Table of Contents
- Introduction
- The Short Answer: It Depends on Your Zone
- Identifying the Different Types of Begonias
- Growing Begonias as Annuals: The Easy Route
- Growing Begonias as Perennials in Warm Climates
- How to Overwinter Tuberous Begonias
- Turning Begonias into Houseplants
- Essential Care for Long-Lasting Begonias
- Common Myths About Begonia Lifespans
- Choosing the Best Varieties for Your Garden
- Troubleshooting: Why Is My Begonia Not Returning?
- Designing with Begonias
- Conclusion
- FAQ
Introduction
There is a unique kind of excitement that comes with finding the perfect plant for a shady corner of the garden. For many of us, begonias are that "aha!" moment. With their lush foliage and flowers that seem to glow in the filtered light, they bring a sense of tropical luxury to any porch, patio, or flower bed. Whether you are falling in love with the massive, rose-like blooms of tuberous varieties or the reliable, waxy leaves of bedding begonias, these plants are a cornerstone of a beautiful summer landscape.
At Longfield Gardens, we want to help you make the most of these versatile begonia flower bulbs. One of the most common questions we hear from home gardeners is whether begonias are annuals or perennials. The answer is a bit of a "choose your own adventure" depending on where you live and how much effort you want to put into your garden. Understanding how these plants grow is the first step toward enjoying their vibrant colors year after year.
This guide will clarify the annual versus perennial debate, explain the different types of begonias you might encounter, and provide practical steps for keeping them healthy regardless of your climate. We will also share simple techniques for overwintering tuberous begonias so you can decide which approach fits your lifestyle. Biologically, begonias are perennials, but for most gardeners in the United States, they are best enjoyed as summer annuals or cherished houseplants.
The Short Answer: It Depends on Your Zone
In the world of botany, begonias are classified as perennials. This means that in their natural, tropical habitats, they do not die off after one season. Instead, they continue to grow and bloom for many years. However, because begonias are native to warm regions in Central and South America, Africa, and Asia, they have no natural defense against freezing temperatures.
For the majority of gardeners in the United States—specifically those living in USDA hardiness zones 2 through 8—begonias cannot survive the winter outdoors. In these regions, they are treated as "tender perennials" or "annuals." This means you plant them in the spring, enjoy them all summer, and they succumb to the first hard frost of autumn.
If you are lucky enough to live in a frost-free climate, such as parts of Florida, Arizona, or Southern California (Zones 9–11), your begonias may stay in the ground year-round. Even in these warm areas, the plants often appreciate a period of rest or dormancy during the cooler months to stay vigorous for the following spring.
Key Takeaway: While begonias are biologically perennials, they are "tender," meaning they lack frost tolerance. Most American gardeners treat them as annuals unless they choose to bring them indoors for the winter.
Identifying the Different Types of Begonias
To understand how to care for your plants, you first need to know which type you are growing. The begonia family is vast, with over 2,000 species, but most home gardeners interact with three main categories. For a broader overview, see All About Begonias. Each has a slightly different relationship with the "annual or perennial" labels.
Wax Begonias (Fibrous Rooted)
These are the classic bedding plants often found in six-packs at local garden centers. They are recognized by their succulent, waxy leaves (which can be green or bronze) and small, prolific flowers in shades of red, white, and pink. Because they are inexpensive and easy to mass-plant, most people grow these as strictly annuals. They have fibrous root systems that are quite delicate.
Tuberous Begonias
These are the showstoppers of the shade garden. They grow from a thickened underground stem called a tuber. Tuberous begonias, like the popular Nonstop series we offer at Longfield Gardens, produce large, dramatic flowers that can resemble roses or camellias. Because the plant’s energy is stored in a tuber, these are the easiest types to "save" and grow as perennials by digging them up and storing them in a cool, dry place over the winter.
Rhizomatous and Cane Begonias
This group includes the famous Rex begonias, known for their incredible leaf patterns, and Angel Wing begonias, which have upright, bamboo-like stems. These are often grown as perennials because they make excellent houseplants. Many gardeners move them outdoors for the summer to enjoy the humidity and then bring them back inside before the weather turns cold.
