Introduction
The vibrant colors and lush textures of begonias are often the highlight of a summer garden. Whether it is the cascading blooms of a hanging basket or the metallic shimmer of fancy foliage, these plants offer a unique charm. It is only natural to want to bring that beauty inside when the seasons change or to enjoy them as year-round houseplants. The good news is that begonias can thrive in an indoor environment, provided you understand a few of their simple preferences.
At Longfield Gardens, we want to help you enjoy your plants for as long as possible. Transitioning a begonia to the indoors is a rewarding way to extend your gardening season and brighten your home. This guide is designed for anyone who wants to successfully grow begonias inside, whether you are starting with a new houseplant or saving a favorite variety from the first frost. If you want a broader look at the family, our All About Begonias guide is a helpful place to start.
We will cover the different types of begonias, their light and water needs, and how to keep them happy in a home environment. With the right approach, you can turn your living space into a tropical oasis. For a quick primer on plant types, see What Is a Begonia Plant?
Choosing the Right Begonia for Your Home
The first step to indoor success is knowing which type of begonia you have. There are thousands of varieties, but they generally fall into a few main categories. Each group has a slightly different personality when grown indoors.
Rex Begonias
Rex begonias are the "fancy-leaf" stars of the family. They are primarily grown for their stunning foliage rather than their flowers. You will find leaves with swirls of silver, purple, pink, and deep burgundy. Because they naturally grow on forest floors, they are well-adapted to the lower light levels found in most homes. They love humidity and consistent moisture, making them excellent candidates for a brightly lit bathroom or a kitchen windowsill.
Cane Begonias (Angel Wings)
Cane-stemmed begonias are named for their upright, bamboo-like stems. Many people call them "Angel Wing" begonias because of their long, pointed leaves that often feature silver spots. These are some of the toughest begonias for indoor growing, as noted in our Are Begonias Good Indoor Plants? guide. They can grow quite tall, sometimes reaching several feet, and they produce beautiful clusters of drooping flowers in shades of white, pink, or red.
Rhizomatous Begonias
This group grows from thick, fleshy stems called rhizomes that creep along the surface of the soil. They are incredibly diverse, with leaf shapes ranging from stars to circles. Rhizomatous begonias are often quite sturdy and can handle slightly drier air than Rex varieties. They store water in their thick stems and leaves, which gives you a little more flexibility with your watering schedule.
Wax Begonias (Fibrous Rooted)
These are the classic bedding plants often seen in public parks and garden borders. While they are usually grown as annuals outdoors, they can be brought inside for the winter. They are compact, bushy, and very generous with their small, waxy flowers. They prefer a bit more light than the foliage types to keep blooming throughout the darker months.
Tuberous Begonias
Tuberous begonias, like the Non-Stop or Pendula varieties we offer, are famous for their large, rose-like blossoms. These begonias grow from a potato-like bulb called a tuber. It is important to know that these plants have a natural life cycle that includes a dormant period. While they can be started indoors in early spring to get a head start on the season, they generally need a rest during the winter. Our All About Begonias article explains this cycle in more detail.
Lighting: The Key to Vibrant Leaves and Blooms
In the garden, most begonias prefer a spot with dappled shade or morning sun. Indoors, finding the right "bright indirect light" is the secret to success. If you want more general guidance on placement, our Are Begonias Indoor or Outdoor Plants? article is a good reference.
Finding the Best Window
An east-facing window is often the perfect spot. It provides gentle morning sun that isn't hot enough to scorch the leaves. A west-facing window can also work, but you may need a sheer curtain to filter the intense afternoon light. North-facing windows might be a bit too dark for flowering varieties, though some foliage begonias will grow there quite happily.
Signs Your Begonia Needs More Light
If your begonia starts to look "leggy"—meaning the stems are stretching out with a lot of space between the leaves—it is likely looking for more light. You might also notice that the vibrant colors on Rex begonia leaves begin to fade to a dull green. Simply moving the plant closer to a light source or adding a small LED grow light can quickly fix this.
Protecting Leaves from Scorch
While begonias like light, direct midday sun through a glass pane can act like a magnifying glass. If you see brown, crispy spots on the leaves or if the edges look singed, the light is too intense. Moving the plant just a few feet back from the window is usually enough to keep it safe.
Key Takeaway: Begonias thrive in bright, indirect light. Aim for a spot where the plant can see the sky but isn't sitting in the path of harsh, direct sunbeams.
Watering Without the Worry
Watering is often where new indoor gardeners feel the most pressure, but it doesn't have to be complicated. The goal is to keep the soil moist but not soggy. For more on everyday care, see How to Take Care of a Begonia Plant.
The Finger Test
Instead of watering on a strict schedule, use your finger to check the soil. Stick your finger about an inch deep into the potting mix. If it feels dry, it is time to water. If it still feels damp, wait a few more days. This simple check accounts for changes in your home’s temperature and humidity.
How to Water Correctly
When you water, pour enough so that it runs out of the drainage holes at the bottom of the pot. This ensures that the roots at the very bottom get a drink. It also helps wash away any salt buildup from fertilizers. Always empty the saucer after a few minutes; begonias do not like to have "wet feet," which can lead to root rot.
Avoid Wetting the Foliage
Begonias can be sensitive to water sitting on their leaves, especially in the cooler indoor air. This can lead to fungal issues like powdery mildew. To keep your plant healthy, direct the water at the base of the plant, near the soil, rather than pouring it over the top of the leaves.
Boosting Humidity in a Dry House
Most begonias come from tropical or subtropical regions where the air is naturally moist. Our homes, especially during the winter when the heater is running, can be very dry. Providing a little extra humidity will keep your begonia’s leaves looking lush and prevent the edges from turning brown and crispy.
The Pebble Tray Method
A pebble tray is an easy, low-maintenance way to increase humidity around your plants. Find a shallow tray or saucer and fill it with small stones or decorative pebbles. Pour water into the tray so it reaches just below the top of the stones. Set your begonia pot on top of the pebbles. As the water evaporates, it creates a small zone of humid air right where the plant needs it most. Just make sure the bottom of the pot isn't actually sitting in the water.
Grouping Plants Together
Plants naturally release moisture through their leaves in a process called transpiration. By grouping several houseplants together, you create a collective microclimate with higher humidity. This is a simple way to help all your indoor plants thrive at once.
Why Misting Isn't the Best Option
While it seems helpful, misting leaves with a spray bottle only provides a very brief boost in humidity. The water often evaporates in minutes. Furthermore, leaving water droplets on begonia leaves can encourage mold or spots. Stick to pebble trays or a small room humidifier for better, long-term results.
Soil and Potting for Success
The right "home" for your begonia’s roots makes a big difference in how easily you can manage moisture.
The Best Potting Mix
Begonias need a soil that holds some moisture but allows the rest to drain away quickly. A standard, high-quality indoor potting mix usually works well. If you find the soil stays wet for too long, you can mix in a handful of perlite or coarse sand. Drainage, which is how fast water leaves the soil, is critical for preventing root damage.
Choosing the Right Pot Size
It is tempting to put a small plant in a large pot so it has "room to grow," but this can actually be counterproductive. A large volume of soil holds more water than a small root system can drink, which keeps the soil cold and wet. Choose a pot that is only an inch or two wider than the current root ball. As the plant grows, you can move it up to the next size.
The Importance of Drainage Holes
Always use a pot with at least one drainage hole in the bottom. If you have a beautiful decorative pot without a hole, use it as a "cachepot." Keep your begonia in a plain plastic nursery pot with holes, and set that inside the decorative one. When you water, take the plastic pot to the sink, let it drain, and then put it back in the pretty container.
What to do next:
- Check the drainage of your current begonia pots.
- Prepare a pebble tray if your indoor air feels dry.
- Purchase a high-quality, peat-based potting mix for future repotting.
Moving Begonias from Garden to Living Room
If you have begonias growing in your garden or in porch containers, you can bring them inside before the first frost arrives. This transition is most successful when done gradually. If you are planning your timing by climate, the Hardiness Zone Map can help you think through seasonal changes in your area.
Inspect for Garden Guests
Before bringing any plant into your home, give it a thorough inspection. Check the undersides of leaves and the stems for any hitchhiking insects. A quick spray with a garden hose can help wash away dust and any small pests. You want to make sure you aren't introducing outdoor bugs to your other houseplants.
Trimming for a New Environment
Outdoor plants often have a lot of lush growth supported by the intense sun and fresh air. When they move inside, they may not be able to maintain all that foliage. It is a good idea to trim back the stems by about a third. This reduces the stress on the roots and encourages the plant to grow new leaves that are better adapted to indoor light levels.
The Acclimation Period
If possible, move your plants to a porch or a more shaded area for a few days before bringing them all the way inside. This helps them get used to lower light levels. Once they are indoors, place them in your brightest window. At Longfield Gardens, we recommend doing this while the windows are still open during the day, so the change in humidity and airflow isn't too sudden.
Special Care for Tuberous Begonias
Tuberous begonias are slightly different from the other types mentioned. While they can be grown in pots and kept on a bright windowsill, they are genetically programmed to rest during the winter. For more general zone and climate context, see our Know Your Growing Zone: Cold Hardiness and Heat Tolerance guide.
Winter Dormancy
As the days get shorter in the fall, you may notice your tuberous begonias starting to look a bit tired. The leaves might turn yellow, and the plant will stop producing new flowers. This is a natural signal that the plant is moving its energy down into the tuber for storage.
To help them along, gradually reduce your watering. Once the stems naturally die back, you can cut them off and move the pot to a cool, dry, dark place (like a basement or a closet) for the winter. Alternatively, you can lift the tubers out of the soil, let them dry, and store them in a box of peat moss or sawdust.
Starting Early in Spring
One of the best ways to enjoy tuberous begonias indoors is to "wake them up" in late winter or early spring. About 8 to 12 weeks before the last frost, place the tubers on damp potting soil in a warm, bright spot. This gives them a massive head start, so they are already blooming by the time it is warm enough to move them back outside to your porch or patio.
Simple Maintenance for Year-Round Beauty
Once your begonia is settled into its indoor home, a little bit of routine care will keep it looking its best.
Regular Grooming
Begonias are very good at telling you what they need. If a leaf turns yellow or a flower fades, simply pinch it off with your fingers or a clean pair of scissors. This process, called deadheading, keeps the plant looking tidy and prevents old blooms from rotting on the stems. It also encourages the plant to put its energy into new growth.
Fertilizing Indoors
Because indoor plants grow more slowly than outdoor ones, they don't need quite as much food. During the spring and summer, you can use a balanced, water-soluble fertilizer at half the recommended strength once a month. When growth slows down in the winter, it is best to stop fertilizing until you see new leaves appear in the spring.
Managing Growth
If your cane begonia is getting too tall or your wax begonia is looking a bit sparse, don't be afraid to prune. Cutting a stem just above a leaf node (the little bump where a leaf meets the stem) will encourage the plant to branch out and become bushier. Most begonias are very resilient and respond well to a light trim.
Propagation: Making New Plants
One of the most fun parts of growing begonias indoors is how easy they are to propagate. Many varieties can be grown from a single leaf or a stem cutting. Simply place a stem cutting in a glass of water or a small pot of moist soil. In a few weeks, you will see new roots forming. This is a great way to "bank" your favorite varieties or share plants with friends.
Creating a Positive Indoor Garden
Gardening indoors should be a relaxing and enjoyable hobby. Begonias are particularly rewarding because they offer so much visual interest for a relatively small amount of effort. By getting the basics of light and water right, you can enjoy these tropical beauties through every season. If you want to review more general shopping and care information, the begonia collection is a good place to browse.
If a plant drops a few leaves when you first bring it inside, do not worry. It is simply adjusting to its new home. With a little patience and the right care, it will soon start pushing out new growth that is perfectly suited for your living room.
Final Checklist for Indoor Success:
- Identify your begonia type to understand its specific needs.
- Place the plant in bright, indirect light (east or west windows are best).
- Water only when the top inch of soil feels dry to the touch.
- Use a pebble tray or group plants to keep humidity high.
- Inspect and prune regularly to keep the plant healthy and compact.
Conclusion
Growing begonias indoors is a fantastic way to bring life and color into your home. Whether you are mesmerized by the intricate patterns of a Rex begonia or the reliable blooms of a cane variety, these plants are adaptable and generous. By following a few simple rules—matching the light to the variety, watering mindfully, and providing a bit of extra humidity—you can create a thriving indoor garden.
At Longfield Gardens, we believe that everyone can find success with these beautiful plants. The transition from the garden to the indoors is a natural part of the gardening journey, allowing you to stay connected to your plants all year long. For more growing basics, you can also explore our shipping information page when planning orders by season.
"The beauty of begonias is that they offer something for everyone, from spectacular flowers to foliage that looks like a work of art. Bringing them indoors is simply the next step in enjoying their unique charm."
We hope this guide gives you the confidence to bring your begonias inside and enjoy their tropical flair throughout the year. For more tips on selecting and growing the best varieties for your home and garden, we invite you to explore our other planning guides.
FAQ
Can I grow tuberous begonias as houseplants all winter?
Tuberous begonias naturally require a period of dormancy to stay healthy. While they can stay green for a long time, they will eventually stop blooming and die back in the late fall. It is best to let them rest during the winter and restart them in the spring for the best display of flowers.
Why are the edges of my begonia leaves turning brown?
Brown, crispy edges are usually a sign of low humidity or inconsistent watering. Our homes can become very dry in the winter. Using a pebble tray or grouping your begonia with other plants can help raise the moisture levels in the air and keep the foliage looking fresh.
Do I need to use a special type of fertilizer for indoor begonias?
A standard, balanced liquid fertilizer (such as a 10-10-10 or 20-20-20) works well for most begonias. To be safe, we suggest diluting it to half the strength recommended on the package. This provides enough nutrients for healthy growth without the risk of burning the plant's delicate roots.
How do I know if my begonia is getting too much water?
The most common sign of overwatering is yellowing leaves that feel soft or mushy. If the stems start to turn dark and feel limp at the base, the roots may be struggling with too much moisture. Always check that the top inch of soil is dry before adding more water.
