Introduction
Adding a begonia plant to your garden is one of the fastest ways to turn a quiet, shady corner into a vibrant display of color. These plants are beloved by gardeners for their incredible variety, offering everything from delicate, rose-like blooms to bold, metallic-patterned leaves. Whether you are looking to fill a hanging basket on a porch or add texture to a woodland border, there is a begonia that fits the job perfectly.
At Longfield Gardens, we enjoy helping gardeners discover how easy it is to grow these versatile tropical beauties. Begonias are known for being reliable performers that provide nonstop interest from late spring until the first frost of autumn. They are accessible for beginners but offer enough variety to keep experienced plant collectors engaged for years.
In this guide, we will cover the different types of begonias, how to plant them for the best results, and the simple care steps needed to keep them thriving. You will learn how to select the right variety for your specific light conditions and how to maintain them throughout the season. With just a few basic steps, you can enjoy the lush growth and brilliant flowers that make the begonia plant a true garden classic.
Understanding the Different Types of Begonias
To grow a begonia plant successfully, it helps to understand which type you have. While all begonias share some traits, such as fleshy stems and asymmetrical leaves, they are generally grouped by their root systems and growth habits. This classification determines how they should be planted and cared for throughout the year.
Tuberous Begonias
Tuberous begonias are the stars of the summer shade garden. They grow from a thick, potato-like root called a tuber. These varieties are famous for their large, spectacular flowers that can resemble roses, camellias, or carnations. You will find them in two primary growth habits: upright and trailing.
Upright tuberous begonias are excellent for garden beds and window boxes. Trailing types, often referred to as "pendula" begonias, are designed for hanging baskets where their stems can gracefully arch over the sides. These plants are heavy bloomers and come in a wide array of colors, including vibrant reds, soft pinks, sunny yellows, and crisp whites.
Wax Begonias (Fibrous)
Wax begonias are among the most common bedding plants in the United States. They have fibrous roots and are characterized by their glossy, succulent leaves, which may be green, bronze, or mahogany. These plants are compact, usually staying under a foot tall, and produce clusters of small, four-petaled flowers.
One of the great advantages of wax begonias is their resilience. While most begonias prefer shade, many wax varieties—especially those with bronze foliage—can handle more sunlight than their relatives. They are frequently used to edge walkways or create mass plantings in public parks because they are so reliable and low-maintenance.
Rex Begonias
If you love plants with dramatic foliage, the Rex begonia plant is the perfect choice. These are rhizomatous begonias, meaning they grow from thick horizontal stems that sit just at the soil surface. While they do produce flowers, the primary draw is the leaves.
Rex begonias feature swirling patterns, serrated edges, and colors that look like they were painted on by an artist. You will see shades of silver, purple, burgundy, and emerald green. These are popular as houseplants but also work beautifully in shaded outdoor containers where their intricate leaf patterns can be viewed up close.
Cane-Stemmed and Angel Wing Begonias
Cane-stemmed begonias get their name from their tall, upright stems that resemble bamboo. The most famous of these is the "Angel Wing" begonia, named for its long, pointed leaves that look like wings. These leaves often have silver spots or streaks on top and a deep red or purple color on the underside.
These begonias produce large, heavy clusters of drooping flowers that last for a long time. Because they grow tall, they may need a small stake for support. They are excellent transition plants that look great on a patio during the summer and can easily be moved indoors as houseplants for the winter.
Key Takeaway: Identify whether your begonia is tuberous, wax, Rex, or cane-stemmed. This helps you determine the best planting location and how much water and light the plant will need.
Right Plant, Right Place: Where to Grow Begonias
The most important rule for growing a begonia plant is matching it to the right environment. Most begonias evolved as understory plants in tropical forests, which means they prefer filtered light and consistent moisture.
Light Requirements
For the majority of begonias, partial shade is the "sweet spot." This means the plant receives about three to four hours of sun, preferably in the cool morning hours, followed by shade in the afternoon. If a begonia gets too much direct afternoon sun, the leaves may scorch or turn brown at the edges.
If you have a very sunny spot, look for wax begonias with dark, bronze-colored leaves. These have a higher tolerance for heat and light. Conversely, if you have a deep shade area under a large tree, Rex begonias and tuberous varieties will brighten the space without needing much direct light at all.
Soil and Drainage
"Drainage" simply refers to how quickly water moves through the soil. A begonia plant has fleshy stems that hold a lot of water, which makes the plant prone to rot if it sits in soggy soil for too long.
- In Containers: Use a high-quality potting mix that contains perlite or vermiculite to keep the soil light and airy. Ensure the pot has at least one drainage hole in the bottom.
- In Garden Beds: If your soil is heavy clay, it will hold too much water. You can improve this by mixing in organic matter like compost or peat moss before planting. This creates a looser environment where roots can breathe.
Temperature and Humidity
Since begonias are tropical in origin, they love warmth and humidity. They are not frost-tolerant. In most parts of the US, they are grown as annuals or brought indoors for the winter. Wait until the soil is warm and the danger of frost has passed before moving your begonia plant outside. Nighttime temperatures should consistently be above 50°F before you transplant them. For shipping and timing details, see our shipping information.
