Table of Contents
- Introduction
- The Versatile World of Begonias
- Begonias as Outdoor Plants
- Begonias as Indoor Plants
- Matching Light to the Location
- The Seasonal Transition: Moving Plants In and Out
- Watering and Soil: The Foundation of Health
- Caring for Tuberous Begonias
- Managing Humidity for Indoor Success
- Common Challenges and Easy Wins
- Choosing the Right Begonia for You
- Conclusion
- FAQ
Introduction
Begonias are among the most versatile and rewarding plants you can add to your collection. Whether you are looking to brighten a shady corner of your backyard or add a splash of sophisticated color to your living room, these begonias are up to the task. At Longfield Gardens, we enjoy how begonias bridge the gap between the garden and the home, offering a stunning variety of textures and colors that work in almost any setting.
This guide is designed for gardeners of all experience levels who want to understand where their begonias will thrive best. We will explore which varieties prefer the open air, which ones love the indoors, and how you can successfully move them between the two. By the end of this article, you will feel confident choosing the right spot for your plants to ensure they grow beautifully.
The simple truth is that begonias can be both indoor and outdoor plants, provided you match the specific variety to the right environment.
The Versatile World of Begonias
When you ask if a begonia belongs inside or outside, the answer depends entirely on the type of begonia you have and the climate where you live. Most begonias are tropical or subtropical in origin. This means they love warmth and humidity but are very sensitive to frost. Because of this, many gardeners in the United States grow them as outdoor annuals in the summer and bring them indoors or store them once the weather turns cold.
There are over 2,000 species of begonias, but for most home gardeners, they fall into a few begonia types. Some are grown primarily for their massive, rose-like flowers, while others are prized for their metallic, swirling, or polka-dotted leaves. Understanding these groups is the first step in deciding whether your plant should sit on a patio table or a bookshelf.
Begonias as Outdoor Plants
In the garden, begonias are the "problem solvers." While many flowering plants demand full, blazing sun to produce blooms, begonias excel in the shade. They are perfect for those spots under a large tree, on a north-facing porch, or tucked into a garden bed that only gets dappled light.
Tuberous Begonias for the Landscape
Tuberous begonias are the stars of the outdoor shade garden. We offer these in many forms, including upright varieties with large, dinner-plate flowers and trailing types that spill elegantly over the sides of hanging baskets. These plants grow from a thick, potato-like structure called a tuber.
Outdoors, they provide a long season of color from mid-summer right through the first frost. They prefer a spot with "dappled" sunlight—think of the light that filters through the leaves of a tree. Direct, midday sun can be too intense and may scorch their tender leaves, so a protected spot is always best.
Wax Begonias for Bedding
Wax begonias are another outdoor favorite. You can recognize them by their fleshy, succulent stems and shiny, waxy leaves that are either green or bronze. These are incredibly hardy for an annual and can handle a bit more sun than their tuberous cousins. They are often used as "bedding plants," meaning they are planted in large groups to create a carpet of color along walkways or in the front of garden borders.
The Hardy Begonia Exception
Most begonias will not survive a freeze. However, there is one notable exception: Begonia grandis, commonly known as the hardy begonia. In many parts of the US, this plant can stay in the ground year-round. It produces lovely pink flowers in late summer and returns every spring. If you live in a cooler zone and want a begonia that stays outdoors permanently, this is your best option.
Key Takeaway: Outdoor begonias are ideal for adding bright color to shady areas. They thrive in dappled light and well-draining soil but must be protected from freezing temperatures.
Begonias as Indoor Plants
Many begonias are perfectly happy living indoors year-round. In fact, their natural preference for lower light levels makes them much easier to care for than many other "finicky" houseplants. If you have a room with bright, indirect light, you have a perfect home for a begonia.
Rex Begonias: The Foliage Kings
Rex begonias are almost exclusively grown for their leaves. These plants offer an incredible array of patterns—spirals, stripes, and spots in shades of silver, purple, burgundy, and emerald green. Because they don't need a lot of sun to stay colorful, they are a top choice for indoor spaces. They stay relatively compact, making them perfect for side tables or desks.
Cane and Angel Wing Begonias
Cane begonias get their name from their long, bamboo-like stems. The most famous of these is the Angel Wing begonia, which has leaves shaped like—you guessed it—wings. These plants can grow quite tall and often produce clusters of drooping flowers. Indoors, they add a wonderful vertical element to your plant collection. They are very sturdy and can live for many years inside the home with basic care.
Rieger and Elatior Begonias
If you have ever bought a "florist begonia" at a grocery store or garden center in the winter, it was likely a Rieger or Elatior type. These are hybrid begonias specifically bred to bloom during the darker months of the year. While they are often treated as temporary "gift plants," they can be kept as long-term houseplants if you provide them with a cool spot and plenty of bright, indirect light.