Growing Begonias as Annuals: The Easy Route
Many busy gardeners prefer the simplicity of treating begonias as annuals. There is a certain freedom in starting fresh each spring, perhaps trying a new color or a different variety to change the look of your window boxes. When you grow begonias as annuals, your goal is maximum performance over a single, glorious season.
To get the best results from your annual begonias, wait to plant them until the soil is warm and all danger of frost has passed. Planting too early into cold, wet soil can stunt their growth or cause the stems to rot. Most begonias thrive in bright shade—a spot that gets plenty of light but is protected from the harsh, direct rays of the afternoon sun.
Annual begonias are wonderful "filler" plants. They play well with others in containers, such as coleus, ferns, or fuchsias. Since you aren't worried about the plant surviving the winter, you can focus entirely on keeping it fed and watered so it stays covered in blooms until the first frost arrives.
What to Do Next for Annual Success
- Wait for nighttime temperatures to stay consistently above 50°F before planting.
- Use a high-quality potting mix that drains quickly to keep the roots happy.
- Mix a slow-release fertilizer into the soil at planting time to provide a steady food source.
- Check the soil daily during the heat of summer; begonias like to stay moist but never soggy.
Growing Begonias as Perennials in Warm Climates
If you live in USDA zones 9, 10, or 11, you can enjoy begonias as permanent members of your landscape. In these regions, they function as true perennials. However, even in a tropical climate, begonias have specific needs to ensure they return beautifully each year.
The biggest challenge in warm climates is the heat of summer rather than the cold of winter. High temperatures can cause begonias to wilt or go into a semi-dormant state. In these areas, it is vital to provide deep shade during the hottest part of the day and ensure they have consistent moisture. Mulching the soil around the plants helps keep the root zone cool.
In the winter, even if it doesn't freeze, growth may slow down. This is a natural part of the plant's cycle. During this time, you can reduce watering and hold off on fertilizer until you see new growth emerging in the spring.
"In frost-free zones, begonias can become large, established clumps that provide color for years. The key is protecting them from the scorching afternoon sun and ensuring the soil never stays waterlogged, which can lead to root issues."
How to Overwinter Tuberous Begonias
If you have grown tuberous begonias and want to keep them for next year, you don't have to live in a tropical climate. You can "mimic" a perennial cycle by storing the tubers indoors. Tips for Growing Tuberous Begonias can help you get them started the right way.
Step 1: Let the Frost Start the Process
Wait until the first light frost kills back the foliage. This tells the plant to send its remaining energy down into the tuber for storage. Don't worry—the tuber is protected underground and won't be harmed by a light, overnight frost.
Step 2: Dig and Clean
Carefully lift the tubers from the soil using a garden fork or trowel. Be gentle to avoid nicking or bruising the tuber, as wounds can lead to rot. Cut the stems back to about an inch above the tuber and gently shake off the excess soil.
Step 3: Curing
Place the cleaned tubers in a warm, dry, and well-ventilated spot out of direct sunlight. Let them sit for about a week. This "curing" process allows the outer skin to toughen up and the remaining stem piece to dry and fall off naturally.
Step 4: Storage
Pack the dry tubers into a box filled with slightly damp peat moss, perlite, or wood shavings. Store the box in a cool, dark place where temperatures stay between 40°F and 50°F. A basement or a cool closet is usually perfect. Check them once a month; if they look shriveled, a tiny mist of water is all they need.
Moving Toward Spring
- Bring tubers out of storage 8–12 weeks before the last frost.
- Place them on a tray of moist potting soil in a warm, bright room.
- Wait for small pink or green sprouts to appear before planting them into pots.
- Move them outdoors only when the weather is warm and stable.
Turning Begonias into Houseplants
For wax begonias, Rex begonias, or Angel Wing varieties, the best way to treat them as perennials is to move them inside before the first frost. Many gardeners find that their begonias transition beautifully to life on a windowsill.
