North America Native Plant

Cuban Dropseed

Botanical name: Sporobolus cubensis

USDA symbol: SPCU2

Life cycle: perennial

Habit: grass

Native status: Native to Puerto Rico  

Cuban Dropseed: A Rare Puerto Rican Native Grass Worth Knowing About If you’re a plant enthusiast with a passion for rare native grasses, Cuban dropseed (Sporobolus cubensis) might just pique your interest. This lesser-known perennial grass is a true Puerto Rican native that deserves recognition, even if it’s not commonly ...

Cuban Dropseed: A Rare Puerto Rican Native Grass Worth Knowing About

If you’re a plant enthusiast with a passion for rare native grasses, Cuban dropseed (Sporobolus cubensis) might just pique your interest. This lesser-known perennial grass is a true Puerto Rican native that deserves recognition, even if it’s not commonly found in garden centers.

What Is Cuban Dropseed?

Cuban dropseed is a perennial grass that belongs to the diverse Sporobolus genus, commonly known as dropseed grasses. As a graminoid, it shares characteristics with other grasses, sedges, and grass-like plants. This particular species calls Puerto Rico home and is found nowhere else in the world, making it a special part of the island’s unique flora.

Where Does It Grow?

Cuban dropseed is native to and grows exclusively in Puerto Rico. This makes it an endemic species – one that evolved in this specific location and exists nowhere else naturally on Earth.

Should You Grow Cuban Dropseed?

Here’s where things get a bit tricky. While Cuban dropseed would theoretically make an excellent choice for Puerto Rican gardeners looking to support their local ecosystem, there’s a catch – very little is known about its cultivation requirements, and it may be quite rare in the wild.

The Good News

  • It’s a true Puerto Rican native, supporting local biodiversity
  • As a perennial grass, it likely provides habitat and food for native insects and birds
  • Native grasses typically require less water and maintenance once established
  • It would be perfect for authentic native plant gardens in Puerto Rico

The Challenge

  • Limited availability – you won’t find this at your local nursery
  • Unknown cultivation requirements
  • Potentially rare status means it should only be grown from ethically sourced material
  • Not suitable for gardeners outside of Puerto Rico’s climate zone

Growing Conditions and Care

Unfortunately, specific growing requirements for Cuban dropseed aren’t well-documented in horticultural literature. However, based on its native status and grass family characteristics, it likely prefers:

  • Puerto Rico’s tropical climate conditions
  • Well-draining soils
  • Natural rainfall patterns of its native habitat
  • Full to partial sun exposure (typical for most grasses)

A Word of Caution

If you’re interested in growing Cuban dropseed, it’s crucial to source it responsibly. Given its limited distribution and the lack of information about its conservation status, any material should come from ethical propagation rather than wild collection. Consider contacting local botanical gardens, native plant societies, or conservation organizations in Puerto Rico for guidance.

Alternative Native Grasses

If you’re in Puerto Rico and looking for native grasses that are easier to find and grow, consider exploring other native Sporobolus species or Caribbean native grasses that might be more readily available and better understood horticulturally.

The Bottom Line

Cuban dropseed represents the fascinating but challenging world of rare endemic plants. While it would undoubtedly be a treasure in the right garden, its rarity and our limited understanding of its needs make it more of a conservation priority than a typical garden plant. For most gardeners, appreciating it from afar while supporting more readily available native plants might be the best approach – at least until we know more about how to cultivate this Puerto Rican gem successfully.

Cuban Dropseed

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Poaceae Barnhart - Grass family

Genus

Sporobolus R. Br. - dropseed

Species

Sporobolus cubensis Hitchc. - Cuban dropseed

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