Table of Contents
- Introduction
- Understanding the Begonia Life Cycle
- Tuberous Begonias vs. Fibrous Begonias
- How to Make Begonias Grow Every Year
- Starting Your Begonias in the Spring
- Best Varieties for Multi-Year Success
- Essential Care Tips for Longevity
- Realistic Expectations for Begonias
- Troubleshooting Common Growth Issues
- Conclusion
- FAQ
Introduction
There is a special kind of excitement that comes with seeing the first sprout of a begonia emerge from the soil. These plants are beloved for their lush, rose-like flowers and their ability to bring vibrant color to the shadiest corners of the yard. Whether you are planting them in hanging baskets or elegant garden borders, hanging begonias offer a reliable splash of beauty that lasts from midsummer right up until the first frost. At Longfield Gardens, we enjoy helping gardeners discover how these tropical treasures can become a staple in their landscape year after year.
This guide is designed for home gardeners who want to understand the life cycle of their begonias and maximize their investment. We will explore whether begonias are annuals or perennials, how to care for them through the seasons, and the simple steps you can take to ensure they return even stronger next summer. For a broader overview of types and care, see our All About Begonias guide. By understanding a few basic principles of plant care, you can enjoy these stunning blooms for many seasons to come. Begonias are technically tender perennials that can grow every year if they are protected from freezing temperatures and given a short period of winter rest.
Understanding the Begonia Life Cycle
To answer the question of whether begonias grow every year, we first need to look at what kind of plant they are. In the gardening world, we often categorize plants as either annuals or perennials. An annual completes its entire life cycle in one year, while a perennial lives for three or more years. Begonias fall into a unique category known as "tender perennials."
In their native tropical habitats, begonias grow year-round without ever stopping. However, in most parts of the United States, our winters are far too cold for these heat-loving plants. If left in the ground during a freeze, the plant will perish. This is why many gardeners treat them as annuals, tossing them out at the end of the season. But because they are perennials at heart, you don't actually have to buy new ones every spring.
The secret lies in the tuber. What many people call "begonia bulbs" are actually thickened underground stems called tubers. These tubers act like a storage tank, holding onto energy and nutrients while the plant is resting. As long as the tuber remains healthy and frost-free, it has the potential to sprout and bloom again the following year.
Key Takeaway: Begonias are perennials that are sensitive to cold. While they will die if exposed to frost, their tubers can be saved and replanted every year.
Tuberous Begonias vs. Fibrous Begonias
When asking if begonias grow every year, it is important to identify which type you have in your garden. Not all begonias are equally easy to keep from one year to the next.
Tuberous Begonias
These are the varieties most famous for their large, dramatic flowers. They grow from a distinct, potato-like tuber. Tuberous begonias, such as the ruffled Double Begonias or the cascading Pendula types, are the best candidates for year-over-year growth. These plants have a built-in "off switch" called dormancy. When the days get shorter and the air turns crisp in the fall, the plant naturally prepares to rest. This makes them very easy to store through the winter.
Fibrous-Rooted Begonias
Commonly known as "wax begonias," these plants have thin, thread-like roots rather than a solid tuber. While they are also technically perennials, they do not go dormant in the same way tuberous begonias do. To keep wax begonias growing every year, you usually have to bring the entire living plant indoors and keep it as a houseplant near a sunny window. Because they don't have a storage tuber to rely on, they are much harder to "save" for the next year than their tuberous cousins.
Hardy Begonias
There is one specific variety, Begonia grandis, known as the hardy begonia. Unlike the tropical versions, this plant can survive outdoors in USDA zones 6 through 9. For help matching plants to your climate, see our Hardiness Zone Map. It dies back to the ground in winter and grows again every year in the spring without any extra help from you. If you live in a colder climate and want a begonia that stays in the ground, this is the one to choose.
How to Make Begonias Grow Every Year
If you want your tuberous begonias to return, you need to guide them through a process called overwintering. This sounds more technical than it actually is. Think of it as putting your plants to bed for a long winter nap. If you want a fuller walkthrough, see our How to Overwinter Begonia Plants guide.
Step 1: Watch the Weather
In the late summer or early fall, you will notice your begonias may start to look a little tired. The leaves might turn slightly yellow, and flower production will slow down. This is a natural part of their cycle. To ensure the tuber is strong for next year, stop fertilizing in late August. This tells the plant to stop making new leaves and start storing energy in the tuber.
Step 2: The First Frost
Wait for the first light frost to touch the foliage. A light frost will turn the leaves black or mushy, but it won't hurt the tuber hidden safely underground. Once the top growth has wilted, it is time to act. If you live in a region that doesn't get frost, you can simply wait until the plant begins to yellow naturally in late autumn.
