North America Native Plant

Blacktorch

Botanical name: Erithalis

USDA symbol: ERITH

Life cycle: perennial

Habit: shrub

Native status: Native to the lower 48 states âš˜ Native to Navassa Island âš˜ Native to Puerto Rico âš˜ Native to the U.S. Virgin Islands  

Blacktorch (Erithalis): A Hidden Gem for Coastal Native Gardens If you’re searching for a tough, beautiful native shrub that can handle whatever Mother Nature throws at it, let me introduce you to blacktorch. This unassuming Caribbean beauty might not be the flashiest plant in the nursery, but it’s got some ...

Blacktorch (Erithalis): A Hidden Gem for Coastal Native Gardens

If you’re searching for a tough, beautiful native shrub that can handle whatever Mother Nature throws at it, let me introduce you to blacktorch. This unassuming Caribbean beauty might not be the flashiest plant in the nursery, but it’s got some serious staying power that makes it worth considering for your coastal garden.

What Is Blacktorch?

Blacktorch (Erithalis) is a native perennial shrub that naturally calls the warm coastal areas of Florida, Puerto Rico, the U.S. Virgin Islands, and Navassa Island home. As a true shrub, it typically grows as a multi-stemmed woody plant that stays under 13-16 feet tall, though most specimens you’ll encounter will be much more compact and manageable for home landscapes.

Where Does Blacktorch Grow?

This native beauty has a relatively limited but strategic natural range. You’ll find blacktorch growing wild in Florida, Puerto Rico, the Virgin Islands, and Navassa Island – all places where plants need to be tough enough to handle salt spray, sandy soils, and intense sun.

Why Consider Blacktorch for Your Garden?

Here’s where blacktorch really shines – it’s the ultimate low-maintenance coastal plant. If you live in USDA hardiness zones 10-11 and deal with challenging coastal conditions, this shrub could be your new best friend.

Aesthetic Appeal

Don’t let the name blacktorch fool you – this plant is actually quite attractive. It produces clusters of small, fragrant white flowers that add a delicate beauty to the landscape. The glossy, dark green leaves provide year-round interest and create a nice backdrop for the blooms. Its compact, naturally rounded form makes it perfect for structured landscapes or more naturalized settings.

Pollinator and Wildlife Benefits

Those sweetly fragrant white flowers aren’t just pretty to look at – they’re magnets for butterflies and other small pollinators. By planting blacktorch, you’re providing valuable nectar sources for local wildlife while supporting your native ecosystem.

Growing Conditions and Care

The best part about blacktorch? It’s refreshingly easy to grow once you understand its preferences.

Light and Soil Requirements

  • Thrives in full sun to partial shade
  • Prefers well-draining, sandy soils (perfect for coastal areas)
  • Excellent salt tolerance makes it ideal for oceanfront properties
  • Drought tolerant once established

Planting Tips

When planting blacktorch, choose a location that gets good drainage – soggy soil is about the only thing that will make this tough plant unhappy. Spring planting gives it the best chance to establish before any potential cold snaps (though in zones 10-11, this is rarely a concern).

Maintenance

Here’s the real beauty of blacktorch – it’s practically maintenance-free. Water regularly during the first growing season to help establish roots, then step back and let nature take over. The only pruning you might want to do is light shaping after the flowering period to maintain your desired form.

Landscape Uses

Blacktorch works wonderfully in several garden settings:

  • Coastal gardens: Its salt tolerance makes it perfect for beachfront properties
  • Native plant gardens: Supports local ecosystems while requiring minimal inputs
  • Xerophytic landscapes: Thrives in dry, low-water gardens
  • Specimen planting: Works well as a focal point in smaller spaces
  • Naturalized areas: Great for creating low-maintenance native habitat

Is Blacktorch Right for Your Garden?

Blacktorch is an excellent choice if you’re looking for a native plant that can handle tough coastal conditions while providing year-round interest and pollinator support. It’s particularly well-suited for gardeners in zones 10-11 who want beautiful, low-maintenance landscaping that works with nature rather than against it.

The main limitation is its hardiness zone requirement – this is definitely a warm-climate plant that won’t survive freezing temperatures. But if you’re in the right zone and dealing with sandy soils, salt exposure, or drought conditions, blacktorch might just be the perfect addition to your native plant palette.

Remember, choosing native plants like blacktorch isn’t just good for your garden – it’s good for your local ecosystem too. You’ll be supporting native pollinators, reducing maintenance needs, and creating landscapes that truly belong in your area. Sometimes the best plants are the ones that have been quietly thriving in your region all along.

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

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