Matching Light to the Location
One of the most important factors in deciding if your begonia should be an indoor or outdoor plant is the available light. Light is the "food" for your plant, and getting the amount right is the key to success.
Understanding Indirect Light
Most begonias prefer "bright, indirect light." Indoors, this means a spot near a window where the sun doesn't shine directly on the leaves. A window facing east is often perfect because it provides gentle morning sun. If you have a south-facing window, you might want to pull the plant back a few feet or use a sheer curtain to soften the rays.
Sun Tolerance Outdoors
When planting outdoors, remember that "shade" doesn't mean "darkness." Begonias still need light to produce flowers. The goal is to find a spot that mimics a forest floor. If you notice your outdoor begonias aren't blooming well, they might need a bit more light. If the leaves look pale or have brown, crispy edges, they are likely getting too much sun.
A Note on Leaf Color
A simple trick we use is looking at the color of the leaves. Varieties with darker, bronze-colored leaves can usually handle more sun than those with bright green or variegated leaves. The darker pigment acts like a natural sunscreen for the plant.
The Seasonal Transition: Moving Plants In and Out
Many gardeners enjoy the "best of both worlds" by moving their begonias outdoors for the summer and bringing them back inside for the winter. This "summer vacation" can provide the plants with a boost of humidity and fresh air that makes them grow much faster than they would indoors.
Moving Outdoors in Spring
When the danger of frost has passed and nighttime temperatures are consistently above 50°F, you can move your indoor begonias outside. If you're ordering new plants, see our Shipping Information for timing by zone. However, do not move them directly into the sun. They need time to "harden off."
- Start by placing the pot in a fully shaded, protected spot for a few hours a day.
- Gradually increase the amount of time they spend outside over the course of a week.
- Eventually, move them to their permanent summer home in the shade or dappled sun.
Bringing Plants Inside in Fall
As summer ends, you must keep an eye on the weather. Begonias should be brought back inside before temperatures drop below 50°F. If a surprise frost hits, it can turn the succulent stems of a begonia to mush overnight.
Before bringing them in, we recommend giving them a gentle rinse with water to remove any hitchhiking insects. Check the undersides of the leaves and the soil surface. Once inside, place them in a bright spot and be careful not to overwater, as plants grow more slowly indoors and need less moisture.
Watering and Soil: The Foundation of Health
Whether your begonia is in a garden bed or a ceramic pot on your windowsill, the rules for watering and soil remain the same. Begonias have thick, fleshy stems that store water. This makes them somewhat tolerant of a missed watering, but it also means they are very sensitive to "wet feet."
The Importance of Drainage
Drainage is simply the ability of water to move through the soil and away from the roots. Begonias will quickly rot if they sit in soggy soil, so keep an eye on well-draining soil.
- For indoor pots: Always use a container with a drainage hole at the bottom. Use a high-quality, peat-based potting mix that feels light and "fluffy."
- For outdoor beds: If your garden soil is heavy clay, we suggest planting begonias in raised beds or containers. You can also mix in some compost to help loosen the soil.
The "Finger Test" for Watering
Avoid watering on a strict schedule. Instead, water when the plant actually needs it. Stick your finger about an inch into the soil. If it feels dry, it's time to water. If it still feels damp, wait a day or two. When you do water, do it thoroughly until water runs out the bottom of the pot, then let the soil dry out slightly before the next round.
Key Takeaway: Proper watering is about balance. Keep the soil "evenly moist" but never "waterlogged." Using a pot with holes and a light soil mix is the easiest way to get this right.
Caring for Tuberous Begonias
Since tuberous begonias are a major part of many gardens, they deserve a little extra attention. These plants are unique because they have a defined growing and resting cycle.
Starting Tubers Indoors
In many parts of the country, the growing season isn't long enough for tuberous begonias to reach their full potential if you wait to plant them outside. We recommend starting your tubers indoors about 6 to 8 weeks before the last frost date. Place the tubers in a shallow tray of moist potting mix with the "hollow" side facing up.
The Dormancy Period
Unlike Rex or Cane begonias, tuberous begonias need a rest in the winter. In the fall, you will notice the leaves starting to turn yellow and the plant looking a bit tired. This is a natural part of the cycle.
- Stop watering the plant and let the foliage die back naturally.
- Once the stems fall away, gently lift the tuber from the soil.
- Shake off the dirt and let the tuber dry in a cool, dark place for a few days.
- Store the dry tubers in a box of peat moss or sawdust in a cool (but not freezing) basement until next spring.
This cycle allows you to enjoy the same spectacular flowers year after year, making tuberous begonias a wonderful investment for your garden. For more season-long tips, see Tips for Growing Tuberous Begonias.