When bringing plants indoors, it is a good idea to inspect them for any "hitchhikers" like small insects. A quick spray of water can help clean the leaves. Once inside, place your begonias in a spot with bright, indirect light. A north- or east-facing window is often ideal.
Keep in mind that indoor air in the winter is much drier than the outdoor summer air. Begonias love humidity, so placing the pots on a tray filled with pebbles and a little water can help create a moist microclimate. Be careful not to overwater during the winter. Indoor plants grow more slowly and need less frequent watering than they did when they were outside in the sun.
Key Takeaway: Bringing begonias indoors is a simple way to enjoy their beauty year-round. It turns a temporary garden guest into a long-term companion for your home.
Essential Care for Long-Lasting Begonias
Regardless of whether you grow them as annuals or perennials, success with begonias comes down to a few basic rules. We find that focusing on the environment is the best way to ensure your plants thrive.
Light: The Goldilocks Principle
Begonias are often called shade plants, but they actually need a decent amount of light to produce flowers. The goal is "filtered" or "dappled" sunlight. Imagine the light under a tall tree. If they are in too much shade, they will become leggy and stop blooming. If they are in too much direct sun, the leaves will scorch and turn brown at the edges.
Soil and Drainage
If there is one thing begonias dislike, it is "wet feet." This means the soil should never stay saturated. Whether you are planting in the ground or in a container, ensure the soil is loose and airy. For pots, always use a container with drainage holes at the bottom. This allows excess water to escape, preventing the roots or tubers from rotting.
Watering Wisdom
The best way to water begonias is to check the soil with your finger. If the top inch feels dry, it is time to water. Apply water directly to the soil rather than over the leaves. Keeping the foliage dry helps prevent common issues like powdery mildew, which can happen in humid or stagnant air.
Nutrition
Begonias are hungry plants, especially the tuberous varieties that produce those massive blooms. During the growing season, a balanced, water-soluble fertilizer applied every two to four weeks will keep the plant vigorous. If you are growing them as perennials, stop fertilizing in late summer to let the plant prepare for its winter rest.
Common Myths About Begonia Lifespans
There is a lot of conflicting advice online about how long begonias live. Let's clear up a few common misconceptions so you can garden with confidence.
Myth 1: "Annual begonias are different species than perennial begonias." Not necessarily. Most begonias are perennials by nature. The term "annual" is usually a description of how we use them in cold climates, not a biological classification. Almost any begonia can be kept alive for multiple years if you protect it from the cold.
Myth 2: "If a begonia dies back in the winter, it’s gone forever." This is only true if the roots or tubers freeze. Tuberous begonias naturally go dormant. Even in warm climates, the top of the plant might look a bit tired or die back, but as long as the tuber is healthy, it will sprout again when the weather warms up.
Myth 3: "You have to be an expert to overwinter begonias." Not at all! Saving tuberous begonias is one of the easiest "advanced" gardening projects you can try. It’s essentially the same process as storing potatoes or onions. Even if you only succeed with half of your tubers the first time, it is a fun way to learn more about how plants store energy.
Choosing the Best Varieties for Your Garden
At Longfield Gardens, we have seen firsthand how different varieties perform in various settings. Here are some of our favorites and how they fit into your annual or perennial plans.
- Nonstop Tuberous Begonias: These are perfect for those who want massive, double blooms all summer long. Because they grow from tubers, these are the top candidates for overwintering in a cool basement. They come in stunning colors like deep red, bright yellow, and soft pink.
- Double Delight Tuberous Begonias: These varieties are known for their trailing habit and wonderful fragrance. They are stunning as hanging begonias. Like the Nonstop series, these can be stored as tubers.
- Illumination Series: These are specifically bred for a cascading look. They are incredible as annuals in window boxes where they can spill over the sides in a waterfall of color.
- Wax Begonias: Best used as a low-maintenance bedding annual. While you can bring them inside, most gardeners find it easier to simply replant fresh ones each spring.
Troubleshooting: Why Is My Begonia Not Returning?
