Requirements

Ruby Begonia needs special soil to grow well. The soil should drain well but also hold moisture. You can help the soil hold water by adding peat moss. This helps make a good potting mix for your plant.

The roots of Ruby Begonia need air, just like they need water. So, it is important that the soil lets air move around freely. Peat-based compost can work very nice here. A beefsteak begonia does best in a porous and well-draining type of soil with a pH level between 6.1 and 7.5.

How to Make Potting Soil for Ruby Begonia

To provide the best care for your Ruby Begonia, it’s important to use the right potting soil. Here’s how you can make the perfect potting soil for your plant:

  1. Start with a base of peat – based compost. This type of compost is ideal for Begonias like the Ruby Glow variety.
  2. Add some perlite or vermiculite to improve drainage and prevent the soil from becoming waterlogged.
  3. Mix in a small amount of sand to help with aeration and prevent compacting of the soil.
  4. To make the soil more nutritious, add some well – rotted organic matter or worm castings.
  5. Finally, ensure that the pH level of the soil is slightly acidic, around 6.0 to 6.5, as this is optimal for Begonias.

Humidity Requirements

Ruby Begonia, just like other begonias, prefers average home humidity levels for its growth. However, during the winter months when the air is drier, it may need increased humidity to thrive.

This means that if you’re growing Ruby Begonia indoors, you might need to provide some extra moisture to keep the humidity at an optimal level. On the other hand, if you have Beefsteak begonias or Rex begonias (which are related species), they require a specific humidity level of 50% for their best growth.

So depending on the type of begonia you have, you may need to monitor and adjust the humidity accordingly. If you’re caring for Begonia ‘Stained Glass’, make sure to provide shade along with high humidity because these conditions are important for its well-being.


Watering your Ruby Begonias properly is crucial for their health and growth. It’s best to water them from the bottom up by placing the pot in a shallow tray filled with water. This allows the roots to soak up the moisture they need.

Before watering, check the soil’s moisture level by sticking your finger about an inch into the pot. If it feels dry, it’s time to water.

Keep in mind that how much you water depends on different factors like sunlight exposure and pot size. Generally, look for signs like drooping leaves or when the top inch of soil is dry before giving your begonias a good drink.


Regular fertilizing is an important part of caring for Ruby Begonia, especially during the spring and summer seasons. To keep your Begonia healthy and blooming, it’s recommended to use organic flower fertilizers on a weekly basis during the summer.

If you have Ruby Glow Begonia, you can use water-soluble fertilizers every two weeks, following the instructions on the label. By providing regular nutrients to your Red Ruby Begonia through fertilization, you can enhance bloom retention and overall plant health.

So don’t forget to give your Begonia some love with proper fertilizing!


Pruning is an important part of caring for your Ruby Begonia. It should be done in the spring and summer months to encourage bushier growth. When pruning, make sure to use clean and sterilized tools to avoid spreading diseases.

Removing damaged or leggy leaves will help keep your Begonia healthy and looking its best. Regular pruning also promotes new growth and helps maintain the overall shape of the plant.

So don’t forget to give your Ruby Begonia a little trim every now and then!

Pests and Diseases

Pests and diseases can be a challenge when caring for your Ruby Begonia. Common pests include aphids, mites, and insect infestations that can cause damage to the leaves. Diseases such as Botrytis blight, powdery mildew, and stem rot can also affect your plant’s health.

It’s important to keep an eye out for wilting, which can be caused by temperature stress or disease. To prevent these problems, make sure to provide proper lighting, maintain the right temperature and humidity levels, use well-draining soil, water carefully to avoid root rot, and prune any affected parts promptly.

Regularly inspecting your plants will help you catch any pests or diseases early on so that you can take appropriate action.


To propagate your Ruby Begonia, follow these steps:

  1. Use a healthy leaf by cutting it off from where it joins the stem.
  2. Slash the leaf along the main vein before planting it.
  3. For vegetative propagation, you can use shoot cuttings or leaf cuttings.
  4. To propagate through leaf cuttings, place them in a warm, well – lit spot with high humidity (avoid direct sunlight) until roots start forming.
  5. Another reliable method is to plant four – inch begonia cuttings directly into a growing medium.

Extra Tips for Ruby Begonias

To keep your Ruby Begonias happy and healthy, here are some extra tips to consider. When transplanting your begonias, make sure to do it in the spring for the best results. Trimming them regularly will help maintain their shape and appearance.

When it comes to watering, check the soil moisture and water when the top inch is dry or when the leaves start drooping. Place your begonias in a spot with bright natural light, as they thrive in these conditions.

However, they also have good shade tolerance, so finding the right balance is key. Remember that begonias require suitable sun exposure, shade protection, and well-draining soil to grow their best.

By following these tips and providing optimal growing conditions, you’ll enjoy beautiful and healthy Ruby Begonias all year round without any issues!

FAQs – How To Care For Ruby Begonia

1. How often should I water my Ruby Begonia?

Water your Ruby Begonia when the top inch of soil feels dry to the touch. Be careful not to overwater, as it can lead to root rot.

2. Does my Ruby Begonia need direct sunlight?

Ruby Begonias prefer bright, indirect sunlight but can tolerate some direct sunlight in the morning or late afternoon. Avoid placing them in intense, midday sun.

3. How do I fertilize my Ruby Begonia?

Fertilize your Ruby Begonia once a month during the growing season with a balanced liquid fertilizer diluted according to package instructions.

4. How do I propagate my Ruby Begonia?

To propagate your Ruby Begonia, take stem cuttings with at least two leaves and place them in a container with moist potting mix. Keep them in a warm and humid environment until roots develop.

5. What should I do if there are yellowing leaves on my Ruby Begonia?

Yellowing leaves on a Ruby Begonia could be a sign of overwatering or insufficient light. Adjust your watering routine and ensure the plant is getting enough indirect sunlight for healthier foliage growth.

George Brown

George Brown

I’m George Brown, a keen indoor gardener, passionate about helping beginners grow fresh herbs and indoor plants. My guidance focuses on the essentials of plant growth and the pleasure of cultivating greenery indoors. In my blog posts, I share practical tips on how anyone can transform their home into a thriving space for indoor plants and herbs.

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