North America Native Plant

Roadside Woodrose

Botanical name: Merremia cissoides

USDA symbol: MECI5

Life cycle: perennial

Habit: vine

Native status: Native to the lower 48 states âš˜ Native to Puerto Rico  

Roadside Woodrose: A Lesser-Known Native Treasure If you’re looking to add authentic native charm to your Florida or Caribbean-inspired garden, you might want to get acquainted with roadside woodrose. This perennial native has been quietly growing in its natural habitat, waiting for more gardeners to discover its potential. What is ...

Roadside Woodrose: A Lesser-Known Native Treasure

If you’re looking to add authentic native charm to your Florida or Caribbean-inspired garden, you might want to get acquainted with roadside woodrose. This perennial native has been quietly growing in its natural habitat, waiting for more gardeners to discover its potential.

What is Roadside Woodrose?

Roadside woodrose (Merremia cissoides) is a native perennial forb that belongs to the morning glory family. As a forb, it’s essentially a non-woody flowering plant that returns year after year, making it a reliable addition to native plant gardens. Unlike its tree and shrub neighbors, this herbaceous beauty keeps its growing points at or below ground level, helping it survive through different seasons.

Where Does Roadside Woodrose Call Home?

This native gem has a somewhat limited natural range, making it a special find for native plant enthusiasts. Roadside woodrose is naturally found in Florida and Puerto Rico, where it has adapted to local growing conditions over thousands of years. As a true native of these regions, it plays an important role in supporting local ecosystems.

Why Consider Roadside Woodrose for Your Garden?

Native plants like roadside woodrose offer several advantages for environmentally conscious gardeners:

  • Supports local wildlife and pollinators that have co-evolved with native species
  • Requires less water and maintenance once established
  • Helps preserve regional plant diversity
  • Connects your garden to the natural heritage of your area

The Challenge: Limited Growing Information

Here’s where roadside woodrose presents both an opportunity and a challenge. While this native species has clear ecological value, detailed cultivation information is surprisingly scarce. This isn’t uncommon with lesser-known native species that haven’t yet caught the attention of mainstream horticulture.

What we do know is that as a native Florida and Puerto Rican species, it likely prefers warm, subtropical conditions and has adapted to the specific soil and climate patterns of these regions.

Growing Roadside Woodrose: A Pioneer’s Approach

If you’re interested in growing roadside woodrose, you’ll be somewhat of a pioneer gardener. Here are some general guidelines based on its native habitat:

  • Best suited for USDA zones where it naturally occurs (likely zones 9-11)
  • Choose a location that mimics its natural roadside habitat
  • Provide well-draining soil, as most native forbs prefer good drainage
  • Start with small plantings to observe how it behaves in your specific garden conditions

Sourcing and Responsibility

If you decide to try growing roadside woodrose, make sure to source it responsibly. Look for native plant nurseries that specialize in regional species, or contact local native plant societies for guidance. Never collect plants from wild populations, as this can harm natural ecosystems.

The Bottom Line

Roadside woodrose represents the kind of native species that deserves more attention from gardeners and researchers alike. While growing information may be limited, its status as a native species makes it worth considering for appropriate gardens in Florida and Puerto Rico. Just be prepared for some experimentation as you learn what this lesser-known native prefers in cultivation.

Sometimes the most rewarding gardening experiences come from growing plants that haven’t been thoroughly documented yet. You might just become one of the first gardeners to really understand how to successfully cultivate this native treasure.

Roadside Woodrose

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Solanales

Family

Convolvulaceae Juss. - Morning-glory family

Genus

Merremia Dennst. ex Endl. - woodrose

Species

Merremia cissoides (Lam.) Hallier f. - roadside woodrose

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