Introduction
There is nothing quite like the sight of a garden bed or porch container overflowing with the vibrant, textured leaves and cheerful blooms of begonias. Whether you are looking to brighten a dark, shady corner or add a splash of constant color to your front walkway, these versatile plants are a favorite for a reason. At Longfield Gardens, we see every year how begonias transform outdoor spaces into lush, tropical retreats with very little effort. If you want to browse the full assortment, the Begonia Flower Bulbs for Sale collection is a great starting point.
Many people first encounter begonias as houseplants, which often leads to the question: is begonia an outdoor plant? The answer is a resounding yes. While they are tropical in origin, they have become a staple of the American summer garden. This guide is for any home gardener who wants to understand how to transition these beauties to the outdoors and keep them thriving all season long. For a broader primer, see All About Begonias.
We will cover the different types of begonias you can grow outside, where to place them for the best results, and how to care for them so they bloom until the first frost. By matching the right variety to your specific garden conditions, you can enjoy a high-impact display that looks professional but feels simple to maintain. Begonias are truly one of the most flexible and rewarding choices for any outdoor landscape.
Understanding Begonias in the Outdoor Garden
Begonias are a massive family of plants with thousands of species, but most of the ones we grow in our yards fall into a few specific categories. To get the best results, it helps to understand that while they love the outdoors, they are "tender perennials." In most parts of the United States, this means we treat them as annuals that grow during the warm months and then either retire for the winter or come back indoors when the weather turns cold.
The primary reason begonias are such successful outdoor plants is their adaptability. In their native environments across South and Central America, Africa, and Asia, they often grow on the forest floor. This makes them naturally suited for the shady spots in your yard where other flowers might struggle. However, modern breeding has given us varieties that can also handle more sunshine, making them a "go-to" plant for almost any exposure.
When you plant begonias outside, you are bringing a touch of the tropics to your doorstep. They provide a lushness that is hard to replicate with other bedding plants. Because they are generally resistant to many common garden pests and diseases, they offer a reliable way to ensure your garden looks great from late spring all the way through the autumn months.
Choosing the Right Begonia for Your Space
Success with begonias starts with picking the right type for your specific spot. Not all begonias are the same, and matching their "personality" to your garden's light and soil will make your job much easier.
Wax Begonias (Fibrous-Rooted)
These are the classic "bedding" begonias you often see in public parks and lining garden paths. They are small, usually topping out around 6 to 12 inches, and form neat, rounded mounds. Wax begonias are known for their waxy, succulent-like leaves which can be bright green or a deep, bronzy red. They are incredibly tough and are the best choice if you have a spot that gets a fair amount of sun.
Tuberous Begonias
If you want big, show-stopping flowers that look like roses or camellias, Upright Double Begonias are the answer. These grow from a potato-like tuber and produce large, heavy blooms in shades of white, yellow, orange, pink, and red. They are particularly popular for hanging baskets and window boxes because many varieties have a lovely cascading habit. These prefer cooler, shadier spots and need a bit of protection from the wind.
Cane-Like and Angel Wing Begonias
Named for their tall, bamboo-like stems and leaves shaped like wings, these begonias add wonderful height and structure to the garden. They often feature interesting patterns or silver spots on their foliage. While they are frequently grown as houseplants, they love being outdoors in large containers during the summer. For more details, see the Angel Wing Begonia care guide.
Rex Begonias
Rex begonias are the artists of the family. They are grown primarily for their spectacular leaves, which can feature swirls of silver, purple, burgundy, and emerald green. While they do bloom, the flowers are usually secondary to the foliage. These are perfect for adding color to deep shade areas where flowers are hard to come by. They stay relatively low to the ground and look best in pots where you can appreciate the intricate leaf patterns up close.
Hardy Begonias (Begonia grandis)
This is the rare exception to the "tropical" rule. The hardy begonia is a true perennial in USDA zones 6 through 9. It looks very similar to its tropical cousins with heart-shaped leaves and dainty pink flowers, but it can survive the winter in the ground. If you are unsure about your climate, check the Hardiness Zone Map. It is an excellent choice for a woodland garden where it can naturalize and come back year after year.
