Introduction
Begonias are some of the most versatile and rewarding plants you can add to your home or garden. Whether you are looking for the shimmering, colorful foliage of a Rex begonia or the massive, rose-like blooms of a tuberous variety, these plants offer a spectacular return on very little effort. At Longfield Gardens, we have seen how a few simple care steps can transform these tropical beauties into the stars of a shaded porch or a sunny windowsill, and our Begonia Flower Bulbs for Sale collection is a good place to start.
This guide is designed for gardeners of all skill levels who want to enjoy the nonstop color and lush textures that begonias provide. We will walk through everything from choosing the right light and soil to the simple rhythms of watering and feeding. For a broader overview of begonia types and care, our Begonia Plant Guide is a helpful companion read.
By understanding the few basic needs of these plants, you can ensure they thrive from the first spring planting through the heat of summer. If you are planning a shaded display, the Spring Planted Bulbs for Shade collection offers even more options.
Identifying Your Begonia Type
Before we dive into daily care, it is helpful to know which type of begonia you are growing. While most begonias share similar needs, their growth habits and "rest" periods can vary. Identifying your plant helps you provide the specific care it needs to look its best.
Wax Begonias
Wax begonias are the classic "bedding" plants often seen in garden borders and public parks. They have succulent, waxy leaves that can be green or bronze, and they produce clusters of small white, pink, or red flowers. They are exceptionally hardy and can handle more sun than other types.
Tuberous Begonias
These are prized for their large, dramatic flowers that can resemble roses or camellias. They grow from a thick, potato-like underground stem called a tuber. Tuberous begonias are stunning in hanging baskets and containers. Unlike wax begonias, they require a period of winter dormancy to bloom again the following year.
Rex Begonias
Rex begonias are grown primarily for their incredible foliage. The leaves come in swirls of silver, purple, pink, and deep burgundy. While they do produce small flowers, the leaves are the main event. These are popular as year-round houseplants but also thrive outdoors in shady spots during the summer.
Cane Begonias (Angel Wing)
Named for their tall, bamboo-like stems and wing-shaped leaves, cane begonias are upright growers. They often feature silver spots on their leaves and drooping clusters of flowers. These are long-lived plants that can grow several feet tall over time with the right care.
Key Takeaway: Most begonias fall into one of four categories: wax, tuberous, Rex, or cane. Knowing your type helps you decide if the plant needs a winter rest or if it prefers to stay active as a houseplant.
Choosing the Best Location
Getting the light right is the most important part of begonia care. In their native habitats, most begonias grow on the forest floor under a canopy of trees. This means they are adapted to filtered light rather than the harsh, direct sun of an open field. For a quick overview, see our Are Begonias Shade or Sun Plants? guide.
Outdoor Light Requirements
For outdoor begonias, "partial shade" is the golden rule. A spot that receives gentle morning sun and is shielded from the hot afternoon sun is ideal.
- Northern Climates: In cooler regions, begonias can often tolerate more sun, especially if they are the bronze-leafed wax varieties.
- Southern Climates: In the heat of the South, begonias need deep shade during the middle of the day to prevent their leaves from scorching.
Indoor Light Requirements
If you are keeping begonias as houseplants, place them in a room that gets plenty of bright, indirect light. An east-facing window is usually a perfect match. If you only have a very sunny south-facing window, move the plant a few feet away from the glass or use a sheer curtain to soften the light.
Temperature and Airflow
Begonias love the same temperatures we do. They thrive between 65°F and 75°F. They are very sensitive to frost, so do not move them outdoors until the nighttime temperatures are consistently above 50°F. If you are not sure which zone you garden in, check the Hardiness Zone Map. Good airflow is also important to prevent mold and mildew, but avoid placing your plants directly in front of an air conditioning vent or a drafty door.
Soil and Potting Basics
Success with begonias starts from the ground up. Because their stems and leaves are succulent (meaning they hold a lot of water), they are prone to rotting if the soil stays too wet.
Understanding Drainage
"Drainage" simply refers to how fast water moves through the soil. Begonias need soil that stays moist but never stays "swampy." If you are planting in containers, always ensure there is at least one drainage hole in the bottom of the pot.
The Right Potting Mix
For container gardening, avoid using standard garden soil, which is too heavy and can compress around the roots. Instead, use a high-quality, peat-based potting mix. Look for mixes that include perlite or vermiculite—these are the small white or shiny bits that help keep the soil light and airy.