Step 3: Lifting the Tubers
Carefully dig up the tubers using a garden trowel or fork. Be gentle, as you don't want to nick or bruise the tuber, which could lead to rot. If your begonias are in containers, you can simply pull the entire root ball out of the pot. Shake off the excess soil, but don't worry about getting them perfectly clean just yet.
Step 4: The Curing Process
Before you pack them away, the tubers need to "cure" or dry out. Place them in a cool, dry, and shaded spot—like a garage or a porch—for about one to two weeks. During this time, the remaining stems will dry up and eventually fall off easily. If the stems don't fall off on their own, you can trim them back to about an inch above the tuber.
Step 5: Winter Storage
Once the tubers are dry to the touch, place them in a box filled with a dry material that allows for some air circulation. Peat moss, sawdust, or even shredded newspaper works well. You want to keep the tubers from touching each other. For related planting and storage timing, the Shipping Information page explains how Longfield times orders by zone. Store the box in a cool, dark, and dry place where temperatures stay around 40°F to 50°F. A basement or an unheated (but frost-free) closet is usually perfect.
What to do next:
- Check your stored tubers once a month during the winter.
- If you see any soft or mushy spots, remove those tubers immediately to prevent rot from spreading.
- If the tubers look very shriveled, you can lightly mist the packing material with a tiny bit of water.
Starting Your Begonias in the Spring
The most rewarding part of growing begonias every year is "waking them up" in the spring. Because the tubers grow larger each year, your plants will often produce even more flowers than they did the previous season.
Timing the Start
About 6 to 8 weeks before the last expected frost in your area, bring your tubers out of storage. This head start indoors ensures you get blooms much earlier in the summer. If you wait to plant them directly outside, they may not start flowering until very late in the season.
Sprouting the Tubers
Look at your tuber and find the side that is slightly hollow or indented—this is the top. The rounded side is the bottom where the roots will grow. Place the tubers in a shallow tray filled with moist potting soil. Do not bury them deep; just press them into the soil so the tops are level with the surface. For a deeper planting walkthrough, see our How Deep Should I Plant Begonias? guide.
Keep the tray in a warm spot (around 70°F) with bright, indirect light. Within a few weeks, you will see small pink or green nubs starting to grow from the hollow center. This is a sign that your begonia is ready for another year of growth.
Moving Outdoors
Wait until all danger of frost has passed and the nighttime temperatures are consistently above 50°F before moving your begonias outside. Begonias are very sensitive to cold soil. If they are moved out too early, the shock can stunt their growth for the rest of the summer. We ship our orders from our facility in Lakewood, New Jersey, according to your local planting zone to help ensure your plants arrive at the ideal time for your climate.
Best Varieties for Multi-Year Success
If you are looking to start a collection that you can grow every year, focus on varieties known for their vigorous tubers. At our trial gardens, we evaluate plants to ensure they perform consistently for home gardeners. Here are some excellent choices:
- Double Begonias: These produce massive, rose-like blooms in shades of red, pink, yellow, and white. Their tubers tend to grow quite large over time, leading to spectacular displays.
- Pendula (Hanging) Begonias: Perfect for baskets, these varieties have a graceful, weeping habit. They are easy to lift and store right in their baskets if you allow the soil to dry out completely. For two popular options, see Begonia Hanging Golden Balcony and Begonia Hanging Pink Balcony.
- Fimbriata Begonias: Known for their unique, fringed petals that look like carnations, these are sturdy growers that respond very well to the overwintering process.
- Non-Stop Series: While often sold as annuals, these are tuberous begonias that will reliably return if you follow the storage steps. They are prized for blooming continuously all summer long. See our Non-Stop Begonias collection for more options.
Essential Care Tips for Longevity
To ensure your begonia bulbs grow every year, you need to keep the tuber healthy during the growing season. A stressed plant produces a small, weak tuber that might not survive the winter.
Light Requirements
Begonias are famous for loving shade, but "shade" can mean different things. Most begonias thrive in dappled sunlight or bright, indirect light. If they are in total darkness, they will become leggy and won't store enough energy. On the other hand, harsh afternoon sun can scorch their leaves. A spot that gets morning sun and afternoon shade is usually the "sweet spot" for begonia success.
Watering Correcty
Drainage is the most important factor in begonia health. "Drainage" simply means how fast water leaves the soil. Begonias like to stay moist, but they hate sitting in soggy soil. If the soil stays too wet, the tuber can rot, and your plant won't return next year. Always use a pot with a drainage hole and a high-quality, lightweight potting mix. For container-planting details, see our How Deep Do You Plant Begonias in Pots? guide. A good rule of thumb is to water when the top inch of soil feels dry to the touch.