Key Takeaway: Match your begonia to your light levels. Wax begonias with bronze leaves handle the most sun, while Tuberous and Rex varieties prefer the shade.
Where to Plant: Sun vs. Shade
One of the most common myths is that all begonias must live in deep shade. While it is true that almost all begonias appreciate some relief from the hot afternoon sun, their needs vary. For a more detailed guide, see Where to Plant Begonias for the Best Blooms.
In northern climates, begonias can generally handle more direct sunlight than they can in the South. If you live in a region where the summer sun is particularly intense, focus on providing morning light and afternoon shade. This "peek-a-boo" sun allows the plants to photosynthesize and produce flowers without the leaves getting scorched.
A good rule of thumb is to look at the leaves. Begonias with darker, bronze-colored foliage have more natural protection against the sun and can often handle a full-day exposure if they are kept well-watered. Varieties with bright green or variegated leaves usually prefer filtered light or open shade. If you see the edges of the leaves turning brown and crispy, it is often a sign the plant is getting too much direct light.
Airflow is also a key factor when choosing a spot. Begonias have fleshy stems that hold a lot of water, which makes them susceptible to mildew if the air is too stagnant. Plant them where there is a gentle breeze, or give them enough space so they aren't crowded against a wall or other dense plants. This simple step keeps the foliage dry and healthy.
When to Move Begonias Outdoors
Timing is everything when it comes to tropical plants. Because begonias are so sensitive to the cold, rushing them outside too early can stall their growth or even damage the plant.
The golden rule is to wait until the danger of frost has completely passed. In most areas, this means waiting until nighttime temperatures stay consistently above 50°F. If the soil is still cold and damp, the roots may struggle to get established. We always suggest being patient; a begonia planted in late May in warm soil will often outgrow one planted in early May that had to endure a cold snap.
If you have been growing your begonias indoors as houseplants or started your tubers early in pots, How to Start Tuberous Begonias Indoors can help you get them ready before planting time. This means placing them in a sheltered, shady spot outdoors for a few hours a day and gradually increasing their exposure to the wind and light over the course of a week. This transition period helps the plant toughen up its leaf cuticles so it doesn't experience "transplant shock."
- Check your local frost dates before planning your garden.
- Monitor nighttime lows for a full week of 50°F+ weather.
- Start with a few hours of outdoor time in the shade.
- Bring them inside if a surprise cold night is forecasted.
Planting Basics: Soil, Depth, and Spacing
Getting your begonias off to a good start involves focusing on the basics of soil and spacing. They aren't overly demanding, but they do have a few preferences that make a big difference in how they perform.
Soil and Drainage
"Drainage" is a word you will hear often in gardening, and it simply refers to how fast water leaves the soil. Begonias have very fine, delicate roots that can rot if they sit in "wet feet" (saturated soil) for too long. Whether you are planting in the ground or a container, use a light, airy soil mix. If your garden soil is heavy clay, consider adding some compost or planting in raised beds to improve the drainage.
Planting Depth
For wax begonias and other fibrous types, plant them at the same depth they were in their nursery pot. For tuberous begonias, the depth is even more critical. If you are planting the tubers directly, they should be covered by only about an inch of soil. For more detail, read Tips for Growing Tuberous Begonias. If they are already growing in a pot, keep the base of the stems level with the surrounding soil. Planting them too deep can lead to stem rot, while planting too shallow can cause the plant to dry out too quickly.
Spacing for Success
It is tempting to pack plants close together for an instant full look, but begonias need room to breathe. If you want exact spacing guidance, see How Far Apart Do You Plant Begonias?.
- Wax Begonias: Space these 6 to 8 inches apart. They will eventually grow together to form a solid carpet of color.
- Tuberous Begonias: Space these 10 to 12 inches apart to allow for their larger leaves and flower clusters.
- Cane and Rex Begonias: These are often best as individual specimens in pots, but if planting in a group, give them at least 12 to 15 inches of space.
Key Takeaway: Good drainage and proper spacing prevent the most common begonia problems. Ensure your soil is fluffy and your plants have room for airflow.
Watering Your Outdoor Begonias
Watering is the area where most gardeners either succeed or struggle with begonias. Because these plants have thick, succulent-like stems, they actually store quite a bit of moisture. This means they are more drought-tolerant than people think, but they are also very sensitive to overwatering.
