Introduction
There is something truly special about the moment a begonia begins to unfurl its first velvety leaves. These plants are the ultimate multitaskers of the gardening world. They offer everything from rose-like blooms to foliage that looks like it was painted by hand. Whether you have a shady porch that needs a pop of color or a bright windowsill looking for a new tenant, begonias are ready to step in and shine.
At Longfield Gardens, we enjoy helping gardeners discover how versatile these plants can be. Because there are thousands of species and hybrids—a diversity often celebrated by the American Begonia Society—it can sometimes be confusing to know exactly where they belong. The good news is that most begonias are comfortable in both settings. You simply need to match the specific variety to the right environment.
This guide will help you understand which begonias thrive in the garden and which ones make the best houseplants. We will cover the specific needs of different varieties so you can feel confident adding them to your home. Whether you are a beginner or an experienced grower, you will find that begonias are among the most rewarding plants to cultivate. Begonias are flexible enough for both garden beds and windowsills when you follow a few simple steps.
The Short Answer: Both
The answer to whether begonias are indoor or outdoor plants is a happy "both." While they are native to tropical and subtropical climates, their diverse growth habits allow them to adapt to many roles. In the United States, most gardeners treat begonias as outdoor annuals during the warm summer months. They then either bring them inside as houseplants or store them when the weather turns cold.
Begonias are generally classified as tender perennials. This means they can live for many years, but they do not tolerate frost. In USDA hardiness zones 9 through 11, they can stay outdoors all year long. However, there are exceptions like Begonia grandis, which is a hardy species that can survive winters in cooler climates (down to Zone 6) if given proper mulch and protection. For most other varieties in cooler areas, they are the perfect candidates for container gardening. This allows you to enjoy them on the patio in July and in the living room in January.
Matching the type of begonia to your intended location is the first step toward success. Some varieties are bred specifically for their massive, colorful flowers. Others are prized for their dramatic, metallic-toned leaves. By understanding these differences, you can choose the right plant for your specific needs.
Understanding the Different Types of Begonias
To decide if a begonia should live indoors or out, it helps to know which group it belongs to. Most home gardeners will encounter five main groups. Each has its own personality and preferences for light and moisture.
Tuberous Begonias
Tuberous begonias are the stars of the summer shade garden. They grow from a thickened underground stem called a tuber. These produce some of the most spectacular flowers in the plant kingdom. The blooms can be single or double, often resembling camellias or roses.
We often recommend tuberous begonias for outdoor containers and hanging baskets. They love the fresh air and the dappled light of a porch or patio. While they can be grown indoors, they typically require a period of winter dormancy. This makes them less common as year-round houseplants. Varieties like the ruffled "Fimbriata" or the cascading "Pendula" types are classic choices for adding elegance to outdoor spaces. If you want to start with a ready-to-plant option, try our Begonia Non Stop Mix.
Rex Begonias
Rex begonias are grown primarily for their incredible foliage. Their leaves feature swirls of silver, purple, pink, burgundy, and deep green. Because they are so focused on their leaves, their flowers are usually small and less significant.
Rex begonias are the "gold standard" for indoor begonias. They thrive in the consistent temperatures and indirect light found inside a home. However, they also make excellent additions to outdoor shade gardens during the summer. Their striking patterns provide a wonderful contrast to green ferns or hostas in a shaded bed.
Wax Begonias
If you have ever seen a public park filled with tidy rows of red, white, or pink flowers, you were likely looking at wax begonias. These are fibrous-rooted plants with succulent, waxy leaves. They are incredibly tough and can handle more sun than most other begonia types.
Wax begonias are most commonly used as outdoor bedding plants. They are reliable and bloom continuously from spring until the first frost. They can be moved indoors for the winter, where they will continue to grow as a compact houseplant. They may bloom less frequently in lower indoor light, but they remain cheerful and green.
Cane-Stemmed Begonias
These begonias are named for their long, upright stems that resemble bamboo. They are also frequently called "Angel Wing" begonias because of their beautiful, wing-shaped leaves. They often feature silver spots or metallic sheens on the foliage and produce hanging clusters of flowers.
