Introduction
There is something truly special about a hanging basket that overflows with soft, colorful blossoms. Weeping begonias, also known as pendulous or trailing begonias, are the perfect choice for adding this touch of elegance to your home. Unlike many flowering plants that demand constant, direct sun, these graceful beauties thrive in the shade. They provide a steady stream of flowers from midsummer all the way until the first frost of autumn.
At Longfield Gardens, we enjoy helping gardeners find the best plants to brighten up every corner of their yard. Weeping begonias are particularly rewarding because they are easy to care for and offer high-impact visual appeal. Whether you want to decorate a covered porch or add life to a shaded balcony, these plants are up to the task. They are sturdy, reliable, and come in a variety of soft, romantic colors.
This guide is designed to help you succeed with weeping begonias, from selecting the right tubers to storing them for next year. We will cover the best planting practices, light requirements, and simple care tips to keep your baskets looking full and vibrant. Growing these cascading flowers is an achievable goal for any gardener, regardless of experience level.
With a little bit of planning and the right care, you can transform your shaded spaces into a floral retreat.
Why Grow Weeping Begonias?
Weeping begonias are a specific type of tuberous begonia bred for their trailing habit. While upright begonias stand tall in garden beds, weeping varieties have stems that naturally arch and hang downward. This makes them the "spiller" of choice for many container arrangements. Their flexible stems can grow quite long, creating a curtain of green leaves and bright flowers.
The most popular weeping varieties often feature double blooms. These flowers look like miniature roses or carnations, adding a sophisticated texture to your garden. Many gardeners choose them because they are "self-cleaning." This means the old flowers drop off on their own, so you do not have to spend time pinching off dead blooms to keep the plant looking neat.
These plants are also incredibly versatile. While they are famous for hanging baskets, they also look wonderful in window boxes or tall urns where they can spill over the edges. Because they love the shade, they solve the common problem of what to plant in areas where most flowers refuse to bloom. They are the ideal partner for other shade-loving foliage like ferns or coleus.
Choosing the Right Varieties
When you start your journey with weeping begonias, the quality of the tuber matters most. A larger tuber acts like a bigger battery, storing more energy to produce more stems and flowers. We recommend looking for firm, dense tubers that feel heavy for their size. If a tuber feels light or mushy, it may not have the energy needed to thrive.
Specific varieties like the 'Double Delight' series are excellent choices for home gardeners. We carry varieties such as 'Double Delight Blush Rose', which offers soft pink tones, and 'Double Delight Primrose', which features a lovely buttery yellow. These specific types are prized not just for their color and trailing habit, but also for their light, pleasant fragrance. Many begonias have no scent at all, so these fragrant varieties add an extra layer of enjoyment to your patio.
When choosing colors, think about the level of shade in your spot. In very deep shade, white or pale yellow flowers tend to "glow" and are more visible than dark reds or deep oranges. If your porch gets a little bit of morning sun, brighter colors like coral or rose will look vivid and saturated.
Selecting the Best Containers
Since weeping begonias are meant to trail, the container you choose should allow them plenty of room to hang. A standard 10-inch to 12-inch hanging basket is a classic choice. If you are using a larger container, such as a 24-inch window box, you can plant several tubers together for a fuller look.
Make sure every container has at least one drainage hole. Drainage refers to how fast water leaves the soil. Begonias have fleshy stems and roots that can rot if they sit in water that cannot escape. If you find a beautiful pot that lacks a hole, use it as a decorative outer sleeve for a plain plastic pot that does have drainage.
For the best results, use a high-quality potting mix rather than garden soil. Potting mix is lighter and designed to stay airy even when wet. A mix that contains about 20% compost or a bit of peat moss will help hold the right amount of moisture while allowing the roots to breathe. Avoid using heavy "topsoil" or "garden soil" in pots, as these can pack down too tightly and suffocate the plant.
Key Takeaway: Always use containers with drainage holes and a light potting mix to prevent root rot and ensure your begonias stay healthy.
Light and Location Requirements
Weeping begonias are famous for their love of shade, but they still need some light to produce flowers. The ideal location is a spot with "filtered" or "dappled" sunlight. This is the kind of light you find under a tall tree or on a porch that faces north or east.
A few hours of morning sun is usually beneficial, as the morning light is cool. However, you should protect your begonias from the harsh, direct sun of the afternoon. Intense heat and direct sunlight can scorch the leaves and cause the flowers to wilt. If you notice the edges of the leaves turning brown and crispy, the plant is likely getting too much sun or the air is too dry.
In very hot climates, begonias appreciate a bit of humidity. You can provide this by grouping plants together or placing them near a water feature. If your garden is in a cooler, northern climate, your begonias can handle a bit more light than they would in the South. Regardless of where you live, a spot protected from strong winds is best, as the trailing stems can be somewhat brittle.
