Can a Begonia Be Planted Outside? Your Easy Summer Guide

Introduction
Understanding the Different Types of Begonias
The Best Time to Move Begonias Outdoors
Choosing the Right Location
The Importance of Hardening Off
How to Plant Begonias Outside Step-by-Step
Summer Care for Outdoor Begonias
Protecting Your Plants from Pests and Animals
Transitioning Back Indoors for Winter
Realistic Expectations for Outdoor Success
Conclusion
FAQ

Introduction

There is nothing quite like the sight of a begonia in full bloom to brighten up a porch or garden bed. Whether you are looking to fill a hanging basket with trailing blooms or add a splash of color to a woodland border, Hanging Begonias are a fantastic choice for any gardener.

We often get asked if these popular plants can handle the transition from the indoor windowsill to the outdoor garden. At Longfield Gardens, we enjoy helping you find the perfect place for every bulb and plant in your landscape. If you want to shop a wider selection, our Begonia Flower Bulbs for Sale collection is a good place to start.

The answer is a resounding yes; you can absolutely plant begonias outside as long as you wait for the right weather and choose a spot that meets their simple needs. This article covers everything from timing and light requirements to the step-by-step process of moving your plants safely outdoors, and our Shipping Information page can help if you are planning an order.

Understanding the Different Types of Begonias

Before you move your plants into the garden, it is helpful to know which type of begonia you have. While most begonias enjoy similar summer conditions, their growth habits and light preferences can vary slightly. Identifying your plant helps you pick the best spot in your yard, and the Upright Double Begonias collection is a good place to see those fuller, upright forms.

Tuberous Begonias

These are some of the most spectacular varieties, known for their large, rose-like flowers. Tuberous begonias grow from a thick, potato-like structure called a tuber. They come in both upright and trailing varieties, making them excellent for garden beds or hanging baskets. We find that these are a favorite for gardeners who want high-impact color in partially shaded areas.

Wax Begonias

Wax begonias are identifiable by their shiny, succulent-like leaves and compact growth. They are incredibly hardy and are often used as bedding plants to create "carpets" of color. These plants are quite versatile and can often handle more sun than other begonia types, especially if the soil stays moist. For more ideas on shade-friendly summer bulbs, see Summer Bulbs for Shady Gardens.

Rex and Rhizomatous Begonias

These varieties are primarily grown for their stunning foliage rather than their flowers. Their leaves can feature swirls of silver, purple, pink, and deep green. While often kept as houseplants, they can spend a very happy summer outdoors in a sheltered, shady spot. For a deeper look at begonia light needs, see Are Begonias Shade Plants? Light Tips for Best Blooms.

Cane-Like Begonias

Often called "Angel Wing" begonias because of the shape of their leaves, these plants have tall, bamboo-like stems. They can grow quite large and produce beautiful clusters of drooping flowers. They make excellent "thriller" plants for large patio containers.

The Best Time to Move Begonias Outdoors

The most important factor in successfully growing begonias outside is timing. Because begonias are native to tropical and subtropical climates, they are very sensitive to cold temperatures. Even a light frost can cause significant damage to their tender stems and leaves.

The 50-Degree Rule

As a general rule, you should wait to plant begonias outside until nighttime temperatures consistently stay above 50°F. If the ground or the air is still chilly, the plants will likely sit still and wait for more warmth before they start growing. In many parts of the United States, this means waiting until late May or early June, and the Hardiness Zone Map can help you plan.

Watching Your Local Weather

Soil temperature is just as important as air temperature. Begonias thrive when the soil is warm and inviting. If you live in a northern climate, your planting window may be shorter, but the plants will grow rapidly once the summer heat arrives. A quick check of your local 10-day forecast is the best way to ensure no surprise cold snaps are on the way. For earlier blooms, see How to Start Tuberous Begonias Indoors.

Key Takeaway: Patience pays off. Waiting for consistently warm nights ensures your begonias start their outdoor season with plenty of energy and no risk of cold damage.

Choosing the Right Location

Finding the right "home" for your begonias is the next step. Most begonias are famous for loving the shade, but they still need some light to produce those beautiful flowers. For a deeper look at this balance, Tips for Growing Tuberous Begonias is a helpful guide.

Sun vs. Shade

Most varieties prefer "dappled" or "filtered" sunlight. This means a spot under a leafy tree or on a porch that gets bright light but not direct, scorching rays.

Morning Sun: A spot that gets 2 to 4 hours of gentle morning sun followed by afternoon shade is often the "sweet spot" for begonias.
Harsh Afternoon Sun: Avoid placing begonias in spots where the hot afternoon sun hits them directly. This can lead to leaf scorch, where the edges of the leaves turn brown and crispy.
Deep Shade: While begonias can grow in deep shade, they may produce fewer flowers and become a bit "leggy" as they stretch toward the light.