Cane begonias are very adaptable. They are popular as large, statement-making houseplants because they can grow quite tall. Outdoors, they work beautifully as a central focal point in a large container. They are sturdy and generally easier to transition between indoor and outdoor environments than the more delicate Rex varieties.
Florist Begonias (Semi-Tuberous)
Commonly known as Rieger or Elatior begonias (Begonia × hiemalis), these are the quintessential flowering houseplants. Unlike tuberous begonias that flower in summer, these hybrids were bred to produce a spectacular begonia flower display during the shorter days of winter and spring.
While often sold as gift plants, they can live for several seasons if cared for properly. They are almost exclusively kept indoors or in very sheltered, cool outdoor spots, as they are quite delicate and prone to mildew if exposed to heavy rain or high heat.
Key Takeaway: Match the begonia type to your goals. Tuberous, Wax, and Begonia grandis are outdoor champions for flowers and landscape use. Rex begonias are foliage-heavy indoor favorites. Florist begonias are perfect for winter indoor blooms, while Cane begonias offer the best of both worlds.
Choosing the Best Begonia for Your Space
To help you decide which variety fits your needs, we have mapped the most common types to their ideal use cases:
- Bright Indoor Window: Rex Begonias (for foliage), Cane-Stemmed/Angel Wing (for height), or Florist Begonias (for seasonal flowers).
- Shady Patio or Porch: Tuberous Begonias in hanging baskets or pots.
- Garden Bedding or Edging: Wax Begonias (can handle sun) or Rex Begonias (for shade contrast).
- Large Statement Container: Cane-Stemmed Begonias used as a "thriller" in the center.
- Cooler Climate Landscape: Begonia grandis for its surprising winter hardiness.
Growing Begonias Outdoors
When you move begonias into the garden, you give them the space to reach their full potential. The key to success outdoors is replicating their native tropical environment. They want warmth, humidity, and protection from the harshest rays of the sun.
Finding the Right Light
Most begonias are described as "shade-loving," but that term can be a bit misleading. In the garden, shade usually means bright, indirect light or filtered sunlight. Deep, dark shade often results in leggy plants with very few flowers.
For the best results, look for a spot that receives morning sun and afternoon shade. The morning sun is cool and provides the energy the plant needs to bloom. The afternoon shade protects the leaves from scorching. If you notice the leaves turning brown and crispy at the edges, the plant is likely getting too much direct sun. For more on placement, see Where to Plant Begonias.
Soil and Drainage
Drainage is perhaps the most important factor for outdoor begonias. Whether you are planting in the ground or in a pot, the soil must allow water to move through it freely. Begonias have succulent stems that hold a lot of water. If they sit in soggy soil, those stems and the roots can rot very quickly.
If you are planting in garden beds, we suggest mixing in some organic matter like compost to improve the soil structure. If you are using containers, a high-quality, peat-based potting mix is ideal. Ensure your pots have plenty of drainage holes.
Watering and Feeding
Outdoors, the wind and sun will dry out your plants faster than they would indoors. Check the soil daily by sticking your finger about an inch deep. If it feels dry, it is time to water.
Try to water at the base of the plant rather than over the leaves. Wet foliage, especially in humid summer weather, can lead to powdery mildew. A balanced, water-soluble fertilizer applied every two to three weeks will keep your begonias fueled for their blooming cycle. For more detailed planting advice, visit How to Plant and Care for Begonias.
Growing Begonias Indoors
Bringing begonias inside allows you to enjoy their beauty up close regardless of the season. Indoor begonias provide a lush, tropical feel to any room. They can even help brighten up the darker months of the year.
Light Requirements for the Home
Indoors, light is often the biggest challenge. While begonias like shade outdoors, they need the brightest indirect light you can provide when they are inside. A window facing east or west is often the perfect spot.
If your windows do not provide enough light, you may notice the plant reaching toward the glass. You might also see the vibrant color in its leaves beginning to fade. In these cases, a simple LED grow light can make a world of difference. Avoid placing them in south-facing windows where the direct, magnified sun can burn the foliage.
Temperature and Humidity
Begonias are comfortable in the same temperatures that people enjoy. They prefer a range between 65°F and 75°F. However, they are sensitive to drafts. Keep them away from air conditioning vents in the summer and space heaters in the winter.
