North America Native Plant

Tangled Dewberry

Botanical name: Rubus plexus

USDA symbol: RUPL3

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Tangled Dewberry: A Rare Native Treasure for Wetland Gardens If you’re a gardener who loves discovering uncommon native plants, tangled dewberry (Rubus plexus) might just capture your imagination. This intriguing little shrub is one of nature’s more elusive characters, and there’s a good reason you’ve probably never encountered it at ...

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. ⚘

Tangled Dewberry: A Rare Native Treasure for Wetland Gardens

If you’re a gardener who loves discovering uncommon native plants, tangled dewberry (Rubus plexus) might just capture your imagination. This intriguing little shrub is one of nature’s more elusive characters, and there’s a good reason you’ve probably never encountered it at your local garden center.

What Makes Tangled Dewberry Special?

Tangled dewberry is a perennial native plant that belongs to the same family as raspberries and blackberries. True to its common name, this low-growing shrub creates a delightfully tangled appearance as it spreads. Don’t expect a towering presence in your garden—this modest beauty stays under 1.5 feet tall and never exceeds 3 feet at maturity, making it perfect for groundcover applications.

Where Does Tangled Dewberry Call Home?

This native species is quite the homebody, naturally occurring only in Virginia within the lower 48 states. Its extremely limited geographic distribution makes it a true regional specialty plant that’s deeply connected to its specific ecosystem.

A Wetland Specialist

Here’s where tangled dewberry gets really interesting for wetland gardeners. In the Atlantic and Gulf Coastal Plain region, this plant has an Obligate Wetland status, which means it almost always occurs in wetlands. If you have a boggy area, rain garden, or consistently moist spot that challenges other plants, tangled dewberry might be exactly what you need.

Should You Plant Tangled Dewberry?

Before you get too excited about adding this rare beauty to your garden, there are some important considerations:

  • Rarity Alert: Tangled dewberry has a Global Conservation Status that suggests it may be of conservation concern
  • Limited Availability: Due to its rarity and restricted range, finding this plant commercially is extremely unlikely
  • Specialized Habitat: This plant thrives only in wetland conditions, so it won’t work for typical garden beds

Growing Tangled Dewberry Successfully

If you’re fortunate enough to source this plant responsibly (and we cannot stress enough—only from ethical, conservation-minded sources), here’s what you need to know:

Ideal Conditions

  • Moisture: Consistent wetland conditions are essential
  • Location: Best suited for Virginia’s climate and ecosystem
  • Space: Allow room for its naturally spreading, tangled growth habit

Garden Applications

Tangled dewberry works beautifully in:

  • Native wetland gardens
  • Rain gardens and bioswales
  • Restoration projects in appropriate regions
  • Wildlife habitat gardens near water features

The Responsible Choice

Given tangled dewberry’s rarity and limited distribution, we strongly recommend that most gardeners explore other native Rubus species that are more readily available and better suited to cultivation. However, if you live in Virginia and have appropriate wetland conditions, consider reaching out to native plant societies or conservation organizations who might be working with this species in restoration efforts.

Sometimes the most valuable thing we can do as gardeners is appreciate rare plants in their natural habitats rather than trying to bring them into our gardens. Tangled dewberry serves as a beautiful reminder that some of nature’s treasures are best left to thrive where they belong—in the wild wetlands they call home.

Tangled 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 plexus Fernald - tangled dewberry

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