Planting Outdoors
If you are planting begonias directly into your garden beds, work some compost or organic matter into the soil first. This improves the soil structure and provides a slow-release source of nutrients.
Action Steps for Planting:
- Choose a pot with drainage holes.
- Fill the pot with a light, peat-based potting mix.
- Place the plant so the top of the root ball is level with the soil surface.
- Tamp the soil down gently to remove large air pockets.
- Water lightly to settle the roots.
Watering Your Begonia Correctly
Watering is where most gardeners feel the most pressure, but it can be very simple. The goal is to keep the soil "evenly moist." This means it should feel like a wrung-out sponge—not soaking wet, and not bone-dry.
The Finger Test
Before you reach for the watering can, use the "finger test." Stick your finger about an inch or two into the soil. If it feels dry at that depth, it is time to water. If it still feels damp, wait another day or two.
Watering from the Base
When you water, try to direct the stream at the base of the plant rather than splashing the leaves. Begonia leaves are susceptible to fungal issues if they stay wet for too long. If you are growing begonias in a hanging basket, they will dry out much faster than plants in the ground, so check them daily during the heat of summer. For a step-by-step project, see our How to Plant Begonia Hanging Baskets for Summer Color.
Adjusting for Season and Growth
Plants need more water when they are actively growing and blooming in the summer. During the winter, if you are keeping your begonias as houseplants, they will grow more slowly and require significantly less water. Always let the soil dry out more between waterings during the colder months.
Fertilizer and Nutrition
Begonias are "heavy feeders," meaning they use a lot of energy to produce those lush leaves and constant flowers. Providing a steady supply of nutrients will keep them looking vibrant all season long.
Types of Fertilizer
You have two main options for feeding your begonias:
- Slow-Release Granules: You can mix these into the soil at planting time. They slowly dissolve over several months, providing a constant "snack" for the plants.
- Liquid Fertilizer: This is a quick-acting option. Mix a balanced, water-soluble fertilizer (like a 10-10-10 formula) at half-strength and apply it every two to four weeks during the growing season.
When to Stop Feeding
Stop fertilizing your begonias in late summer or early fall. For tuberous varieties, this helps the plant prepare for its natural dormancy. For houseplants, it aligns with their slower winter growth cycle.
Simple Maintenance and Pruning
Begonias are generally low-maintenance, but a little "grooming" goes a long way in keeping the plant healthy and full.
Pinching Back for Fullness
If your begonia starts to look "leggy" (meaning it has long stems with few leaves), you can pinch off the tips of the stems. This encourages the plant to grow new branches from the base, resulting in a bushier, more attractive shape. This is especially helpful for cane and Rex begonias.
Deadheading
"Deadheading" is the process of removing faded flowers. Many modern begonia varieties, like wax begonias, are "self-cleaning," which means the old flowers fall off on their own. However, for tuberous begonias, removing the spent blooms helps the plant focus its energy on producing new flowers rather than seeds.
Removing Old Foliage
Whenever you see a leaf that is yellowed, spotted, or torn, simply snip it off with a clean pair of scissors. This keeps the plant looking tidy and improves airflow around the healthy leaves.
Key Takeaway: Regular grooming—pinching leggy stems and removing old leaves—prevents disease and keeps your begonias looking lush and full.
Overwintering Your Begonias
In most of the United States, begonias are treated as annuals because they cannot survive freezing temperatures. However, because we at Longfield Gardens value the longevity of your plants, we recommend a few ways to keep them going year after year.
Bringing Houseplants Indoors
Wax, Rex, and cane begonias can be brought inside before the first frost. Treat them for any outdoor pests with a gentle spray of water or insecticidal soap, then place them in a bright spot. They may drop a few leaves as they adjust to the lower humidity of your home, but they will soon settle in.
Storing Tuberous Begonias
Tuberous begonias need a rest. When the leaves start to yellow in the fall, stop watering. Once the foliage dies back completely, dig up the tubers.
- Brush off the excess soil.
- Let them dry in a cool, airy spot for a few days.
- Store them in a box filled with dry peat moss or sawdust.
- Keep the box in a cool, dark place (about 40-50°F) until spring.
Spring Restart
In early spring, about six to eight weeks before the last frost, you can bring the tubers back into the light. Place them on top of moist potting soil in a warm room. Once you see small pink or green sprouts, you can pot them up properly and prepare them for their move back outdoors.