Humidity is the "secret ingredient" for indoor begonia health. Modern homes tend to have very dry air. To increase humidity, you can group several plants together to create a small microclimate. You can also place the pot on a tray filled with pebbles and a small amount of water. Just ensure the bottom of the pot does not actually touch the water.
Indoor Potting and Feeding
Indoor begonias generally prefer to be slightly "pot-bound." This means they like their roots to be a bit snug in the container. When you do need to repot, only move up to a size that is one or two inches larger in diameter. Use a loose, peat-based potting mix that provides plenty of aeration.
For feeding, we recommend a balanced liquid fertilizer diluted to half-strength. Apply this every two to four weeks during the spring and summer while the plant is actively growing. In the winter, when light levels are lower, you can stop feeding and reduce watering significantly, allowing the soil to dry out more between drinks.
Pruning and Maintenance
Pinch back the stems of cane and wax begonias occasionally. Removing the very tip of a growing stem encourages the plant to branch out. This results in a fuller, bushier appearance. For Rex begonias, simply remove any old or fading leaves at the base to keep the plant looking tidy. If your Cane begonia becomes too leggy, do not be afraid to prune it back by a third in early spring to encourage fresh, dense growth.
Transitioning Between Indoors and Outdoors
One of the best things about begonias is their portability. You can enjoy them on your patio all summer and then move them inside for the winter. However, plants can experience "shock" if the environment changes too suddenly.
Moving Outdoors in Spring
Wait until all danger of frost has passed and night temperatures are consistently above 50°F. Before moving them permanently, "harden off" your plants. This means placing them in a sheltered, shady spot for a few hours each day. Gradually increase their time outside over a week or two. This allows the leaves to toughen up and adjust to the brighter light and wind.
Moving Indoors in Autumn
As the days get shorter and temperatures drop, it is time to bring your begonias back inside. Do this before the first frost. Check the plants thoroughly for any hitchhiking garden pests. It is a good idea to give the leaves a gentle rinse with water to remove dust and insects.
When they first come inside, begonias may drop a few leaves as they adjust to the lower light levels of your home. This is normal. Simply reduce your watering slightly, as the plant will grow more slowly indoors than it did outside in the sun.
Overwintering Different Begonia Types
How you handle winter depends entirely on the type of begonia you are growing. While some take a total "nap," others simply slow down.
Caring for Tuberous Begonias (Dormancy)
Tuberous begonias naturally want to take a nap during the winter. In the fall, you will notice the leaves starting to yellow and the stems becoming brittle. This is your cue to help the plant prepare for rest.
- Harvesting the Tubers: Once the foliage has died back, carefully lift the tubers from the soil. Brush off the excess dirt but do not wash them with water. Let the tubers sit in a cool, dry, protected area for a few days to "cure."
- Storage: Store the cured tubers in a box filled with dry peat moss or vermiculite. Keep the box in a cool, dark place where temperatures stay around 50°F. In early spring, about six to eight weeks before the last frost, you can bring them out and pot them up again.
Caring for Rex, Cane, and Wax Begonias (Houseplants)
Unlike tuberous types, these do not go dormant. You should keep them indoors as active houseplants.
- Light: Place them in the brightest indirect light possible.
- Water: Reduce watering frequency. Wait until the top two inches of soil are dry.
- Food: Stop fertilizing until you see new growth in the spring.
- Temperature: Keep them away from cold window glass and heating vents.
Caring for Florist (Rieger) Begonias
These often finish their heavy bloom cycle in late winter. After the flowers fade, you can cut the plant back and give it a rest period with very little water. Many gardeners treat these as seasonal and replace them, but they can be kept for another year if moved to a cool, bright spot.
Troubleshooting Pests and Diseases
Whether indoors or outdoors, begonias can occasionally run into trouble. Early detection is the key to saving your plant.
- Powdery Mildew: Look for white, flour-like spots on leaves. This is common when there is high humidity and poor air circulation. Increase airflow and keep leaves dry.
- Root and Stem Rot: If the plant collapses or the base of the stem becomes mushy and black, it is likely overwatered. Ensure the soil is well-draining and let it dry out more between waterings.
- Pests: Keep an eye out for mealybugs (white, cottony clusters), spider mites (tiny webs), and whiteflies. For indoor plants, a gentle wipe with a damp cloth or an application of insecticidal soap can usually manage these hitchhikers.
- Leaf Spot: Small brown spots with yellow halos can indicate a bacterial or fungal infection. Remove the affected leaves immediately and avoid overhead watering.
Simple Steps for Begonia Success
We maintain a trial garden at Longfield Gardens to test how these varieties perform in real-world conditions. Based on our observations, most begonia issues come down to water management. To keep your plants happy, follow these simple rules.
- Check before you water: Stick your finger into the soil. If it feels moist, wait another day. If it feels dry an inch down, give it a drink.
- Focus on the soil: Always use a pot with a hole. If the pot you love doesn't have one, use it as a decorative outer container for a plain plastic pot that does drain.
- Right light, right place: If your plant looks pale and stretched, it needs more light. If it has brown, crispy spots, it likely needs more shade.
- Be patient with blooms: Tuberous begonias take time to get started in the spring. Once they begin blooming, they will continue until the weather turns cold.
Key Takeaway: Success with begonias is not about luck. It is about providing the right balance of light and drainage. If you get those two things right, the plants will do the rest.
Quality You Can Trust
Gardening is a journey, and we want yours to be filled with success. This is why we stand behind the quality of our plants. At Longfield Gardens, we ensure that our flower bulbs and begonias are true to variety and arrive at your door in prime condition.
If you ever experience a quality or labeling issue, we encourage you to contact us promptly after delivery. If a plant fails to perform as expected during its first growing season, we are here to help with a replacement or store credit. We want you to feel confident every time you plant one of our varieties in your home or garden. For shipping details, see our Shipping Information.
Conclusion
Whether you choose to grow begonias indoors or out, you are adding a touch of tropical elegance to your life. These plants are remarkably forgiving and offer a visual reward that far outweighs the effort required to care for them. By matching the variety to your light levels and keeping a close eye on moisture, you can enjoy begonias year-round.
- Choose Rex begonias for stunning indoor foliage.
- Select Tuberous varieties for breathtaking outdoor summer blooms.
- Always ensure your pots have excellent drainage.
- Transition plants slowly when moving them between environments.
Gardening is a rewarding and accessible activity for everyone. With a few simple steps, you can create a beautiful space that brings joy to your home every single day.
If you are ready to start your begonia journey, you can count on our team at Longfield Gardens for quality plants and practical support. We look forward to seeing what you create in your own unique garden space.
FAQ
Can I grow begonias in full sun?
Most begonias prefer shade or filtered light, but wax begonias are the exception. These tough plants can handle more direct sunlight than other varieties, especially in northern climates. However, in very hot regions, even wax begonias appreciate some protection from the intense afternoon sun. For more on sun tolerance, see Is a Begonia a Shade Plant?
How often should I water my indoor begonia?
There is no set schedule because it depends on the light and humidity in your home. The best method is the "finger test." Stick your finger one inch into the soil; if it feels dry, it is time to water. Always make sure the pot has drainage holes so excess water can escape.
Do begonias come back every year?
Begonias are tender perennials, meaning they can live for many years but do not survive freezing temperatures. In warm climates (Zones 9-11), they can stay outside year-round. In cooler areas, you must bring them indoors as houseplants or store the tubers in a cool, dry place over the winter. If you want help timing shipments and planting, review our Shipping Information.
Why are the leaves on my begonia turning brown?
Brown, crispy edges on the leaves usually mean the plant is getting too much direct sunlight or the air is too dry. Try moving the plant further away from a sunny window or into a more shaded part of the garden. If the plant is indoors, increasing the humidity with a pebble tray can also help.
How do I know if my begonia is better for foliage or flowers?
Generally, Tuberous and Florist begonias are grown for their rose-like flowers. Rex begonias are grown almost exclusively for their colorful, textured leaves. Wax and Cane-stemmed begonias offer a balance of both, providing steady blooms alongside attractive foliage.
