North America Native Plant

Cassine

Botanical name: Cassine

USDA symbol: CASSI2

Life cycle: perennial

Habit: shrub

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

Cassine: A Native Caribbean Shrub for Tropical Gardens If you’re gardening in Puerto Rico or the U.S. Virgin Islands, you might want to get acquainted with cassine (Cassine). This native shrub offers a wonderful opportunity to support local ecosystems while adding natural beauty to your landscape. While it may not ...

Cassine: A Native Caribbean Shrub for Tropical Gardens

If you’re gardening in Puerto Rico or the U.S. Virgin Islands, you might want to get acquainted with cassine (Cassine). This native shrub offers a wonderful opportunity to support local ecosystems while adding natural beauty to your landscape. While it may not be the most well-known plant in the gardening world, its native status makes it a valuable addition to any tropical garden focused on indigenous flora.

What is Cassine?

Cassine is a perennial shrub that’s naturally at home in the Caribbean. Like most shrubs, it’s a multi-stemmed woody plant that typically stays under 13 to 16 feet tall, making it a manageable size for most garden settings. What makes cassine special is its status as a true native – it evolved right alongside the other plants and wildlife in Puerto Rico and the U.S. Virgin Islands.

Where Does Cassine Grow?

This shrub is native to Puerto Rico and the U.S. Virgin Islands, where it has adapted to the unique climate and growing conditions of these tropical islands. Its natural range is relatively limited to these Caribbean locations, making it a true regional specialty.

Why Choose Cassine for Your Garden?

There are several compelling reasons to consider cassine for your landscape:

  • Native plant benefits: As a native species, cassine is naturally adapted to local growing conditions and supports native wildlife
  • Low maintenance potential: Native plants typically require less water, fertilizer, and pest control once established
  • Ecological value: Native shrubs often provide food and habitat for local birds, insects, and other wildlife
  • Climate resilience: Plants that evolved in your area are usually better equipped to handle local weather patterns

Growing Conditions and Care

While specific growing requirements for cassine aren’t extensively documented, we can make educated guesses based on its native habitat:

  • USDA Hardiness Zones: Likely zones 10-11, suitable for year-round outdoor growing in its native range
  • Climate needs: Tropical to subtropical conditions with warm temperatures year-round
  • Maintenance: As a native plant, it should be relatively low-maintenance once established

Garden Design Ideas

Cassine can serve multiple roles in your tropical landscape:

  • Foundation plantings around buildings
  • Natural screening or privacy barriers
  • Mixed native plant borders
  • Wildlife-friendly garden areas

A Word of Caution: Limited Information

Here’s the thing about cassine – while it’s definitely a legitimate native plant of Puerto Rico and the U.S. Virgin Islands, detailed horticultural information is somewhat limited. This isn’t uncommon with lesser-known native species. If you’re interested in growing cassine, you might want to:

  • Contact local native plant societies or botanical gardens
  • Reach out to agricultural extension offices in Puerto Rico or the U.S. Virgin Islands
  • Connect with other native plant gardeners in your area

The Bottom Line

Cassine represents an opportunity to grow something truly local and special in your Caribbean garden. While we’d love to have more detailed growing information to share, its native status alone makes it worth considering. Native plants like cassine help preserve the unique character of local ecosystems while often providing easier care for gardeners.

If you can source cassine responsibly and you’re gardening within its native range, it could be a wonderful addition to your native plant collection. Just remember that sometimes the best gardening adventures come from exploring the plants that have always called your area home – even when they’re not the most famous ones in the plant world!

Cassine

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Celastrales

Family

Celastraceae R. Br. - Bittersweet family

Genus

Cassine L. - cassine

Species

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