Wind Protection

Begonias have brittle stems that can snap easily in high winds. When choosing a spot, look for a protected area. This might be near a wall, a fence, or nestled among other sturdier plants. If you are planting in hanging baskets, make sure they are securely fastened so they don't swing violently during summer thunderstorms.

Soil and Drainage

"Drainage" simply means how fast water leaves the soil. Begonias love moisture, but they cannot stand having "wet feet." If the soil stays soggy, the roots or tubers may rot.

In the Garden: If your garden soil is heavy clay, consider planting your begonias in raised beds or amending the area with compost to improve drainage.
In Containers: Always use a high-quality potting mix and ensure your pots have plenty of drainage holes at the bottom.

The Importance of Hardening Off

If your begonias have been growing inside a greenhouse or on your windowsill, you cannot move them directly into the garden all at once. The outdoor world is much more intense than the indoor one. There is more wind, stronger light, and wider temperature swings. To keep your plants healthy, you must use a process called "hardening off."

How to Harden Off Begonias

Day One: Take your plants outside to a completely shaded, sheltered spot for just one or two hours, then bring them back inside.
Increase Exposure: Each day, leave them out for an hour or two longer.
Introduce Light: After a few days, begin giving them a small amount of filtered morning light.
Monitor: Check the plants for any signs of stress, such as wilting or drooping.
Overnight Stay: Once the plants have spent several full days outside and the nights are warm, they are ready to stay out for good.

This process usually takes about 7 to 10 days. It may seem like a lot of work, but it prevents "transplant shock" and ensures your plants continue to grow vigorously once they are in the ground.

How to Plant Begonias Outside Step-by-Step

Once your plants are hardened off and the weather is warm, it is time to get them in the ground or their permanent outdoor containers.

For Garden Beds

Prepare the Soil: Loosen the soil to a depth of about 6 inches. This makes it easy for the roots to spread out.
Dig the Hole: Make a hole that is slightly wider than the current root ball of your plant.
Set the Plant: Gently remove the begonia from its nursery pot. Place it in the hole so the top of the root ball is level with the surrounding soil surface. A classic upright option is Begonia Upright Double Roseform Pink.
Fill and Firm: Fill the space around the roots with soil and press down gently with your hands to remove any large air pockets.
Water In: Give the plant a thorough watering right away to help settle the soil.

For Containers and Hanging Baskets

Select the Right Pot: Choose a container that provides enough room for the plant to grow. For a single tuberous begonia, a 10-inch pot is usually a good size. For a trailing option, Begonia Hanging Pink Balcony is a strong choice.
Use Potting Mix: Fill the pot with fresh, well-draining potting soil. Do not use garden soil in pots, as it is too heavy and won't drain well.
Space Correctly: If planting multiple begonias in one large container, space them about 6 to 8 inches apart. A compact upright choice like Begonia Upright Double Picotee White also works well in containers.
Planting Depth: If you are planting bare tubers rather than started plants, tuck them into the soil about 1/2 inch deep with the indented side facing up.

What to do next:

Check the soil moisture daily for the first week.

Add a thin layer of mulch around garden-planted begonias to keep roots cool.

Ensure hanging baskets are at a height where you can easily reach them for watering.

Summer Care for Outdoor Begonias

Once your begonias are established, they are relatively low-maintenance. However, a little regular attention will keep them blooming beautifully until the first frost of autumn.

Watering Correctly

The goal is to keep the soil "evenly moist." This means it should feel like a wrung-out sponge.

The Finger Test: Stick your finger about an inch into the soil. If it feels dry, it is time to water. If it feels wet, wait a day or two.
Where to Water: Try to water at the base of the plant rather than over the leaves. Wet leaves can sometimes lead to mildew or spotting, especially in humid weather.
Container Needs: Plants in pots and hanging baskets dry out much faster than those in the ground. During a hot, dry spell, you may need to water your containers every day. If you want a bright, polished container display, Begonia Upright Double Superba White is a beautiful option.

Feeding Your Plants

Begonias are "heavy feeders," meaning they use a lot of energy to produce those constant blooms. We recommend using a balanced, water-soluble fertilizer every two to three weeks during the growing season. This provides the nutrients they need to stay lush and colorful. For larger plantings, Begonia Non Stop Mix - Bulk Offer is a handy way to get plenty of color at once. Always follow the instructions on the fertilizer label for the best results.

Grooming and Deadheading

One of the best things about many modern begonia varieties is that they are "self-cleaning." This means the old flowers fall off on their own as they fade. However, if you see yellowing leaves or broken stems, it is a good idea to snip them off. This keeps the plant looking tidy and allows it to focus its energy on new growth.

Protecting Your Plants from Pests and Animals

While begonias are generally easy to grow, they can sometimes attract unwanted visitors. Because they have succulent, moisture-rich stems, certain animals find them appealing.

