North America Native Plant

Biltmore’s Carrionflower

Botanical name: Smilax biltmoreana

USDA symbol: SMBI

Life cycle: perennial

Habit: vine

Native status: Native to the lower 48 states  

Synonyms: Nemexia biltmoreana Small (NEBI2)  âš˜  Smilax ecirrhata (Engelm. ex Kunth) S. Watson var. biltmoreana (Small) H.E. Ahles (SMECB)   

Biltmore’s Carrionflower: A Hidden Gem for Southeastern Shade Gardens If you’re looking for a native ground cover that thrives in the shadowy corners of your garden, meet Biltmore’s carrionflower (Smilax biltmoreana). Don’t let the unusual name fool you—this southeastern native is a charming addition to woodland gardens and naturalistic landscapes. ...

Biltmore’s Carrionflower: A Hidden Gem for Southeastern Shade Gardens

If you’re looking for a native ground cover that thrives in the shadowy corners of your garden, meet Biltmore’s carrionflower (Smilax biltmoreana). Don’t let the unusual name fool you—this southeastern native is a charming addition to woodland gardens and naturalistic landscapes. While it may not have the flashiest blooms, this perennial vine offers subtle beauty and valuable ecological benefits that make it worth considering for your native plant collection.

What is Biltmore’s Carrionflower?

Biltmore’s carrionflower is a native perennial vine belonging to the Smilax genus, a group of plants commonly known as greenbriers. Unlike some of its thorny relatives, this species is a gentler garden companion. As a forb herb, it lacks the woody stems of shrubs and trees, instead producing soft, herbaceous growth that emerges fresh each growing season.

This southeastern native has been quietly growing in the wild across Alabama, Florida, Georgia, Kentucky, North Carolina, South Carolina, and Tennessee for centuries. It’s perfectly adapted to the region’s climate and growing conditions, making it an excellent choice for gardeners seeking low-maintenance native plants.

Why Choose Biltmore’s Carrionflower for Your Garden?

Here are several compelling reasons to consider this native vine:

  • True native status: Supporting local ecosystems by choosing plants that evolved in your region
  • Low maintenance: Once established, it requires minimal care and watering
  • Shade tolerance: Perfect for those challenging shady spots where many plants struggle
  • Wildlife value: Provides food and habitat for native insects and birds
  • Unique character: Adds textural interest with heart-shaped leaves and climbing habit

Appearance and Growth Habits

Biltmore’s carrionflower produces attractive heart-shaped leaves that create a lush, green carpet when grown as ground cover or an elegant climbing display when given support. In late spring to early summer, small greenish flowers appear—while not showy, they attract beneficial insects to your garden. These blooms later develop into dark berries that provide food for wildlife.

As a perennial, this plant returns year after year, gradually spreading to fill available space. Its climbing nature allows it to scramble over rocks, fallen logs, or up garden structures, making it versatile for various landscape applications.

Perfect Garden Situations

Biltmore’s carrionflower shines in several garden settings:

  • Woodland gardens: Mimics its natural forest floor habitat
  • Shade gardens: Thrives where sun-loving plants fail
  • Native plant gardens: Supports regional biodiversity
  • Naturalistic landscapes: Creates authentic, wild-looking plantings
  • Erosion control: Helps stabilize slopes with its spreading habit

Growing Conditions and Care

One of the best things about native plants is how well they’re suited to local conditions, and Biltmore’s carrionflower is no exception. Here’s what this southeastern native prefers:

Light Requirements

Partial to full shade works best, though it can tolerate some morning sun. Think dappled sunlight filtering through tree canopies—just like its natural forest habitat.

Soil Preferences

Moist, well-draining soil rich in organic matter is ideal. It appreciates the kind of loose, leafy soil found on forest floors. While adaptable to various soil types, avoid waterlogged conditions.

Climate Considerations

Hardy in USDA zones 6-9, this plant is well-suited to the southeastern climate. It handles humidity well and is adapted to the region’s rainfall patterns.

Planting and Establishment Tips

Getting Biltmore’s carrionflower established in your garden is straightforward:

  • Timing: Plant in fall or early spring when temperatures are moderate
  • Soil preparation: Amend heavy clay soils with compost to improve drainage
  • Spacing: Allow room for spreading—this plant will gradually fill available space
  • Initial watering: Keep soil consistently moist during the first growing season
  • Mulching: Apply a layer of organic mulch to retain moisture and suppress weeds

Long-term Care

Once established, Biltmore’s carrionflower is refreshingly low-maintenance. Water during extended dry periods, and consider adding compost annually to maintain soil health. The plant may spread via underground rhizomes, so monitor its growth and trim back if needed to keep it within desired bounds.

Ecological Benefits

By choosing native plants like Biltmore’s carrionflower, you’re supporting local wildlife and ecosystems. The flowers provide nectar for small insects, while the berries feed birds and small mammals. The dense foliage offers shelter for various creatures, contributing to your garden’s overall biodiversity.

Is Biltmore’s Carrionflower Right for Your Garden?

Consider this native vine if you have shady areas that need ground cover, want to support local wildlife, or are creating a naturalistic woodland garden. It’s particularly valuable for gardeners in the southeastern states who want to incorporate more native plants into their landscapes.

While it may not be the showiest plant in your garden, Biltmore’s carrionflower offers quiet beauty, ecological value, and the satisfaction of growing a plant that truly belongs in your local landscape. For gardeners seeking authentic native plants that support regional ecosystems, this southeastern gem deserves serious consideration.

Biltmore’s Carrionflower

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Liliales

Family

Smilacaceae Vent. - Catbrier family

Genus

Smilax L. - greenbrier

Species

Smilax biltmoreana (Small) J.B.S. Norton ex Pennell - Biltmore's carrionflower

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