How to Plant Tuberous Begonias
Since many gardeners start their begonia journey with tubers, it is helpful to know the specific steps for getting them started. Starting tubers indoors a few weeks before the last frost gives the plants a head start, leading to earlier blooms in the summer.
Starting Tubers Indoors
You can start your begonia tubers about 6 to 8 weeks before the last expected frost date in your area. This "waking up" process is simple and rewarding.
- Identify the Top: Look at the tuber. One side will be slightly hollow or indented. This is the top. The rounded side is the bottom.
- Prepare a Tray: Fill a shallow tray or individual pots with moist potting soil.
- Place the Tubers: Press the tubers into the soil with the hollow side facing up. Do not bury them deeply yet; the tops should stay just at or slightly below the soil surface.
- Provide Warmth and Light: Place the tray in a warm spot (around 70°F). You do not need bright light until you see the first sprouts appear.
- Water Sparingly: Keep the soil moist but never wet. If the hollow top of the tuber fills with water and stays that way, it may rot.
Moving Outdoors
Once the sprouts are a few inches tall and the outdoor weather is warm, it is time to move them to their permanent home.
- Spacing: Space upright begonias about 8 to 12 inches apart. Trailing varieties in a hanging basket can be planted more closely—about 3 tubers in a 12-inch basket—to create a full, lush look.
- Depth: When transplanting the sprouted tubers, cover them with about one inch of soil.
- Handle with Care: The new stems are succulent and can snap easily, so handle the plants gently during the transition.
What to do next:
- Check your local frost dates to time your planting.
- Purchase a high-quality, well-draining potting mix.
- Find a warm, draft-free spot indoors to start your tubers.
- Label your trays so you remember which colors are which.
Essential Care for a Begonia Plant
Once your begonia plant is established, it does not require a lot of work. Following a few basic care rules will keep the foliage lush and the flowers blooming all season long.
Watering Correctly
The key to watering begonias is consistency. These plants prefer soil that feels like a wrung-out sponge—damp but not dripping.
- The Finger Test: Stick your finger about an inch into the soil. If it feels dry, it is time to water. If it feels moist, wait another day or two.
- Water at the Base: Try to water the soil directly rather than pouring water over the leaves. Wet foliage in a shaded area can lead to fungal issues like powdery mildew.
- Container Needs: Plants in pots and hanging baskets dry out much faster than those in the ground. During the hottest weeks of summer, you may need to water your container begonias every day.
Fertilizing for Blooms
Begonias are "heavy feeders," meaning they use a lot of nutrients to produce their large leaves and constant flowers. We recommend using a balanced, water-soluble fertilizer.
A "balanced" fertilizer is one where the three numbers on the package (Nitrogen, Phosphorus, and Potassium) are the same or very similar, such as 10-10-10. During the peak growing season, you can apply this fertilizer every two to three weeks. If you are growing Rex begonias for their leaves, a fertilizer with a slightly higher nitrogen count (the first number) can help encourage bigger, brighter foliage.
Deadheading and Pruning
"Deadheading" is the process of removing faded or dead flowers. Many modern begonia varieties, like wax begonias, are "self-cleaning," meaning the old flowers fall off on their own. However, tuberous begonias benefit from manual deadheading. Simply snap off the dead bloom where it meets the stem. This keeps the plant looking tidy and encourages it to put more energy into new flowers.
If your cane-stemmed or wax begonias become "leggy"—meaning the stems are long and thin with few leaves at the bottom—you can pinch back the tips of the stems. This encourages the plant to branch out and become bushier.
Designing with Begonias in the Landscape
At Longfield Gardens, we believe begonias are some of the most versatile plants for adding professional-looking design to your yard. Because they come in so many shapes and sizes, you can use them in almost any part of the garden that isn't in full, blistering sun.
Container Gardening
Begonias are perhaps the ultimate container plant. Their mounding or trailing habits make them perfect "fillers" and "spillers" in the "Thriller, Filler, Spiller" design method.
- Monochromatic Pots: Plant several begonias of the same color but different types in one pot. For example, a tall red Angel Wing begonia in the center surrounded by red wax begonias and trailing red tuberous begonias.
- Contrasting Foliage: Pair the silver-patterned leaves of a Rex begonia with the dark, solid green leaves of a fern or a hosta. The contrast in texture and color makes both plants stand out.
Shaded Borders and Edging
Wax begonias are perfect for creating a clean, colorful edge along a garden path or a flower bed. Because they grow to a uniform height, they act like a living ribbon of color.
For a more natural look in a woodland garden, tuck tuberous begonias among shade-loving perennials like bleeding hearts, astilbe, and caladiums. The begonias will provide bright pops of color that last much longer than the bloom time of many traditional shade perennials.
Indoor Use
Don't forget that many begonias make excellent houseplants. Rex and Angel Wing varieties are particularly well-suited for indoor life. They appreciate the stable temperatures of a home. Place them in a room with bright, indirect light—like near an east-facing window—and they will provide year-round greenery. If you want more guidance on indoor selection, see our Rex begonia shopping tips.