Feeding for the Future
Because begonias bloom so much, they need plenty of "fuel." Use a balanced, water-soluble fertilizer every two weeks during the peak of summer. This keeps the foliage healthy, which in turn allows the plant to photosynthesize and build up the tuber's energy reserves. Remember to stop feeding in late August so the plant can naturally begin its transition into dormancy.
Realistic Expectations for Begonias
While it is entirely possible to grow begonias every year, gardening always involves a few variables. It is helpful to keep a few things in mind to ensure you aren't disappointed.
- Tuber Lifespan: A begonia tuber can live for many years, sometimes a decade or more. However, as they get very old and large (some can grow to the size of a dinner plate!), they may occasionally become hollow or less productive. If a very old tuber stops blooming well, it might be time to start fresh with a new one.
- Weather Impact: Some years are harder on begonias than others. An exceptionally wet, cool summer can increase the risk of fungal issues or tuber rot. If your plants look a bit lackluster one year, don't give up—often a better weather year will see them bounce back beautifully.
- Pet Safety: It is important to note that begonias can be toxic if ingested by pets. If you have curious cats or dogs, it is best to keep your begonias in hanging baskets or on high plant stands where they are out of reach.
Troubleshooting Common Growth Issues
If your begonias aren't performing as well as you hoped, or if you are worried they won't make it to next year, check these common factors first.
Leggy Stems
If your begonia is growing very tall with lots of space between the leaves, it is likely looking for more light. Move it to a brighter location. You can also "pinch back" the stems early in the season to encourage a bushier, more compact shape. A bushier plant has more leaves to feed the tuber for next year.
Few Flowers
If you have plenty of green leaves but no blooms, you might be using a fertilizer with too much nitrogen. Nitrogen encourages leaf growth but can sometimes suppress flowers. Switch to a fertilizer with a higher middle number (phosphorus) to encourage more buds. Also, ensure the plant isn't in a spot that is too dark.
Mildew on Leaves
In humid summer weather, begonias can sometimes get a white, powdery dusting on their leaves called powdery mildew. This is usually caused by poor air circulation or getting the leaves wet when watering. To prevent this, always water at the base of the plant rather than over the top, and give your plants a little space so air can move around them.
Key Takeaway: Success with begonias isn't about complicated tricks. It's about matching the plant to the right light and ensuring the soil drains well.
Conclusion
Growing begonias is a rewarding experience that adds a touch of elegance to any garden. By recognizing that these plants are more than just one-season wonders, you can enjoy the satisfaction of watching your favorite varieties grow larger and more beautiful every year. Whether you are overwintering a cherished Double Begonia or starting a new collection of cascading Pendula types, the effort of saving the tubers is a small price to pay for the months of color they provide.
At Longfield Gardens, we stand behind the quality of our tubers with a 100% quality guarantee. We want your gardening journey to be as enjoyable as possible, and we are here to support you with quality plants that are true to variety. You can read more about our promise on the About Us page. With just a little bit of care during the winter months, your begonias will be ready to brighten your garden again as soon as the warm spring air returns.
Growing your own begonias year after year is one of the easiest ways to build a spectacular shade garden. It turns a simple gardening task into a rewarding multi-year tradition that brings beauty to your home season after season.
For your next steps, consider marking your calendar for late August to begin the transition to dormancy. When you're ready to add new colors to your collection, we ship to the 48 contiguous United States, timing our deliveries so your plants arrive just when your local soil is ready for them. For broader planting timing by zone, you can also check the Hardiness Zone Map.
FAQ
Can I leave my begonia bulbs in the ground over winter?
You can only leave begonia bulbs in the ground if you live in a frost-free climate (USDA zones 9-11) or if you are growing a specific hardy variety like Begonia grandis. For most gardeners in the U.S., the freezing winter temperatures will destroy the tubers if they aren't dug up and stored indoors in a cool, dry place.
How many years will a begonia tuber last?
With proper care and overwintering, a begonia tuber can live and bloom for many years, often five to ten years or even longer. As the tuber grows larger each season, the plant generally becomes more vigorous and produces more flowers, though very old tubers may eventually need to be replaced if they lose their vigor.
Do I need to water my begonia tubers while they are in storage?
Generally, begonia tubers should be kept dry during their winter dormancy. However, you should check them once a month; if they appear extremely shriveled or bone-dry, you can very lightly mist the packing material (like peat moss or sawdust) with water. The goal is to keep them from drying out completely without making them wet enough to rot.
Why didn't my saved begonia tubers grow this year?
The most common reasons saved tubers fail to grow are rot during storage (due to too much moisture), freezing temperatures in the storage area, or the tubers being planted upside down in the spring. Always ensure the hollow side of the tuber faces up when planting, and keep them in a frost-free, dry environment during the winter months.