How to Start Begonias Indoors
If you live in a region with a short growing season, starting your begonias indoors is a smart move. This gives the plants a head start so they are ready to bloom by early summer. You should start this process about 8 to 12 weeks before the last expected frost in your area.
- Find the Top: Look at your begonia tuber. One side will have a slight depression or "bowl" shape. This is the top where the sprouts will emerge. The rounded side is the bottom where the roots grow.
- Prepare a Tray: Fill a shallow tray or small pots with moist potting mix.
- Place the Tubers: Set the tubers into the soil with the hollow side facing up. Do not bury them deeply yet. Just press them into the soil so the top is level with or slightly above the surface.
- Wait for Sprouts: Place the tray in a warm, bright spot (about 70°F). Do not water them heavily at this stage. Just keep the soil slightly damp. Overwatering a tuber with no leaves is the fastest way to cause rot.
- Watch the Growth: In two to four weeks, you should see small pink or green sprouts appearing in the center of the tuber. Once these sprouts are an inch or two tall, you can move them into their permanent containers.
What to do next:
- Check tubers for the "bowl" shape before planting.
- Place in a warm room away from cold drafts.
- Mist the soil lightly instead of soaking it until you see leaves.
Planting and Spacing Outdoors
Once the weather is consistently warm and the danger of frost has passed, it is time to move your begonias outside. Weeping begonias are tropical in nature and do not like cold soil. A good rule of thumb is to wait until nighttime temperatures stay above 50°F before leaving them outdoors overnight.
When you are ready to plant them in their final pots or in the ground, cover the tuber with about one inch of soil. If you are planting in a garden bed, space the tubers about 6 to 10 inches apart to allow for air circulation. In a 12-inch hanging basket, three tubers will create a very full, lush display.
If you are planting directly into the ground, choose a spot with loose, fertile soil. If your soil is heavy clay, it is better to stick with containers or raised beds. Begonia roots are relatively shallow, so they do not need a deep hole, but they do need the soil to be easy to grow through.
Essential Summer Watering
Watering is the most important part of begonia care. Because begonias have thick, succulent-like stems, they store a bit of water inside themselves. This means they are slightly more tolerant of drying out than thin-leaved plants like fuchsias, but they still prefer consistent moisture.
The best way to water is to check the soil with your finger. If the top inch of soil feels dry, it is time to water. When you water, do so thoroughly until water runs out of the bottom of the pot. This ensures the entire root ball gets a drink. After watering, wait until the soil surface feels dry again before adding more.
Avoid getting too much water directly on the leaves or in the center of the tuber "bowl" if it is still exposed. Water sitting on the foliage can sometimes lead to fungal issues like powdery mildew. Watering in the morning is ideal because it allows any accidental splashes on the leaves to dry up before the sun goes down. If your plants are in a very breezy spot, they may dry out faster and require more frequent checks.
Fertilizing for Constant Blooms
To keep your weeping begonias producing those heavy, double blooms all summer, they need a regular supply of nutrients. Flowering takes a lot of energy, and the nutrients in potting mix are often washed away by frequent watering.
Start fertilizing once the plant has several leaves and is growing actively. A balanced, water-soluble fertilizer works well. You can follow the instructions on the label, usually applying it every two weeks. Alternatively, some gardeners prefer to use a half-strength solution every time they water.
Early in the season, a fertilizer with a bit of nitrogen helps the plant grow more leaves and stems. Once you see flower buds forming, you can switch to a fertilizer higher in phosphorus (the middle number on the fertilizer package) to encourage more blooms. Always apply fertilizer to moist soil; never fertilize a plant that is wilted or bone-dry, as this can stress the roots.
Understanding Flower Types
A fascinating thing about weeping begonias is that they produce two different types of flowers on the same plant. If you look closely at your 'Double Delight' begonias, you will see large, many-petaled blooms and smaller, simpler flowers.
The large, showy, double flowers are the male blooms. These are the ones that provide the "wow" factor in your baskets. The smaller, single flowers with only a few petals are the female blooms. Often, one male flower is flanked by two female flowers on the stem.
Some gardeners choose to pinch off the female flowers to encourage the plant to put all its energy into the larger male blooms. However, this is not strictly necessary. Weeping begonias look beautiful with both types of flowers, and the mix adds a natural, balanced look to the cascading stems. Whether you leave them or pinch them, the plant will continue to bloom until the end of the season.
Managing Pests and Growth
Weeping begonias are generally healthy plants, but they can occasionally face challenges. The most common issue is leggy growth. This happens when the plant is reaching for more light. If your begonia looks thin and the space between the leaves is very long, try moving it to a slightly brighter spot.
You can also "pinch" your begonias to make them bushier. When a stem is young, simply snip off the very tip. This encourages the plant to grow two new stems from that point, leading to a fuller, more rounded plant. This is best done early in the summer so the plant has plenty of time to grow out.
As for pests, keep an eye out for snails or slugs if your pots are on the ground. These visitors love the tender leaves of begonias. For hanging baskets, pests are rarely an issue. If you notice a white, dusty film on the leaves, it may be powdery mildew. This usually happens when the air is still and humid. Improving air circulation around the plants is the best way to prevent this.
Simple Success Tips:
- Check soil moisture daily during heatwaves.
- Rotate hanging baskets occasionally so all sides get equal light.
- Use a balanced liquid fertilizer every two weeks.
- Remove any yellowing leaves to keep the plant healthy.
Transitioning to Autumn
As the days get shorter and the air turns crisp, your weeping begonias will naturally start to slow down. They are very sensitive to frost, so you should keep an eye on the weather forecast. One single night of freezing temperatures can turn the lush foliage to mush.
When the leaves start to turn yellow and the plant stops producing new buds, it is preparing for dormancy. Dormancy is a resting phase where the plant stores energy in the tuber for the following year. At this point, you should stop fertilizing and reduce your watering.
If you live in a warm climate (USDA zones 8-11), your begonias may survive the winter outdoors if the soil stays relatively dry. However, in most of the United States, the tubers must be brought inside for the winter. This is a simple process that allows you to enjoy the same plants year after year, making them a wonderful investment for your garden.
Overwintering Your Begonia Tubers
Saving your begonia tubers is a great way to save money and grow even larger plants next year. The process is easy and does not require a greenhouse or special equipment.
- Dig them up: After the first light frost kills the top of the foliage, carefully lift the tubers out of the soil. You can also do this before the frost if you notice the plant is already yellowing.
- Clean and Dry: Gently shake off the excess soil. Leave the stems attached for now. Place the tubers in a dry, cool area (away from direct sun) for about two weeks. This allows the tuber to "cure" and the stems to dry up.
- Trim: Once the stems are dry, they should easily pull away or snap off from the tuber. If they don't come off easily, let them dry a bit longer.
- Store: Place each tuber in a small paper bag or wrap them in newspaper. Store them in a cardboard box filled with peat moss, sawdust, or shredded paper.
- Location: Keep the box in a cool, dark, and dry place where the temperature stays around 50°F. A basement or a cool closet is usually perfect. Do not let them freeze.
Check on your tubers once or twice during the winter. If any look shriveled, you can give them a very light mist of water. If any look mushy or show signs of rot, remove them so they do not affect the others. In the spring, you can start the whole process over again.
Conclusion
Growing weeping begonias is a delightful way to bring color and life to the shaded parts of your landscape. With their romantic, cascading stems and lush, rose-like flowers, they offer a level of beauty that few other shade plants can match. By choosing high-quality tubers and providing the right balance of filtered light and consistent moisture, you can enjoy a professional-looking floral display all summer long.
We at Longfield Gardens believe that gardening should be a rewarding and enjoyable experience. Weeping begonias fit this philosophy perfectly because they are low-maintenance yet high-reward. From the excitement of seeing the first sprouts in spring to the satisfaction of a hanging basket in full bloom, these plants are a joy at every stage.
- Start tubers indoors 8-12 weeks before the last frost.
- Use a light, well-draining potting mix.
- Provide filtered light and protection from afternoon sun.
- Store tubers in a cool, dry place over the winter to use again.
Growing weeping begonias is a simple way to add professional-looking beauty to your shaded porches and patios with minimal effort.
If you are ready to start your own display, we invite you to browse our selection of premium begonia tubers and find the perfect colors for your home.
FAQ
Can weeping begonias grow in full sun?
Most weeping begonias prefer partial to full shade and can struggle in the intense heat of full sun. While they may tolerate some morning sun in cooler northern climates, the hot afternoon sun can scorch their delicate leaves and flowers. For the best results, place them in a spot with filtered light or dappled shade.
How often should I water my hanging begonia baskets?
The frequency of watering depends on the temperature and wind, but you should generally check the soil every day. Water the plant whenever the top inch of soil feels dry to the touch. Hanging baskets dry out faster than garden beds, so they may need more frequent attention during the hottest part of the summer.
Why are my begonia flowers falling off?
It is natural for weeping begonias to drop their old flowers as they fade, which is a helpful "self-cleaning" feature. However, if healthy green buds or fresh flowers are falling off, it could be a sign of stress. This is often caused by extreme temperature changes, overwatering, or allowing the soil to get too dry. For additional guidance, see this begonia care guide.
Do I need to fertilize my weeping begonias?
Yes, begonias are heavy feeders because they produce so many flowers throughout the season. Applying a balanced, water-soluble fertilizer every two weeks will help the plant maintain its energy and keep blooming. Be sure to apply the fertilizer to moist soil to avoid burning the roots.
