Introduction
Finding the perfect spot for a new plant is one of the most rewarding parts of gardening. When you see those first vibrant blooms or lush, patterned leaves emerge, you know you have chosen the right home for them. Begonias are particularly satisfying because they offer an incredible range of colors and textures that can brighten up even the quietest corners of your yard.
We love begonias at Longfield Gardens because they are versatile, dependable, and surprisingly easy to grow. Whether you are looking for trailing flowers for a hanging basket or sturdy bedding plants for a shaded border, there is a begonia that fits the bill. These plants are famous for their ability to thrive in areas where many other flowers struggle, making them a favorite for gardeners of all skill levels.
This guide will help you understand exactly where begonias should be planted to ensure they flourish all season long. We will cover lighting requirements, soil preferences, and the best locations in your landscape and home for these beautiful plants. By matching the right variety to the right spot, you can enjoy a spectacular display of color from late spring until the first frost.
Understanding Begonia Types and Their Needs
Before choosing a location, it is helpful to know which type of begonia you are growing. While they all share some common traits, their preferred "where" can vary based on their growth habit and foliage. Most begonias found in home gardens fall into four main categories.
Tuberous Begonias
Tuberous begonias are the superstars of the shade garden. They grow from a potato-like tuber and produce some of the largest, most spectacular flowers in the begonia family. You will find them in two main forms: upright and trailing. Upright varieties are excellent for garden beds and pots, while trailing types like the Double Delight series are perfect for hanging baskets. These begonias generally prefer cooler temperatures and plenty of shade.
Wax Begonias
Also known as fibrous begonias, these are the classic bedding plants often seen in parks and formal gardens. They have a compact, mounding habit and waxy, succulent-like leaves that come in green or bronze. Wax begonias are remarkably tough. They are more tolerant of heat and sun than tuberous types, making them a great choice for areas that get a bit more light throughout the day.
Cane and Angel Wing Begonias
These begonias are named for their upright, bamboo-like stems. Many varieties, such as the Dragon Wing series, feature long, elegant leaves that resemble wings. They can grow quite tall, sometimes reaching several feet in a single season. Because of their height and dramatic form, they are often used as "thriller" plants in large containers or as focal points in the garden.
Rex and Rhizomatous Begonias
These varieties are primarily grown for their stunning foliage rather than their flowers. Rex begonias feature leaves with intricate patterns in shades of silver, purple, burgundy, and emerald green. They grow from a rhizome, which is a thick stem that creeps along the soil surface. Because they are adapted to the forest floor, they are the ultimate choice for deep shade and indoor locations.
Key Takeaway: Identifying your begonia type is the first step. Tuberous and Rex types love deep shade, while Wax begonias can handle more sun.
Choosing the Right Lighting Conditions
Lighting is the most important factor when deciding where to plant your begonias. Most begonias are native to tropical forest understories, meaning they have evolved to thrive in filtered light. However, the exact amount of light they need depends on the variety and your local climate.
The Beauty of Dappled Shade
For most begonias, "dappled shade" is the golden rule. This is the kind of light you find under a leafy tree where the sun filters through the branches. It provides enough energy for the plants to produce flowers without the intensity that can scorch their delicate leaves. If you have a spot that receives bright, indirect light all day, your begonias will be very happy there.
Morning Sun vs. Afternoon Sun
If you are planting in an area that gets direct sunlight, aim for morning sun. The sun's rays are much cooler and less intense before noon. Afternoon sun, especially in the heat of the summer, can be too harsh for most begonias. If your chosen spot gets more than four hours of direct afternoon sun, you may notice the leaves turning brown at the edges or the flowers wilting. In these cases, it is better to move the plants to a more sheltered location.
Sun-Tolerant Varieties
If you have a sunny spot that needs color, look for wax begonias or hybrid varieties like the Surefire series. These have been bred to handle more light than traditional types. Bronze-leaved varieties are generally more sun-tolerant than green-leaved ones because the dark pigment helps protect the foliage from UV rays. Even these sun-tolerant types appreciate a break from the heat during the hottest part of the day.
Deep Shade Options
If you have a corner of the porch or a spot under a heavy evergreen canopy that gets very little light, Rex begonias are your best bet. Because they are grown for their leaves, they do not need the extra energy required to produce large blooms. They will keep their intense colors and patterns even in low-light conditions where other flowering plants might turn pale and leggy.
Finding the Perfect Soil Conditions
Once you have identified a spot with the right light, the next thing to consider is the soil. Begonias have a relatively shallow and delicate root system. They are very sensitive to "wet feet," which is what happens when the soil stays saturated for too long.
The Importance of Drainage
Drainage refers to how fast water leaves the soil. If you see puddles lasting more than an hour after a heavy rain, the drainage is likely poor. Begonias planted in heavy, soggy soil are at risk of root rot. To test your soil, dig a small hole and fill it with water. If it takes a long time to empty, you should consider planting in a raised bed or a container instead.
