Give an Old-Fashioned Beauty New Life: Grow Wax Begonia

BEGONIA SEMPERFLORENS

For many gardeners, wax begonias – so named for their waxy leaves – have fallen out of favor and are thought of as rather old-fashioned.

Wax begonias are a gorgeous annual that's easy to grow. We share our tips: https://gardenerspath.com/plants/flowers/grow-wax-begonias/

However, it’s hard to beat these sweet little plants when you’re looking for a space-filler that adds a generous dose of colorful single or double flowers in pink, white, or red.

And while some varieties have green foliage, the types with bronze-reddish leaves add another eye-catching punch of contrast to flower beds.

Want to add a touch of old-fashioned charm to the flower beds? Try wax begonias. We share or tips for growing them at home: https://gardenerspath.com/plants/flowers/grow-wax-begonias/

Native to Brazil, Begonia semperflorens can be winter hardy in zones 10-11, but they are grown as annuals in most of the United States.

Sometimes called fibrous begonia, these deer-resistant, non-invasive plants form small clumps that grow anywhere from 6 to 18 inches tall and spread 6 to 12 inches.

Varieties and Where to Buy

The number of commercially available cultivars is expansive. The ‘Big’ series, for example, features cultivars that produces large flowers in a variety of colors and leaf shades. ‘Bada Bing’ is a series of long-blooming, sun-tolerant wax begonias that are available in pink, red, and white.

If you’re looking for larger leaves and flowers, the ‘Dragon Wing’ pink begonia is a good choice, and it’s available from Nature Hills Nursery. This variety is also available in red.

'Dragon Wing' Pink Begonia | GardenersPath.com

‘Dragon Wing’ Pink Begonia

If you’re willing to take on the challenge of growing wax begonia from seed (see more below), you might try this variety, which produces rose-colored flowers.

Rose Wax Begonia, 5000 Seeds

Get a packet of 5000 seeds from Outsidepride, available via Amazon.

Unless You Have a Lot of Patience…

Wax begonia can be very tricky to grow from seed. The seeds are tiny – like particles of dust – and have a very long germination period.

Growing from seed also requires careful attention to lighting and temperature requirements, and use of very particular soil.

Pink Wax Begonia | GardenersPath.com

Fortunately, it’s very easy to find this plant at garden centers. Or you can propagate from cuttings from your own or a friend’s begonias. Cut a stem that has several nodes (places from which leaves grow), but has not bloomed.

Cut your stem about a half inch below the lowest node you want to include on your cutting, remove the lower leaves, and place your cutting in water in a small container, such as a baby food jar.

Keep the cuttings in a warm, well-lit spot. When the roots are about an inch long, you can transplant into good-quality potting medium in a small pot. Bury at least one node.

Red Wax Begonia | GardenersPath.com

When the plants are 5 to 6 inches tall and all danger of frost has passed, you can plant them outdoors in well-drained, damp soil.

Many gardeners like begonia as a border or edging plant.

Wax begonias make an excellent addition to container gardens and flowers beds. We share our tips for growing success: https://gardenerspath.com/plants/flowers/grow-wax-begonias/

In cooler regions of the country, plant wax begonia in full sun, and keep in mind that varieties with bronze foliage tend to do better in full sun than those with green leaves. Gardeners in the south may need to give these plants some afternoon shade.

Grow Wax Begonias | GardenersPath.com

Save the tubers in the fall and replant in spring, or cut the plant back, dig it up, and plant in a container to enjoy indoors over winter.

Water Carefully

Begonias don’t require a huge amount of care. You’ll want to deadhead spent blooms to encourage more flowers, and if you want compact plants, pinch them back regularly.

Keep the soil moist, but water at the base of the plant to avoid leaf spot and the possibility of fungal diseases.

Wax Begonia: An Old Fashioned Favorite | GardenersPath.com

Fertilize every two to four weeks during the growing season with a 10-10-10 liquid fertilizer. For potted plants, we like this fertilizer from Bonide, available on Amazon. Water the plants before and after applying the fertilizer.

Bonide Liquid Plant Food 10-10-10

Luckily, B. semperflorens doesn’t suffer from any serious insect problems.

Keep an eye out for mealybugs and get rid of them by dipping cotton swabs in rubbing alcohol and applying the alcohol to the bugs.

Wax Begonias | GardenersPath.com

Alternatively, mix a preparation of 3 cups of alcohol with an equal amount of water and a tablespoon of dish soap, and spray on the plant.

If you see thrips, use an insecticidal soap such as this one from Garden Safe, available on Amazon.

Garden Safe Houseplant and Garden Insect Killer, 24-Ounce Spray

This 24-ounce spray bottle is ready to use.

What’s Old Is New Again

Does this old-fashioned charmer deserve a place in modern gardens? We think so! Its delicate flowers and attractive foliage are statement-making and worthy of inclusion in a border or as a specimen grouping.

Give an Old Fashioned Beauty New Life: Grow Wax Begonia | GardenersPath.com

“Borrow” a cutting from a neighbor, root it, plant it, bring it indoors to overwinter, and then replant in the spring. It’s the plant that keeps on giving.

Do you grow wax begonia? What are your favorite varieties? Tell us in the comments section below. And if you’re looking for another old-fashioned flowering plant that’s at home in the modern garden, check out this piece about four o’clocks.


Don’t forget to Pin It!

A collage of photos showing different views of wax begonia blooms.

Product photos via Proven Winners, Outsidepride, Bonide, and Garden Safe. Uncredited photos: Shutterstock.

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About Gretchen Heber

A former garden editor for a daily newspaper in Austin, Texas, Gretchen Heber goes through entirely too many pruners and garden gloves in a year’s time. She’s never met a succulent she didn’t like and gets really irritated every 3-4 years when Austin actually has a freeze cold enough to kill them. To Gretchen, nothing is more rewarding than a quick dash to the garden to pluck herbs to season the evening meal. And it’s definitely time for a happy dance when she’s able to beat the squirrels to the peaches, figs, or loquats.

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In our zone 11 coolish climate these plants invade everywhere 365 days a year. A bird or wind brought a seed or a chunk of a plant to my yard and in a couple years I have them everywhere flowering 365 days.