The best approach is to check the soil with your finger. If the top inch or two feels dry, it is time to water. If it still feels damp, wait another day. When you do water, try to apply it directly to the base of the plant. Getting the leaves wet, especially in the evening, can encourage powdery mildew or other fungal issues. Morning watering is ideal because it gives any moisture that does hit the leaves plenty of time to evaporate in the sun.
For begonias in containers or hanging baskets, you will need to check them more frequently. Pots dry out much faster than the ground, especially during the peak of summer. However, the same rule applies: never let them sit in a tray of standing water. If your pot doesn't have a drainage hole, it is nearly impossible to keep a begonia healthy outdoors.
Feeding for Continuous Blooms
To keep the flowers coming all summer long, begonias appreciate a bit of extra nutrition. If you want a full, long-blooming look, the Non-Stop Begonias collection is a great place to start. They are relatively "heavy feeders," meaning they use up the nutrients in the soil quite quickly as they produce those lush leaves and bright blooms.
At the time of planting, we recommend mixing a slow-release fertilizer into the soil. This provides a steady, low-level "snack" for the plants over several months. Once the plants are established and growing vigorously, you can supplement this with a liquid fertilizer about once a month. Look for a "balanced" fertilizer (where the three numbers on the bag are roughly equal) or one formulated for flowering plants.
Be careful not to over-fertilize, especially with high-nitrogen formulas. Too much nitrogen will give you giant, beautiful leaves but very few flowers. If your plant looks incredibly healthy but isn't blooming, try skipping the fertilizer for a few weeks to let the plant balance itself out.
Maintenance and "Deadheading"
One of the best things about begonias is that they are "self-cleaning." In the gardening world, "deadheading" means removing old, faded flowers to encourage the plant to make new ones. While many annuals like geraniums or petunias require constant deadheading to stay pretty, begonias usually drop their old flowers on their own.
You may still want to do a bit of "tidying up" now and then. If a tuberous begonia bloom gets particularly heavy and snaps, or if the leaves of a wax begonia get a bit "leggy" (long and thin with few leaves), don't be afraid to pinch them back. Pinching the tips of the stems encourages the plant to branch out, resulting in a fuller, bushier appearance.
If you are growing begonias in a very visible spot like a front porch, you might find that the fallen flowers create a bit of a mess on the ground or the patio. A quick sweep or a light spray with a hose is usually all it takes to keep the area looking sharp.
Using Begonias in Containers and Baskets
Begonias are perhaps the most versatile plants for outdoor containers. Their ability to thrive in varying light and their beautiful form make them a must-have for porch and patio gardening. If you are especially drawn to baskets and tall planters, the Hanging Begonias collection is a great place to start.
The "Thriller, Filler, Spiller" Method
You can create a professional-looking container by using different types of begonias together:
- Thriller: Use a tall Angel Wing or Cane begonia in the center to provide height and drama.
- Filler: Surround the center plant with Rex begonias or mounding Wax begonias to add bulk and interesting leaf textures.
- Spiller: Use trailing Tuberous begonias or "Dragon Wing" varieties to cascade over the edges of the pot.
Hanging Baskets
Tuberous begonias are the stars of the hanging basket world. Because the flowers often face downward, they are perfectly viewed from below. For a ready-made option, try Begonia Hanging Golden Balcony. When planting a basket, make sure it is high enough that you aren't walking into it, but low enough that you can easily check the soil moisture. Since baskets are exposed to the wind on all sides, they may need water every single day during a heatwave.
Window Boxes
For window boxes that get partial shade, begonias provide a constant stream of color that lasts much longer than many spring-blooming bulbs. Begonia Upright Double Superba White is a great choice because it stays relatively compact and won't grow so high that it blocks your view out the window.
Key Takeaway: Begonias are the perfect container plant. Use their different growth habits—tall, mounding, and trailing—to create a layered, lush look.
Protecting Begonias from Pests and Wildlife
While begonias are generally avoided by many pests, they aren't completely "bulletproof." In the outdoor garden, you might occasionally run into a few visitors.
Insects
The most common insect issues are aphids or mealybugs, which are tiny insects that suck the sap from the stems. You can usually manage these by simply spraying the plants with a sharp stream of water from the hose or using a gentle insecticidal soap. Slug and snails also enjoy the fleshy leaves of begonias, especially in damp, shady areas. If you see jagged holes in the leaves, a bit of organic slug bait or keeping the area free of debris can help.
Wildlife
Deer and rabbits generally find other plants more delicious than begonias, but if they are hungry enough, they may take a nibble. If you have a significant deer population, planting your begonias in pots on a raised porch or using a natural repellent spray can provide an extra layer of protection. Interestingly, many gardeners find that begonias are much less bothered by chipmunks and squirrels than plants like tulips or lilies.
Overwintering: Bringing the Outdoors In
As the summer winds down and the first hints of autumn arrive, you have a choice to make. You can treat your begonias as annuals and let them go with the first frost, or you can bring them inside to enjoy for another season.
Bringing Potted Plants Inside
If you have begonias in containers, bring them indoors before the nighttime temperatures drop below 50°F. If you want a broader overview, read Are Begonias Indoor or Outdoor Plants?. The transition from the humid outdoors to a dry, heated house can be stressful, so place them in a bright spot (but away from direct heater vents) and reduce your watering. They may drop a few leaves as they adjust, but they will eventually settle in as lovely houseplants.
Storing Tubers
For tuberous begonias, you don't have to keep the whole plant growing. After the first light frost has blackened the foliage, carefully dig up the tubers. Cut off the stems, gently brush off the soil, and let them dry in a cool, dark place for a few days. Once they are dry, store them in a box of peat moss or sawdust in a cool (about 50°F) basement or garage. Next spring, you can "wake them up" by potting them back up and starting the cycle again.
Taking Cuttings
If you have a favorite outdoor begonia that is too large to bring inside, you can take a "cutting." Simply snip off a healthy stem, remove the lower leaves, and place it in a glass of water or a small pot of moist soil. It will grow new roots, giving you a brand-new, smaller version of the plant to keep on your windowsill until next year.
Summary of Outdoor Begonia Success
Begonias are a wonderful way to bring reliable, high-impact color to your outdoor spaces. By understanding that they are tropical plants that value warmth, good drainage, and a break from the harshest sun, you can ensure they thrive in your garden. Whether you choose the tough-as-nails Wax begonia for a sunny border or the elegant Tuberous begonia for a shaded porch, these plants offer a rewarding experience for gardeners of all levels.
At Longfield Gardens, we believe that gardening should be a source of joy, not stress. Begonias fit this philosophy perfectly because they do so much of the work for you—blooming continuously and resisting many of the problems that plague other garden flowers. For details on quality and support, see Our Guarantee.
"The secret to a beautiful begonia display is simply matching the variety to the light. Once you find that 'sweet spot' of morning sun and well-drained soil, these plants will reward you with color that lasts until the very end of the season."
If you are ready to add these versatile beauties to your yard, start by looking at the different forms available and picking a few that fit your style. With a little water and some regular feeding, your outdoor begonias will likely become the highlights of your summer garden.
FAQ
Do begonias need sun or shade when grown outdoors?
It depends on the variety. Most begonias prefer partial shade or filtered light, especially in the afternoon. However, wax begonias with bronze-colored leaves can handle full sun in many climates, while Rex and Tuberous varieties need protection from the midday heat to prevent their leaves from burning.
Can begonias stay outside during the winter?
In most parts of the U.S. (USDA zones 8 and colder), tropical begonias cannot survive the winter outside. You should bring them indoors or store their tubers before the first frost. The only exception is the "Hardy Begonia" (Begonia grandis), which is perennial in zones 6 through 9.
How often should I water begonias in my garden?
Begonias like to be kept moist but not soggy. A good rule of thumb is to water when the top inch of soil feels dry to the touch. This usually means watering every 2 to 4 days, though containers and hanging baskets may need more frequent attention during hot, dry spells.
Are begonias toxic to pets?
Yes, begonias contain calcium oxalate crystals, which can be toxic to cats and dogs if ingested. The most toxic part of the plant is usually the underground tubers or roots. It is always a good idea to keep these plants out of reach of pets who like to chew on greenery.