Overwintering: How to Save Your Begonias
Because the begonia plant is a tropical perennial, you don't have to buy new ones every year. If you live in a cold climate, you can "overwinter" them by bringing them into a protected space.
Saving Tuberous Begonias
This is the easiest type of begonia to save. As the weather cools in the fall, the plant will naturally start to turn yellow.
- Stop Watering: In late September or early October, stop watering the plant. This signals to the tuber that it is time to go to sleep.
- Dig Up the Tubers: After the first light frost kills the top growth, gently lift the tubers out of the soil.
- Clean and Dry: Cut off the dead stems about an inch above the tuber. Brush off the loose soil and let the tubers dry in a cool, dry place for about a week.
- Store: Place the dry tubers in a box filled with peat moss, sawdust, or shredded paper. Store the box in a cool, dark, frost-free area (like a basement or crawl space) where temperatures stay around 40-50°F.
Saving Other Types
Wax, Rex, and Cane begonias do not have tubers, so they cannot be stored dry. To save these, you must bring the entire plant indoors before the first frost. Treat them as houseplants throughout the winter. They may lose a few leaves as they adjust to the lower light and humidity of your home, but they will bounce back once they are moved outside again in the spring.
Key Takeaway: Overwintering is a cost-effective way to enjoy your favorite plants year after year. Tuberous types are stored dry, while others stay in pots as houseplants.
Troubleshooting Common Issues
While begonias are generally easy to care for, you might encounter a few minor hurdles. Most of these can be fixed by adjusting how you water or where the plant is sitting.
Powdery Mildew
This looks like a dusting of white flour on the leaves. It usually happens when there is not enough air moving around the plant or when the leaves stay wet for too long.
- The Fix: Increase the space between your plants to improve airflow. Always water at the base of the plant, and avoid watering late in the evening so the soil doesn't stay soggy all night.
Dropping Buds or Leaves
If your begonia plant is suddenly dropping its flower buds before they open, or if it is losing green leaves, it is usually a sign of stress.
- The Fix: Check the soil. Bud drop is often caused by the soil drying out completely or by a sudden, extreme change in temperature. Try to keep the environment as stable as possible.
Leggy Growth
When a plant has very long stems with large gaps between the leaves, it is usually "reaching" for more light.
- The Fix: Gradually move the plant to a slightly brighter location. You can also pinch back the long stems to encourage the plant to grow more leaves closer to the base.
Safety Note: Begonias and Pets
It is important to note that the begonia plant contains calcium oxalates, which can be toxic to cats and dogs if ingested. The most concentrated amount of these crystals is found in the roots or tubers. If you have pets that like to dig or chew on plants, it is best to keep your begonias in hanging baskets or on high shelves where they are out of reach. If you suspect your pet has eaten part of a begonia, contact your veterinarian for guidance.
Conclusion
The begonia plant is a rewarding addition to any garden, offering a unique combination of spectacular flowers and stunning foliage. By choosing the right variety for your light conditions and ensuring the soil has good drainage, you can enjoy a long season of beauty with very little effort. Whether you are planting a formal border or a single decorative pot, these plants bring a touch of tropical elegance to the home landscape.
- Select the right type: Tuberous for big blooms, Rex for foliage, and Wax for easy bedding.
- Provide partial shade and well-draining soil to prevent root issues.
- Fertilize regularly during the growing season to keep the plant vigorous.
- Overwinter tubers in a cool, dry place to enjoy them again next year.
We invite you to explore the many colors and textures available at Longfield Gardens to find the perfect begonia for your yard. With a bit of water and the right spot in the shade, your garden will be transformed into a lush, colorful retreat.
"Gardening with begonias is all about enjoying the process. From the first sprout on a tuber to the final frost of the season, these plants provide a consistent and joyful presence in the garden."
FAQ
Can a begonia plant grow in full sun?
Most begonias prefer partial or full shade. However, certain varieties of wax begonias, especially those with bronze or dark foliage, can tolerate more sun if they are kept well-watered. In northern climates, begonias can generally handle more sun than they can in the hot, intense heat of the southern US.
How often should I water my begonias?
You should water your begonias whenever the top inch of soil feels dry to the touch. This typically means watering once or twice a week for plants in the ground, and potentially every day for plants in containers or hanging baskets during hot weather. Always check the soil moisture before adding more water.
Why are my begonia leaves turning yellow?
Yellow leaves are usually a sign of overwatering or poor drainage. If the soil stays too wet, the roots cannot breathe, which leads to yellowing foliage and eventual rot. Ensure your pots have drainage holes and allow the soil to dry slightly between waterings to keep the plant healthy.
Do begonias come back every year?
In tropical climates (USDA zones 9–11), begonias can live outdoors year-round. In colder zones, they will die in the winter unless they are brought indoors. Tuberous begonias can be stored as dry tubers in a cool basement, while other types can be kept as indoor houseplants until spring.