Improving Garden Soil
Most garden soil can be improved with a little bit of organic matter. We suggest adding compost, peat moss, or finely shredded bark to your planting area. These materials help "fluff up" the soil, creating tiny air pockets that allow roots to breathe. They also help the soil hold onto just the right amount of moisture without becoming waterlogged. Begonias prefer a slightly acidic soil pH, and organic matter naturally helps maintain this balance.
Potting Mix for Containers
If you are planting in pots, avoid using "garden soil" or "topsoil" from the bag. These are often too heavy and will compact over time. Instead, use a high-quality potting mix. These mixes are specifically designed for containers and usually contain a blend of peat, perlite, and vermiculite to ensure excellent drainage and aeration.
What to do next:
- Observe your yard at different times of the day to track sun and shade patterns.
- Dig a small test hole to check how quickly your soil drains.
- Purchase a high-quality potting mix if you plan to use containers.
- Incorporate a few inches of compost into your garden beds before planting.
Planting Begonias in the Garden Landscape
When planting directly in the ground, think about how the begonias will interact with the rest of your landscape. Their low-growing, mounding habit makes them excellent for several specific uses.
Edging and Borders
Wax begonias are classic choices for the front of a flower border. Because they stay relatively short (usually 6 to 12 inches), they create a neat, colorful edge that defines the shape of your garden bed. Planting them in a long row or a gentle curve draws the eye along the path and creates a sense of order.
Mass Plantings
For a high-impact look, try mass planting. This simply means planting a large group of the same variety close together. A "carpet" of red or pink begonias under a large shade tree can transform a dark, empty space into a vibrant focal point. At our trial gardens at Longfield Gardens, we have found that massing begonias is one of the most effective ways to create a professional-looking landscape with minimal effort.
Under Trees and Large Shrubs
Many plants struggle to grow under the canopy of large trees because of the shade and competition for water. Begonias are one of the few exceptions. As long as you provide them with consistent moisture and a little bit of supplemental fertilizer, they will thrive in the dappled light beneath your trees. Just be careful not to dig too deep and damage the tree’s roots when planting your begonias.
Creating Vertical Interest with Cane Begonias
If your garden bed feels a bit flat, use cane-type begonias to add height. Placing a tall Angel Wing begonia in the middle of a bed of lower-growing hostas or ferns creates a beautiful layered effect. Their upright stems and clusters of drooping flowers add a tropical feel to temperate gardens.
Where to Plant Begonias in Containers
Containers offer the most flexibility when it comes to begonia placement. You can move them around to find the perfect light or bring them closer to your seating areas where you can enjoy their detail.
Hanging Baskets on Porches
Hanging baskets are the natural home for trailing tuberous begonias. A covered porch is often the ideal location because the roof provides protection from the hot afternoon sun and heavy rain. When hanging your baskets, make sure they are not in a spot where they will be battered by strong winds, as begonia stems can be somewhat brittle.
Window Boxes
Window boxes filled with wax begonias or compact tuberous varieties add instant curb appeal. Since window boxes are usually attached to the house, pay attention to which direction the window faces. A north-facing or east-facing window is usually perfect. A south-facing window might get too hot, so you would want to use the most sun-tolerant varieties available.
Decorative Pots on Patios and Decks
A large decorative pot can act as a mobile garden. You can tuck a pot of begonias into a corner of the patio that needs a splash of color. If you are using a very large container, you can mix begonias with other shade-loving plants. They look wonderful when paired with coleus, caladiums, or trailing ivy.
The "Filler, Thriller, Spiller" Technique
When planting a container, many gardeners use the "filler, thriller, spiller" method.
- Thriller: Use a tall cane begonia in the center for height.
- Filler: Use wax begonias or foliage-heavy Rex begonias to fill in the space around the base.
- Spiller: Use trailing tuberous begonias or a variety like the Double Delight series to spill over the edges of the pot.
Key Takeaway: Containers allow you to provide the exact soil and light begonias need, even if your yard has heavy clay or too much sun.
Indoor Placement for Begonias
Many begonias make excellent houseplants, especially the Rex and Cane varieties. Because our homes are generally kept at a comfortable temperature, these tropical plants can feel right at home indoors.
Finding the Right Window
Indoors, the best place for a begonia is near an east-facing or west-facing window. An east-facing window provides gentle morning light, which is ideal. A west-facing window offers brighter light in the afternoon; if it feels too hot, you can move the plant a few feet back from the glass or use a sheer curtain to diffuse the rays. North-facing windows can work for Rex begonias, but flowering types might not get enough energy to bloom well there.
Humidity and Airflow
Begonias love humidity, which can be a challenge in climate-controlled homes. To keep them happy, avoid placing them directly in the path of air conditioning vents or heating ducts, which can dry out their leaves. Bathrooms and kitchens often have higher natural humidity, making them great spots for Rex begonias. You can also place the pot on a tray filled with pebbles and a little water to increase the local humidity around the plant.
Indoor Safety for Pets
It is important to note that begonias are considered toxic to cats and dogs if ingested. The most toxic part of the plant is the underground portion (the tuber or rhizome), but the leaves and stems can also cause irritation. If you have curious pets, place your indoor begonias on high shelves or in hanging planters where they are safely out of reach.
Geographic Considerations: Zones and Weather
Because begonias are tropical in origin, their "where" also depends on your local climate and the time of year.
USDA Hardiness Zones
In the United States, begonias are only perennial (meaning they live for multiple years outdoors) in USDA zones 9 through 11. In these warm, frost-free regions, you can leave them in the ground year-round. In all other zones (2 through 8), begonias are grown as annuals. This means they will grow beautifully all summer but will not survive the winter outdoors once temperatures drop.
Temperature and Timing
Begonias are very sensitive to the cold. We recommend waiting to plant them outside until the soil has warmed up and the nighttime temperatures are consistently above 60°F. If you plant them too early in the spring, the cool soil can cause the tubers to sit dormant or even rot. A little patience goes a long way with these heat-loving plants.
Protecting from the Elements
Even in the perfect spot, extreme weather can happen. If a heavy storm is predicted, move your container begonias to a sheltered area. For begonias in the ground, the best protection is a location that is naturally shielded from the wind by a fence, a hedge, or the side of the house. This prevents the heavy flower heads from snapping the stems.
Spacing and Depth Requirements
Getting the physical placement right is just as important as the location. Giving your plants enough room ensures they have the airflow they need to stay healthy.
Proper Spacing
When planting in the garden, space wax begonias about 6 to 8 inches apart. Larger tuberous or cane varieties should be spaced 10 to 12 inches apart. It can be tempting to plant them closer together for an "instant" full look, but they will fill in quickly. Proper spacing allows air to circulate around the leaves, which is the best way to prevent fungal issues like powdery mildew.
Correct Planting Depth
When planting begonia tubers, depth is key. Dig a shallow hole and place the tuber with the indented (hollow) side facing up. This is where the new sprouts will emerge. Cover the tuber with only about half an inch to an inch of soil. If you bury them too deep, the sprouts may struggle to reach the surface. For nursery-grown transplants, plant them at the same depth they were in their original pot.
Summary of Next Steps:
- Wait until nighttime temperatures are reliably above 60°F before planting outdoors.
- Space plants 8-12 inches apart to allow for growth and airflow.
- Plant tubers hollow-side up and only cover with an inch of soil.
- Choose a location protected from strong winds to prevent stem breakage.
Conclusion
Begonias are a wonderful addition to any garden, offering a reliable source of color and texture that lasts for months. By choosing a location with dappled shade, well-draining soil, and protection from the elements, you are setting your plants up for a successful season. Whether they are lining a garden path, brightening up a shaded porch, or adding a touch of the tropics to your living room, begonias never fail to impress.
At Longfield Gardens, we believe that gardening should be a source of joy and relaxation. Taking the time to find the right spot for your begonias is a simple step that leads to big rewards. Once they are settled in, these low-maintenance beauties will reward you with nonstop blooms and stunning foliage from spring until the first frost.
"Finding the right home for your begonias is the secret to a season full of color. Give them the shade and drainage they crave, and they will do the rest of the work for you."
We invite you to explore the many varieties available and find the perfect match for your unique garden spaces. Happy planting!
FAQ
Can begonias grow in full sun?
Most begonias prefer shade or partial shade, but wax begonias and certain hybrids like the Surefire series can tolerate more sun. If you plant them in a sunny spot, ensure they have plenty of water and try to choose varieties with bronze-colored leaves, as these handle heat and light better than green-leaved types.
How often should I water my begonias?
Begonias like to stay consistently moist but never soggy. A good rule of thumb is to check the soil with your finger; if the top inch feels dry, it is time to water. Always water at the base of the plant to keep the leaves dry, which helps prevent spots and fungal diseases.
Why are the leaves on my begonia turning brown?
Brown edges on begonia leaves are usually a sign of too much direct sun or low humidity. If your plant is in a sunny spot, try moving it to an area with more shade. If it is an indoor plant, try increasing the humidity by placing it near other plants or using a pebble tray.
Do I need to remove dead flowers from my begonias?
Many modern begonia varieties, such as the Surefire and Dragon Wing series, are "self-cleaning," meaning the old flowers fall off on their own. However, for tuberous begonias, removing spent blooms (a process called deadheading) can help the plant look tidier and may encourage more flowers to grow.
