North America Native Plant

Woodborder Dewberry

Botanical name: Rubus obvius

USDA symbol: RUOB4

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Woodborder Dewberry: A Rare Native Gem Worth Knowing Meet the woodborder dewberry (Rubus obvius), one of Maryland’s most mysterious native plants. If you’ve never heard of this little shrub, you’re not alone – it’s so rare that even experienced native plant enthusiasts might scratch their heads when they hear its ...

Rare plant alert!

Region: Conservation status by state

Status: SUSHQ: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Possibly Extinct: Known only from historical occurrences. Still some hope of rediscovery ⚘ Currently unrankable due to lack of information or due to substantially conflicting information about status or trends. ⚘

Woodborder Dewberry: A Rare Native Gem Worth Knowing

Meet the woodborder dewberry (Rubus obvius), one of Maryland’s most mysterious native plants. If you’ve never heard of this little shrub, you’re not alone – it’s so rare that even experienced native plant enthusiasts might scratch their heads when they hear its name.

What Makes Woodborder Dewberry Special?

This perennial native belongs to the same genus as blackberries and raspberries, but don’t expect to find it at your local nursery. Rubus obvius is a low-growing shrub that stays compact, typically reaching less than 1.5 feet tall and never exceeding 3 feet at maturity. Its modest stature and ground-hugging habit make it quite different from its taller, more familiar cousins.

Where Does It Call Home?

Currently, woodborder dewberry is documented only in Maryland, making it one of the state’s botanical treasures. Its extremely limited geographic distribution is part of what makes this species so intriguing – and so rare.

The Rarity Factor: Proceed with Caution

Here’s where things get interesting (and a bit concerning). Woodborder dewberry has an undefined conservation status, which means scientists aren’t entirely sure how threatened this species might be. When a plant is this rare and poorly documented, it raises some important questions for gardeners who care about conservation.

If you’re considering adding this species to your garden, here are some crucial points to consider:

  • Ensure any plant material is responsibly and legally sourced
  • Never collect plants from the wild
  • Consider whether your garden can truly support such a rare species
  • Verify the plant’s identity with experts before purchasing

Growing Challenges and Unknowns

Unfortunately, there’s a significant gap in our knowledge about how to successfully cultivate woodborder dewberry. We don’t have reliable information about its preferred growing conditions, soil requirements, or care needs. This lack of cultivation information makes it a challenging choice for most gardeners, even those experienced with native plants.

Should You Plant Woodborder Dewberry?

Given its rarity and the unknowns surrounding its cultivation, woodborder dewberry isn’t a plant we’d recommend for most gardens. Instead, consider these wonderful alternatives that offer similar benefits and are easier to source and grow:

  • Common dewberry (Rubus flagellaris)
  • Wild strawberry (Fragaria virginiana)
  • Winterberry (Ilex verticillata) for low-growing native shrubs

The Bigger Picture

While woodborder dewberry might not be the right choice for your garden, learning about rare native species like this one helps us appreciate the incredible diversity of our local ecosystems. These lesser-known plants remind us that there’s still so much to discover and protect in our natural world.

If you’re passionate about supporting rare native plants, consider volunteering with local conservation organizations or supporting habitat preservation efforts in Maryland. Sometimes the best way to help a rare plant is to protect the wild spaces where it naturally occurs.

Have you encountered any rare native plants in your area? The world of native gardening is full of surprises, and every region has its own botanical mysteries waiting to be discovered and appreciated.

Woodborder Dewberry

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

Rosales

Family

Rosaceae Juss. - Rose family

Genus

Rubus L. - blackberry

Species

Rubus obvius L.H. Bailey - woodborder dewberry

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