If you tried to keep your begonias as perennials and they didn't come back, don't be discouraged. Gardening is a constant learning process. Here are the three most likely reasons a begonia might not survive the winter:
- Exposure to Frost: Even a few hours of temperatures below 32°F can be fatal to the stems and leaves. If the soil itself freezes, the roots or tubers will turn to mush.
- Excessive Winter Moisture: This is the most common cause of failure in warm climates or during indoor storage. If the dormant tuber stays in wet soil, it will rot. Always err on the side of "dry" during the winter.
- Lack of Energy Storage: If a plant was stressed all summer—perhaps due to poor soil or lack of fertilizer—it may not have had enough energy to survive dormancy. Healthy summer plants make for successful winter survivors.
Key Takeaway: If a plant doesn't make it, it isn't a failure—it's an invitation to try a different spot or a new variety next year.
Designing with Begonias
Since you now know that begonias can be either a seasonal treat or a long-term investment, you can use them more effectively in your landscape design.
For a traditional "annual" look, use wax begonias to create a colorful border along a walkway. Their uniform height and constant color create a neat, tidy appearance. Because they are often treated as annuals, you can change the color scheme every year to keep your curb appeal fresh.
For a "perennial" feel, use large tuberous begonias in decorative urns or high-quality pots. By keeping them in containers, you make the transition to winter storage much easier. You can simply move the entire pot into a frost-free garage once the foliage dies back, or lift the tubers out for more controlled storage.
Pairing begonias with other shade-loving perennials like hostas or heucheras (coral bells) creates a beautiful contrast. The broad, matte leaves of a hosta provide a perfect backdrop for the shiny leaves and brilliant blossoms of the begonia.
Conclusion
Whether you choose to enjoy begonias as one-season wonders or commit to keeping them as long-term perennials, these plants offer a spectacular reward for very little effort. Their ability to brighten up the shady parts of our lives makes them a must-have for any home gardener. By matching the right variety to your climate and choosing the level of care that fits your schedule, you can ensure a successful and colorful growing season.
At Longfield Gardens, we take pride in providing high-quality tubers and plants that are ready to perform in your garden. We stand behind our quality with a 100% Quality Guarantee because we want your gardening experience to be as rewarding as possible.
- Begonias are perennials by nature but are sensitive to frost.
- Most gardeners in zones 2–8 grow them as annuals or bring them indoors.
- Tuberous begonias are the easiest to save for next year by storing the tubers.
- Successful care involves bright shade, well-draining soil, and consistent moisture.
"The beauty of begonias lies in their versatility. Whether they are a fleeting summer romance in your flower beds or a long-term companion on your windowsill, they never fail to bring a touch of the tropics to your home."
Ready to start your own begonia journey? Explore our selection of premium tuberous begonias and find the perfect colors to transform your shade garden this year.
FAQ
Do I have to dig up my begonias every year?
If you live in a climate that experiences freezing temperatures (Zones 2–8) and you want to keep your begonias for the next year, yes, you will need to either dig up the tubers or bring the pots indoors. If you prefer a low-maintenance approach, you can simply leave them in the ground and treat them as annuals, planting new ones each spring.
Can begonias survive a frost?
No, begonias are very sensitive to cold. A light frost will usually kill the foliage, and a hard freeze will kill the entire plant, including the roots and tubers. If you are planning to save your plants, it is important to bring them inside or dig them up as soon as the nighttime temperatures start to drop toward freezing.
Will begonias come back if I leave them in the ground?
Begonias will only come back in the spring if you live in USDA zones 9 through 11, where the ground does not freeze. In any other region, the winter cold will destroy the plant's structure, and it will not regrow the following year unless it was protected or moved indoors.
How do I know if my begonia is tuberous or fibrous?
You can usually tell by looking at the base of the plant or the flowers. Tuberous begonias usually have very large, showy, rose-like flowers and grow from a brown, potato-like bulb (tuber) just under the soil surface. Fibrous begonias, like wax begonias, have smaller, clustered flowers and a mass of thin, thread-like roots instead of a solid tuber.