North America Native Plant

Scented Blacktorch

Botanical name: Erithalis odorifer

USDA symbol: EROD

Life cycle: perennial

Habit: shrub

Native status: Native to Puerto Rico âš˜ Native to the U.S. Virgin Islands  

Scented Blacktorch: A Fragrant Caribbean Native for Tropical Gardens If you’re lucky enough to garden in a tropical paradise, you’ve probably wondered about adding some authentic Caribbean flair to your landscape. Meet the scented blacktorch (Erithalis odorifer), a delightfully fragrant native shrub that’s been quietly beautifying the islands of Puerto ...

Scented Blacktorch: A Fragrant Caribbean Native for Tropical Gardens

If you’re lucky enough to garden in a tropical paradise, you’ve probably wondered about adding some authentic Caribbean flair to your landscape. Meet the scented blacktorch (Erithalis odorifer), a delightfully fragrant native shrub that’s been quietly beautifying the islands of Puerto Rico and the U.S. Virgin Islands for centuries.

What Makes Scented Blacktorch Special?

This perennial woody shrub earns its common name honestly – its small white flowers pack a surprisingly sweet fragrance that can perfume an entire garden corner. Growing typically 4-13 feet tall with multiple stems branching from the base, scented blacktorch forms an attractive, naturally rounded shape that works beautifully as both a standalone specimen and a hedge plant.

The glossy, dark green leaves provide year-round interest, while the clusters of tiny white blooms appear throughout much of the growing season, creating a lovely contrast against the foliage. It’s the kind of plant that makes you stop and wonder, What smells so amazing?

Where Does It Call Home?

Scented blacktorch is a true Caribbean native, naturally occurring in Puerto Rico and the U.S. Virgin Islands. This limited but significant range means it’s perfectly adapted to tropical island conditions – think warm temperatures, occasional salt spray, and periods of both wet and dry weather.

Perfect for Tropical and Coastal Gardens

If you’re designing a tropical landscape or live near the coast, scented blacktorch could be your new best friend. This adaptable shrub thrives in:

  • Coastal gardens where salt tolerance is essential
  • Tropical landscape designs seeking authentic native plants
  • Xerophytic or drought-tolerant garden schemes
  • Mixed shrub borders where fragrance is desired
  • Privacy hedges with a tropical twist

Growing Conditions and Care

One of the best things about scented blacktorch is its easygoing nature. Once established, it’s surprisingly low-maintenance:

Climate Requirements: This is strictly a warm-weather plant, suitable only for USDA hardiness zones 10-11. If you experience any frost, this isn’t the shrub for you.

Light and Soil: Scented blacktorch performs best in full sun to partial shade and appreciates well-draining soil. It’s not particularly picky about soil type, but good drainage is non-negotiable to prevent root rot.

Water Needs: While it appreciates regular water during establishment, mature plants are quite drought tolerant. This makes it an excellent choice for water-wise landscaping in appropriate climates.

Planting and Care Tips

Getting your scented blacktorch off to a great start is straightforward:

  • Plant in spring or early summer when temperatures are consistently warm
  • Space plants 4-6 feet apart if using as a hedge
  • Water regularly for the first growing season to establish roots
  • Apply a light layer of mulch to retain moisture and suppress weeds
  • Prune lightly after flowering to maintain shape if desired
  • No special fertilization required – this native is adapted to local soil conditions

Benefits for Wildlife and Pollinators

Those fragrant flowers aren’t just for human enjoyment – they’re also magnets for butterflies and other beneficial pollinators. By planting scented blacktorch, you’re creating habitat and food sources for native wildlife while supporting the local ecosystem.

Is Scented Blacktorch Right for Your Garden?

If you garden in Puerto Rico, the U.S. Virgin Islands, or similar tropical climates, scented blacktorch offers an excellent combination of beauty, fragrance, and ecological value. It’s particularly appealing if you:

  • Want to support native plant communities
  • Need a salt-tolerant coastal plant
  • Desire low-maintenance landscaping
  • Love fragrant gardens
  • Want to attract butterflies and pollinators

However, this plant isn’t suitable for temperate climates or areas that experience frost. Gardeners in cooler zones should look for cold-hardy native alternatives that provide similar benefits in their local ecosystems.

For tropical gardeners, though, scented blacktorch represents the perfect blend of native authenticity and garden appeal – a fragrant reminder that the best plants are often the ones that have called your region home for centuries.

Scented Blacktorch

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Rubiales

Family

Rubiaceae Juss. - Madder family

Genus

Erithalis P. Br. - blacktorch

Species

Erithalis odorifer Jacq. - scented blacktorch

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