North America Native Plant

Cedro Macho

Botanical name: Hyeronima clusioides

USDA symbol: HYCL

Life cycle: perennial

Habit: shrub

Native status: Native to Puerto Rico  

Cedro Macho: A Rare Puerto Rican Native Worth Protecting If you’re passionate about native plants and conservation gardening, you might have stumbled across the name cedro macho (Hyeronima clusioides). This little-known Puerto Rican endemic is more than just a pretty face – it’s a conservation story that every native plant ...

Rare plant alert!

Region: Conservation status by state

Status: S2: Status is uncertain but is somewhere between the following rankings: Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘

Cedro Macho: A Rare Puerto Rican Native Worth Protecting

If you’re passionate about native plants and conservation gardening, you might have stumbled across the name cedro macho (Hyeronima clusioides). This little-known Puerto Rican endemic is more than just a pretty face – it’s a conservation story that every native plant enthusiast should know about.

What Makes Cedro Macho Special

Cedro macho is a perennial shrub that’s as rare as it is interesting. This multi-stemmed woody plant typically grows less than 13-16 feet tall, making it a manageable size for many garden settings. What makes it truly special, though, is its story of survival against the odds.

A True Puerto Rican Native

This shrub is found exclusively in Puerto Rico, making it a genuine endemic species. When we say native, we’re talking about a plant that has called this Caribbean island home long before humans arrived on the scene.

The Reality Check: This Plant is Rare

Here’s where things get serious. Cedro macho has a Global Conservation Status of S2, which translates to Imperiled. This isn’t gardening jargon – it means this species is in real trouble. With typically only 6 to 20 known occurrences and an estimated 1,000 to 3,000 individual plants remaining in the wild, every single cedro macho matters.

This rarity status puts it at extreme risk of disappearing forever, whether due to habitat loss, environmental changes, or other factors that make small populations especially vulnerable.

Should You Plant Cedro Macho?

If you’re lucky enough to live in Puerto Rico and are passionate about conservation gardening, cedro macho could be a meaningful addition to your landscape – but with a huge caveat. You must only obtain this plant through responsible sourcing. This means:

  • Never collect plants from the wild
  • Only purchase from reputable native plant nurseries that grow from ethically sourced seeds
  • Consider participating in conservation programs that propagate rare species
  • Work with local botanical gardens or conservation organizations

Growing Conditions and Care

Cedro macho is classified as Facultative Upland, which is a fancy way of saying it usually prefers non-wetland conditions but can tolerate some moisture. This suggests it might be fairly adaptable to different soil conditions, though specific growing requirements aren’t well-documented due to its rarity.

Since detailed horticultural information is limited for this rare species, anyone attempting to grow cedro macho should:

  • Consult with local Puerto Rican botanists or native plant experts
  • Observe its natural habitat conditions if possible
  • Start with basic tropical shrub care and adjust as needed
  • Document your growing experience to contribute to conservation knowledge

The Bigger Picture

While we’d love to give you a complete growing guide for cedro macho, the truth is that this plant’s rarity means there’s still a lot we don’t know about its specific needs. What we do know is that every effort to understand and protect species like this one matters enormously.

If you’re not in Puerto Rico but want to support native plant conservation, consider focusing on the rare and endangered species in your own region. Every area has plants that need our help, and the principles of responsible native gardening apply everywhere.

A Call to Conservation

Cedro macho represents something larger than just another plant for your garden – it’s a reminder of how much we stand to lose if we don’t act thoughtfully. Whether you’re able to grow this rare shrub or simply learn about it, you’re participating in the important work of plant conservation.

Remember, the best way to help rare native plants is to support their wild populations through habitat protection, responsible sourcing, and spreading awareness about their conservation needs. Sometimes the most powerful thing we can do is simply care enough to learn their stories.

Cedro Macho

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

Euphorbiales

Family

Euphorbiaceae Juss. - Spurge family

Genus

Hyeronima Allemao - hyeronima

Species

Hyeronima clusioides (Tul.) Griseb. - cedro macho

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