Helping Your Begonia Bounce Back
Even with the best care, you might run into a few common hurdles. Most begonia issues are easy to fix once you know what the plant is trying to tell you.
Yellow Leaves
Yellowing leaves are usually a sign of overwatering. If the soil feels soggy, stop watering immediately and let the top few inches dry out. If the plant is in a pot, check to make sure the drainage hole isn't blocked.
Brown, Crunchy Edges
This is often caused by low humidity or too much direct sun. If the plant is outdoors, move it to a leafier, more shaded spot. If it is indoors, try placing the pot on a "pebble tray." This is just a shallow tray filled with pebbles and water. As the water evaporates, it creates a mini-climate of humidity around the leaves.
Powdery Mildew
This looks like a light dusting of flour on the leaves. It usually happens when the air is stagnant or the leaves stay wet. To fix it, remove the affected leaves and improve the airflow around the plant. Avoid watering late in the evening so the leaves don't stay damp overnight.
Small or Few Flowers
If your begonia has plenty of leaves but no blooms, it might need more light or more fertilizer. Try moving it to a slightly brighter spot (still avoiding direct afternoon sun) and ensure you are using a balanced fertilizer every few weeks. If you want a broader look at light tolerance, our Do Begonia Plants Like Full Sun? guide is a useful read.
Using Begonias in Your Landscape
Because begonias come in so many shapes and sizes, the design possibilities are endless. We love seeing how our customers use them to solve common garden challenges.
- Hanging Baskets: Trailing tuberous begonias are perfect for shady porches. They spill over the edges of the basket, creating a waterfall of color.
- Window Boxes: Combine wax begonias with trailing plants like ivy or sweet potato vine for a classic look that lasts all summer.
- Shady Borders: Use a mass planting of bronze-leafed wax begonias to create a colorful "ribbon" along a garden path.
- Indoor Accents: A single Rex begonia in a decorative ceramic pot makes a stunning centerpiece for a dining table or a bright bathroom.
For more design ideas in low-light spaces, the Spring Planted Bulbs for Shade collection is a great place to browse.
Conclusion
Caring for begonias is a rewarding experience that brings a tropical touch to any home or garden. By focusing on the essentials—bright indirect light, well-draining soil, and a "deep but dry" watering routine—you can enjoy their beauty throughout the growing season. Whether you are starting with a few wax begonias in a flower bed or a prize Rex begonia on your desk, these plants are sure to become a favorite.
- Identify your type to understand if the plant needs a winter rest.
- Prioritize indirect light to protect the delicate foliage and blooms.
- Check the soil moisture with your finger before watering to prevent rot.
- Feed regularly during the spring and summer to fuel nonstop growth.
If you are ready to start your own begonia collection, we invite you to explore the varieties we offer at Longfield Gardens. We stand behind the quality of our plants and are here to support you every step of the way, with helpful details on Shipping Information before you order.
"The secret to begonia success is mimicking their forest-floor origins: plenty of light, high humidity, and soil that breathes. Once you find that balance, these plants will reward you with months of spectacular color."
FAQ
Do begonias need sun or shade?
Most begonias prefer partial shade or filtered light. While wax begonias can tolerate more sun, especially in cooler climates, most varieties will scorch if exposed to intense, direct afternoon sunlight. A spot with morning sun and afternoon shade is usually perfect.
Why are my begonia leaves falling off?
Dropping leaves can be caused by several factors, but the most common are overwatering or a sudden change in temperature. If the soil is very wet, let it dry out. If you recently moved the plant from outdoors to indoors, it may just be adjusting to the new environment and should stabilize within a few weeks. If you want help choosing the right amount of sun, our Where to Plant Begonias: Sun or Shade? guide goes deeper.
How often should I water begonias?
There is no set schedule, as it depends on your home’s temperature and humidity. The best rule is to water when the top inch of soil feels dry to the touch. Always check the soil first to avoid overwatering, which is the leading cause of begonia problems. If you want to compare how begonias perform in different light, see our Are Begonias Shade or Sun Plants? guide.
Are begonias toxic to pets?
Yes, begonias are considered toxic to cats and dogs if ingested. The most toxic part of the plant is the underground portion (the tubers or rhizomes). It is best to keep these plants out of reach of curious pets to prevent any stomach upset or irritation.
