North America Native Plant

Hillside Clover Ash

Botanical name: Tetrazygia crotonifolia

USDA symbol: TECR

Life cycle: perennial

Habit: shrub

Native status: Native to Puerto Rico  

Hillside Clover Ash: A Native Puerto Rican Shrub Worth Knowing If you’re gardening in Puerto Rico and looking for native plants to support your local ecosystem, you might want to get acquainted with hillside clover ash (Tetrazygia crotonifolia). This perennial shrub represents the kind of authentic, place-based gardening that creates ...

Hillside Clover Ash: A Native Puerto Rican Shrub Worth Knowing

If you’re gardening in Puerto Rico and looking for native plants to support your local ecosystem, you might want to get acquainted with hillside clover ash (Tetrazygia crotonifolia). This perennial shrub represents the kind of authentic, place-based gardening that creates meaningful connections between your landscape and the natural world around you.

What is Hillside Clover Ash?

Hillside clover ash is a multi-stemmed woody perennial that typically grows as a shrub, usually reaching heights of less than 13 to 16 feet. Like many shrubs, it develops several stems that arise from or near ground level, though under certain environmental conditions it might grow taller or develop a more single-stemmed form.

Where Does It Naturally Grow?

This plant is a true Puerto Rican native, naturally occurring throughout the island. Its presence there means it’s perfectly adapted to local conditions and plays a role in supporting the native ecosystem that has evolved alongside it for countless generations.

Garden Suitability and Landscape Role

As a facultative upland plant, hillside clover ash usually thrives in non-wetland conditions, though it can tolerate some moisture. This flexibility makes it potentially useful for various landscape situations, particularly if you’re working with sloped or well-drained areas.

While detailed information about this specific species is limited in gardening literature, its native status suggests it would be an excellent choice for:

  • Native plant gardens
  • Naturalized landscapes
  • Slope stabilization projects
  • Wildlife habitat restoration

Growing Conditions and Care

Unfortunately, specific growing requirements for hillside clover ash aren’t well-documented in common gardening resources. However, as a Puerto Rican native adapted to upland conditions, it likely prefers:

  • Well-draining soil
  • Conditions typical of its natural island habitat
  • Minimal intervention once established

If you’re interested in growing this plant, your best bet is to consult with local native plant societies, botanical gardens, or extension services in Puerto Rico who may have hands-on experience with cultivation.

The Bigger Picture

One of the challenges with lesser-known native plants like hillside clover ash is that detailed horticultural information can be scarce. This doesn’t mean the plant isn’t valuable—quite the opposite! It highlights the importance of supporting research and documentation of our native flora.

By choosing native plants like Tetrazygia crotonifolia, you’re supporting biodiversity, reducing the need for intensive maintenance, and creating landscapes that truly belong to their place. Even if we don’t know every detail about its care requirements, we do know it has thrived in Puerto Rico’s ecosystems for ages.

Should You Plant It?

If you’re gardening in Puerto Rico and can source this plant responsibly from native plant specialists, it could be a wonderful addition to a native landscape. The fact that it’s not commonly available in the gardening trade doesn’t diminish its ecological value—it might just make it all the more special in your garden.

Just remember that successful native gardening often means working with what wants to grow in your specific conditions rather than fighting against them. Hillside clover ash, with its natural Puerto Rican heritage, is likely to reward that approach.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Caribbean

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Hillside Clover Ash

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

Myrtales

Family

Melastomataceae Juss. - Melastome family

Genus

Tetrazygia Rich. ex DC. - clover ash

Species

Tetrazygia crotonifolia (Desr.) DC. - hillside clover ash

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