Managing Humidity for Indoor Success
One challenge of keeping begonias as indoor plants is the lack of humidity, especially during the winter when heaters are running. Begonias are tropical plants that love moist air. For a broader look at begonia types and care, see All About Begonias. If the air is too dry, you might see the edges of the leaves turning brown or the flower buds dropping before they open.
Easy Ways to Boost Humidity
You don't need to turn your home into a jungle to keep begonias happy. Here are a few simple tricks:
- The Pebble Tray: Fill a shallow tray with small stones and add water until it is just below the top of the stones. Place your begonia pot on top. As the water evaporates, it creates a "microclimate" of humidity around the leaves.
- Grouping Plants: Plants naturally release moisture through their leaves. By grouping several plants together, you create a pocket of humid air that benefits the whole group.
- Misting the Air: You can lightly mist the air around your plants, but be careful not to soak the leaves themselves, as this can sometimes lead to fungal issues.
Common Challenges and Easy Wins
Gardening should be a rewarding experience, and begonias are generally very cooperative. However, if your plant looks a little "off," it’s usually one of three things: light, water, or air.
Leggy Stems
If your indoor begonia is growing very long, thin stems with a lot of space between the leaves, it is "reaching" for more light. This is a simple fix. Move the plant to a brighter window or a spot closer to the light source. You can also "pinch back" the stems—simply snip off the growing tip—to encourage the plant to grow bushier and more compact.
Powdery Mildew
Sometimes, especially in humid outdoor conditions with little airflow, you might see a white, dusty substance on the leaves. This is powdery mildew. The best way to prevent this is to make sure your plants have plenty of space for air to circulate around them. When watering, try to pour the water directly onto the soil rather than over the leaves.
Dropping Leaves
If you just brought a new begonia home or moved one from the garden to the house, it might drop a few leaves. Don't worry! This is often just "transport shock." Begonias like stability. Once they settle into their new environment and adjust to the light and temperature, they will start producing new growth.
Choosing the Right Begonia for You
With so many options, how do you choose? We recommend starting with the space you want to fill.
- For a colorful front porch: Choose Tuberous Begonias in hanging baskets or containers.
- For a shady garden border: Go with Wax Begonias for a consistent carpet of color.
- For a bright bathroom or kitchen: Rex Begonias love the extra humidity these rooms often provide.
- For a long-term office companion: An Angel Wing (Cane) Begonia is sturdy and forgiving.
At Longfield Gardens, we believe that there is a begonia for every gardener. By understanding that these plants can be both indoor and outdoor stars, you open up a world of possibilities for your home and landscape.
Key Takeaway: Success with begonias comes down to "Right Plant, Right Place." Match the variety to your light levels, and you'll be rewarded with months of beauty.
Conclusion
Begonias are a wonderful choice for anyone looking to add vibrant color and interesting textures to their life. Whether you plant them in your garden beds for a summer display or keep them on your windowsill as year-round companions, they are sure to bring a smile to your face. Remember that most begonias are "vacationers" in the garden; they love the summer warmth but appreciate the safety of the indoors when the frost arrives.
By focusing on well-draining soil, indirect light, and careful watering, you can master begonia care with ease. We at Longfield Gardens are proud to provide the high-quality tubers and plants you need to get started on this rewarding journey.
- Pick the right type: Use Rex for foliage indoors and Tuberous for flowers outdoors.
- Watch the light: Aim for bright, indirect, or dappled light.
- Check the soil: Ensure your pots and garden beds drain water away quickly.
- Mind the temperature: Keep begonias above 50°F for the best results.
Gardening is a journey of discovery. Don't be afraid to try different varieties and see which ones thrive best in your unique home and garden environment.
FAQ
Can all begonias live outside?
Most begonias can live outside during the warm summer months, but very few can survive a cold winter. Only the "hardy begonia" (Begonia grandis) is capable of staying outdoors year-round in many parts of the US, depending on your hardiness zone. All other types should be brought inside or their tubers stored before the first frost.
Do begonias need a lot of sun?
Most begonias actually prefer shade or partial shade. While some varieties like wax begonias can handle more sun, the majority will scorch if placed in direct, intense midday sunlight. They thrive best in "dappled" light, similar to what you would find under a tree or on a covered porch.
How often should I water my indoor begonia?
There is no set schedule, as it depends on the humidity and light in your home. Use the "finger test": stick your finger an inch into the soil, and if it feels dry, it is time to water. Always make sure your pot has drainage holes so the plant doesn't sit in water, which can lead to root rot.
Why are the leaves on my begonia falling off?
If you have recently moved your plant, it may be experiencing temporary shock. However, the most common causes for leaf drop are overwatering or a lack of humidity. Ensure you aren't watering too frequently and consider placing the plant on a pebble tray to increase the moisture in the air.