North America Native Plant

Cieneguillo

Botanical name: Myrcia deflexa

USDA symbol: MYDE

Life cycle: perennial

Habit: shrub

Native status: Native to Puerto Rico  

Synonyms: Eugenia deflexa Poir. (EUDE9)   

Cieneguillo: A Native Puerto Rican Shrub Worth Knowing Meet cieneguillo (Myrcia deflexa), a charming native shrub that calls Puerto Rico home. While this little-known member of the myrtle family might not be flooding your local nursery shelves, it represents an important piece of Puerto Rico’s natural heritage that deserves some ...

Cieneguillo: A Native Puerto Rican Shrub Worth Knowing

Meet cieneguillo (Myrcia deflexa), a charming native shrub that calls Puerto Rico home. While this little-known member of the myrtle family might not be flooding your local nursery shelves, it represents an important piece of Puerto Rico’s natural heritage that deserves some attention from native plant enthusiasts.

What Makes Cieneguillo Special?

Cieneguillo is a perennial shrub that typically grows as a multi-stemmed woody plant, usually staying under 13-16 feet in height. Like many shrubs, it develops several stems from near the ground, creating that classic bushy appearance we gardeners love. You might also see this plant listed under its botanical synonym, Eugenia deflexa, in older references.

As a true Puerto Rican native, cieneguillo has evolved specifically for the island’s unique climate and ecosystem. This means it’s naturally adapted to local conditions – always a plus when you’re trying to create a sustainable, low-maintenance landscape.

Where Does Cieneguillo Grow?

This shrub is endemic to Puerto Rico, meaning you won’t find it growing wild anywhere else in the world. It’s part of the island’s special botanical heritage, making it a meaningful choice for gardeners who want to celebrate and support local biodiversity.

Growing Conditions and Habitat

Cieneguillo has what botanists call a facultative upland wetland status. In plain English, this means it usually prefers drier, upland areas but can tolerate some wetness if needed. This flexibility could make it a useful plant for areas of your garden that experience varying moisture levels throughout the year.

Unfortunately, specific information about cieneguillo’s preferred growing conditions, care requirements, and landscape uses is quite limited. This is often the case with lesser-known native plants that haven’t been extensively studied for horticultural purposes.

Should You Plant Cieneguillo?

Here’s where things get a bit tricky. While cieneguillo is undoubtedly a legitimate native plant worthy of conservation and cultivation, the limited availability of growing information presents some challenges:

  • For Puerto Rican gardeners: If you can source this plant responsibly, it could be a wonderful addition to a native plant garden. Its shrub form makes it potentially useful for screening, informal hedging, or adding structure to plantings.
  • Limited cultivation knowledge: Without detailed growing guides, you might need to experiment and observe to learn what makes this plant happy.
  • Sourcing challenges: Finding cieneguillo at nurseries may prove difficult, as it’s not commonly cultivated.

The Bigger Picture

Plants like cieneguillo represent an interesting challenge and opportunity in native gardening. While we don’t have all the answers about its cultivation needs, supporting lesser-known natives helps preserve biodiversity and can lead to discovering new garden-worthy plants.

If you’re interested in Puerto Rican native plants but can’t find cieneguillo, consider exploring other native members of the myrtle family or consulting with local native plant societies and botanical gardens. They might have insights about this species or suggest similar natives that are better documented and more readily available.

Final Thoughts

Cieneguillo reminds us that there’s still so much to learn about our native plants. While it might not be the easiest plant to grow or find, it represents the kind of botanical treasure that makes native gardening an adventure. Sometimes the best discoveries come from the plants that don’t yet have detailed care sheets – they’re just waiting for curious gardeners to figure them out.

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

Cieneguillo

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

Myrtaceae Juss. - Myrtle family

Genus

Myrcia DC. ex Guill. - rodwood

Species

Myrcia deflexa (Poir.) DC. - cieneguillo

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