Dealing with Slugs and Snails

In shady, damp areas, slugs and snails can occasionally take a nibble on begonia leaves. You can usually manage this by keeping the area around the plants clear of debris or using organic slug bait if necessary. Watering in the morning rather than the evening also helps, as it allows the soil surface to dry out before the slugs become active at night.

Deterring Deer and Rabbits

If you live in an area with lots of wildlife, you may find that deer or rabbits are curious about your begonias.

Elevate: Planting begonias in tall pots or hanging baskets is often enough to keep them out of reach of rabbits.
Placement: Keeping containers on a porch or closer to the house can often deter deer, who prefer to forage in more open areas.

Transitioning Back Indoors for Winter

As the summer comes to an end, you have a choice to make. Most begonias are treated as annuals, meaning they are enjoyed for one season and then replaced. However, you can save your begonias and bring them back for next year. For broader begonia care and type information, All About Begonias is a helpful reference.

Overwintering Tuberous Begonias

If you have tuberous begonias, they will naturally begin to go dormant as the weather cools in the fall.

Stop Feeding: In late summer, stop fertilizing to encourage the plant to slow down.
Lift the Tubers: Before the first hard frost, dig up the tubers.
Dry and Store: Cut off the foliage, let the tubers dry in a cool, airy spot for a few days, and then store them in a box of peat moss or sawdust in a cool, dark place (like a basement) until spring.

Bringing Potted Begonias Inside

Wax begonias and Rex begonias can be brought inside and kept as houseplants over the winter. Before the nighttime temperatures drop below 50°F, move them back inside to a bright window. It is a good idea to check them thoroughly for any "hitchhiking" garden insects before bringing them into your home.

Realistic Expectations for Outdoor Success

When you plant begonias outside, remember that they are living things that respond to their environment. Your results will depend on your local climate and how much sun your garden receives.

In a very hot and humid summer, your begonias might grow faster but require more frequent watering. In a cooler, rainier summer, they might grow more slowly and need extra protection from soggy soil. Every garden is a little different, and that is part of the fun of gardening. By getting the basics of temperature and drainage right, you are giving your begonias the best possible start.

At Longfield Gardens, we believe that gardening should be a rewarding and enjoyable experience, backed by our 100% Quality Guarantee. Begonias are one of the most reliable ways to bring joy and color to your outdoor spaces. With their stunning variety of shapes and colors, there is a begonia for every gardener and every yard.

"The beauty of a garden is often found in the quiet, shady corners. Begonias are the perfect way to turn those overlooked spots into a vibrant outdoor retreat."

Conclusion

Planting begonias outside is a wonderful way to expand your garden's color palette. These tropical beauties are surprisingly adaptable once you understand their basic needs for warmth, filtered light, and well-drained soil. By following a few simple steps—like waiting for warm nights and hardening off your plants—you can enjoy a spectacular display of blooms and foliage all summer long.

Wait for Warmth: Ensure nighttime temperatures are consistently 50°F or higher.
Choose the Right Spot: Look for dappled shade and protection from the wind.
Water Wisely: Keep the soil moist but never waterlogged.
Hardening Off: Give your plants a week to adjust to the outdoor air.

Whether you are a seasoned gardener or just starting out, we encourage you to try adding a few begonias to your outdoor landscape this year. If you want a big, easy-care display, Begonia Non Stop Mix - Bulk Offer is a bulk option worth considering. They are a low-stress, high-reward plant that will surely become a favorite in your summer garden.

FAQ

Can begonias grow in full sun?

Most begonias prefer partial shade or filtered light. While wax begonias are more sun-tolerant than other types, they still appreciate some protection from the intense afternoon sun. For more on where begonias grow best, see Are Begonias Shade Plants? Light Tips for Best Blooms. If you do plant them in a sunnier spot, be sure to monitor the soil moisture closely, as they will dry out much faster.

Why are the leaves on my outdoor begonia turning brown?

Brown, crispy edges on begonia leaves are usually a sign of leaf scorch, which happens when the plant gets too much direct sunlight or the air is too dry. If you notice this, try moving your plant to a more shaded location or ensuring it stays well-watered during hot spells.

How often should I fertilize my begonias when they are outside?

Outdoor begonias benefit from regular feeding to support their constant blooming. We recommend using a balanced, water-soluble fertilizer every two to three weeks. Regular feeding ensures the plants have enough nutrients to maintain their lush foliage and produce flowers throughout the entire summer season. For more begonia care tips, see Tips for Growing Tuberous Begonias.

Do I need to cut back my begonias in the summer?

Begonias generally do not require heavy pruning. However, if your plants start to look a bit "leggy" or stretched out, you can pinch back the tips of the stems to encourage a bushier growth habit. You should also remove any damaged or yellowing leaves to keep the plant healthy and looking its best.