North America Non-native Plant

Scarlet Begonia

Botanical name: Begonia coccinea

USDA symbol: BECO

Life cycle: perennial

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Puerto Rico  

Scarlet Begonia: A Vibrant Addition to Your Shade Garden If you’re looking to add a splash of brilliant color to those tricky shady spots in your garden, the scarlet begonia (Begonia coccinea) might just catch your eye. With its striking red blooms and glossy green foliage, this perennial has been ...

Scarlet Begonia: A Vibrant Addition to Your Shade Garden

If you’re looking to add a splash of brilliant color to those tricky shady spots in your garden, the scarlet begonia (Begonia coccinea) might just catch your eye. With its striking red blooms and glossy green foliage, this perennial has been winning over gardeners for generations – though it comes with a few considerations worth knowing about.

What Makes Scarlet Begonia Special

The scarlet begonia lives up to its name with vibrant red flowers that seem to glow even in shadowy corners. This compact, bushy plant produces clusters of bright scarlet blooms throughout the growing season, creating a stunning contrast against its glossy, deep green leaves. The flowers have a waxy texture and can bloom almost continuously in the right conditions, making it a reliable source of color when many other plants struggle in low light.

Where It Comes From

Originally hailing from Brazil and other parts of South America, Begonia coccinea has traveled far from its tropical homeland. In the United States, it has established itself in Puerto Rico, where it now reproduces on its own in the wild. This adaptability speaks to its resilience, though it also means gardeners should be mindful of its spreading potential.

Why You Might Want to Grow It

There are several compelling reasons why gardeners gravitate toward scarlet begonia:

  • Thrives in shade where many flowering plants struggle
  • Produces continuous blooms throughout the growing season
  • Relatively low maintenance once established
  • Works beautifully in containers and hanging baskets
  • Attracts some pollinators to shaded areas
  • Can be grown indoors as a houseplant

Growing Conditions and Care

Scarlet begonia is surprisingly easy-going, but it does have some preferences. It thrives in USDA hardiness zones 9-11, making it suitable for warm climates year-round. In cooler areas, it makes an excellent annual or can be brought indoors during winter.

Here’s what your scarlet begonia needs to flourish:

  • Light: Partial shade to full shade – avoid harsh direct sunlight
  • Soil: Well-draining, consistently moist soil rich in organic matter
  • Water: Regular watering, but avoid waterlogged conditions
  • Humidity: Appreciates higher humidity levels
  • Temperature: Frost-tender; bring indoors if temperatures drop below 50°F

Planting and Maintenance Tips

Getting your scarlet begonia off to a good start is straightforward. Plant it in a location that receives morning sun but afternoon shade, or in consistently dappled light. Amend heavy clay soils with compost to improve drainage, as soggy roots can lead to rot.

Regular care involves:

  • Watering when the top inch of soil feels dry
  • Pinching spent flowers to encourage more blooms
  • Light fertilizing during the growing season
  • Watching for common pests like aphids or spider mites

Garden Design Ideas

Scarlet begonia shines in several garden settings. Use it as a colorful groundcover under trees, or let it spill over the edges of containers and hanging baskets. It pairs beautifully with other shade-loving plants like ferns, hostas, and caladiums. In tropical-style gardens, it adds authentic flair alongside palms and other exotic plants.

A Word About Native Alternatives

While scarlet begonia can be a lovely addition to your garden, it’s worth considering that it’s not native to most of the United States. If you’re interested in supporting local ecosystems, you might explore native alternatives that offer similar benefits. Coral bells (Heuchera species), wild columbine (Aquilegia canadensis), or native impatiens species can provide beautiful color in shaded areas while supporting local wildlife.

The Bottom Line

Scarlet begonia offers reliable color and relatively easy care for shade gardens, making it an understandable choice for gardeners seeking vibrant blooms in challenging spots. While it’s not native to most areas where it’s grown, it can be enjoyed responsibly when planted thoughtfully. Whether you choose to grow it or explore native alternatives, the key is creating a garden that brings you joy while being mindful of the broader environment.

Scarlet Begonia

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Violales

Family

Begoniaceae C. Agardh - Begonia family

Genus

Begonia L. - begonia

Species

Begonia coccinea Hook. - scarlet begonia

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA