North America Native Plant

Grimes’ Dewberry

Botanical name: Rubus grimesii

USDA symbol: RUGR5

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Rubus cathartium Fernald (RUCA13)   

Grimes’ Dewberry: A Rare Native Gem Worth Growing Responsibly If you’re looking for a native groundcover that’s both beautiful and beneficial to wildlife, Grimes’ dewberry (Rubus grimesii) might just be the hidden treasure your garden needs. This charming little shrub is one of those delightful natives that doesn’t demand the ...

Rare plant alert!

Region: Conservation status by state

Status: S3S4Q: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘

Grimes’ Dewberry: A Rare Native Gem Worth Growing Responsibly

If you’re looking for a native groundcover that’s both beautiful and beneficial to wildlife, Grimes’ dewberry (Rubus grimesii) might just be the hidden treasure your garden needs. This charming little shrub is one of those delightful natives that doesn’t demand the spotlight but quietly does important work in the ecosystem.

What Makes Grimes’ Dewberry Special?

Grimes’ dewberry is a low-growing perennial shrub that stays refreshingly compact, typically reaching just 1.5 feet tall and rarely exceeding 3 feet at maturity. Don’t let its modest size fool you – this native plant packs a punch when it comes to supporting local wildlife and adding natural beauty to your landscape.

In spring, you’ll be treated to delicate white flowers that beckon pollinators like bees and butterflies. These blooms eventually give way to small, dark berries that wildlife absolutely love. The thorny, trailing stems might seem a bit rough around the edges, but that’s all part of its wild charm.

Where Does It Call Home?

This native beauty has made its home in the Mid-Atlantic region, specifically in Delaware, District of Columbia, Maryland, North Carolina, and Virginia. It’s perfectly adapted to the growing conditions in these areas, making it an excellent choice for gardeners looking to support their local ecosystem.

A Word of Caution: Rarity Matters

Here’s something important to know before you start planning: Grimes’ dewberry has a conservation status that suggests it’s somewhat uncommon in the wild. This means if you decide to grow it (and we hope you do!), please make sure you source your plants responsibly. Look for reputable native plant nurseries that propagate their stock rather than wild-collecting. Your local native plant society can often point you in the right direction.

Growing Grimes’ Dewberry Successfully

The good news is that once you find a responsibly sourced plant, Grimes’ dewberry is relatively easy to please. Here’s what it needs to thrive:

Ideal Growing Conditions

  • Light: Partial shade to full sun – it’s quite adaptable
  • Soil: Well-draining soil; it’s particularly happy in sandy soils
  • Hardiness: Suitable for USDA zones 6-9
  • Moisture: Moderate water needs once established

Perfect Garden Roles

Grimes’ dewberry shines in several landscape situations:

  • Native plant gardens: A natural choice for authentic regional plantings
  • Woodland edges: Creates a natural transition between lawn and forest
  • Naturalized areas: Perfect for low-maintenance, wildlife-friendly spaces
  • Groundcover: Provides living mulch that spreads naturally

Planting and Care Tips

Once established, Grimes’ dewberry is refreshingly low-maintenance. Plant it in spring after the last frost, giving it space to spread naturally through runners. Water regularly the first year to help it establish, then step back and let it do its thing. You might want to wear gloves when working around it – those thorns mean business!

The plant will naturally spread to form colonies, which is exactly what you want for groundcover purposes. Just keep an eye on it in smaller gardens where space is at a premium.

Wildlife Benefits

This is where Grimes’ dewberry really earns its keep. The flowers provide nectar for pollinators in spring, while the berries feed birds and small mammals throughout the growing season. The dense, thorny growth also provides excellent shelter for small wildlife – think of it as a natural wildlife apartment complex!

Is Grimes’ Dewberry Right for Your Garden?

Consider adding Grimes’ dewberry to your landscape if you:

  • Want to support native wildlife and pollinators
  • Need a low-maintenance groundcover for naturalized areas
  • Live within its native range and want to grow regional plants
  • Don’t mind a plant that spreads naturally (in a good way!)
  • Can source plants responsibly from reputable nurseries

While Grimes’ dewberry might not be the showiest plant in your garden, it’s definitely one of the hardest working. By choosing this native species, you’re not just adding a lovely groundcover – you’re helping preserve a piece of your region’s natural heritage while creating habitat for local wildlife. Now that’s what we call a win-win!

Grimes’ 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 grimesii L.H. Bailey - Grimes' dewberry

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