North America Native Plant

Lanceleaf Greenbrier

Botanical name: Smilax smallii

USDA symbol: SMSM

Life cycle: perennial

Habit: vine

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

Synonyms: Smilax domingensis auct. non Willd. (SMDO)  âš˜  Smilax lanceolata auct. non L. (SMLA2)   

Lanceleaf Greenbrier: A Native Vine for Wildlife-Friendly Gardens If you’re looking to create a wildlife haven in your garden while supporting native biodiversity, lanceleaf greenbrier (Smilax smallii) might just be the unsung hero your landscape needs. This southeastern native vine offers more than meets the eye, providing valuable food and ...

Lanceleaf Greenbrier: A Native Vine for Wildlife-Friendly Gardens

If you’re looking to create a wildlife haven in your garden while supporting native biodiversity, lanceleaf greenbrier (Smilax smallii) might just be the unsung hero your landscape needs. This southeastern native vine offers more than meets the eye, providing valuable food and shelter for wildlife while requiring minimal care from gardeners.

What is Lanceleaf Greenbrier?

Lanceleaf greenbrier is a perennial climbing shrub that’s native to the southeastern United States. Unlike some of its thornier relatives, this species forms dense thickets and can reach heights of up to 4-5 feet, though it often climbs higher when supported by other plants. With its lance-shaped green leaves and rapid growth rate, it’s a plant that knows how to make itself at home in the landscape.

Where Does It Grow Naturally?

This native beauty calls the southeastern states home, naturally occurring across Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina, Texas, Virginia, and Puerto Rico. It’s perfectly adapted to the climate and conditions of this region, making it an excellent choice for gardeners wanting to work with nature rather than against it.

Why Consider Planting Lanceleaf Greenbrier?

Before you dismiss this vine as just another weed, consider its impressive resume of benefits:

  • Wildlife magnet: Large animals, small mammals, and terrestrial birds all rely on lanceleaf greenbrier for 5-10% of their diet
  • Low maintenance: Once established, it requires minimal care and has low fertility requirements
  • Adaptable: Thrives in various soil types from coarse to fine textures
  • Shade tolerant: Perfect for those tricky woodland areas where other plants struggle
  • Fall interest: Produces conspicuous black berries that provide autumn color and wildlife food

The Reality Check: What to Expect

Let’s be honest – lanceleaf greenbrier isn’t for every garden or every gardener. This vigorous grower spreads rapidly through underground rhizomes and can form dense thickets. While this makes it excellent for naturalized areas and erosion control, it might overwhelm a formal flower bed faster than you can say native plant.

The flowers are small and green – not exactly showstoppers – but the real payoff comes in fall when the plant produces its attractive black berries. Think of this plant as function over form, though the lance-shaped foliage does provide nice texture in woodland settings.

Perfect Garden Settings

Lanceleaf greenbrier shines in:

  • Native plant gardens
  • Woodland and naturalized landscapes
  • Wildlife habitat areas
  • Erosion control projects
  • Areas where you want low-maintenance ground coverage

Growing Conditions and Care

One of the best things about native plants is how well they’re adapted to local conditions, and lanceleaf greenbrier is no exception:

  • Hardiness: Thrives in USDA zones 7-10
  • Soil: Adaptable to coarse, medium, and fine-textured soils with pH between 4.0-7.0
  • Moisture: Prefers moderate moisture but has low drought tolerance
  • Light: Shade tolerant, making it perfect for woodland gardens
  • Temperature: Cold hardy to -8°F

Planting and Propagation Tips

Getting started with lanceleaf greenbrier is refreshingly straightforward:

  • Seeds: Collect ripe berries in fall, clean seeds, and cold stratify over winter
  • Bare root or container plants: Plant in spring after last frost
  • Spacing: Allow 2,728-10,912 plants per acre depending on desired density
  • Establishment: Young plants show high vigor once established

Keep in mind that commercial availability is limited, so you might need to source seeds from wild populations or specialized native plant suppliers.

Managing the Spread

Given its rapid vegetative spread rate, consider these management strategies:

  • Install root barriers if planting near formal garden areas
  • Regular pruning can help contain growth
  • Choose planting locations carefully – this isn’t a plant you’ll easily remove later
  • Consider it for areas where you actually want dense coverage

The Bottom Line

Lanceleaf greenbrier isn’t going to win any beauty contests, but it’s a hardworking native that provides genuine ecological value. If you have space for a vigorous, wildlife-supporting vine and appreciate plants that practically grow themselves, this southeastern native could be perfect for your landscape. Just make sure you’re prepared for its enthusiastic growth habit and place it where it can spread without causing problems.

For gardeners focused on supporting local ecosystems and wildlife, lanceleaf greenbrier offers an authentic way to recreate native plant communities while providing year-round interest through its foliage, berries, and the wildlife it attracts.

Wildlife Status

Want to attract wildlife or keep hungry critters away from your garden? Understanding the relationship between plants and wildlife is key. While plant tags may indicate deer and rabbit resistance, they don't tell the full story. Every gardener has experienced the disappointment of purchasing "deer-resistant" plants only to find them nibbled to the ground!

The extent to which plants are resistant to animal browsing is a matter of degree. Likewise, the extent to which a plant attracts wanted visitors also varies. Whether you want a garden full or free of wildlife, learning about interactions between a plant and wild animals can help you make smarter choices for the garden you desire.

As shown below Shrubby Indian Mallow isn't a large food source for animals or birds. You can confidently add this plant to your garden and rest assured knowing it's unlikely to be devoured by four-legged visitors.

Small animals

5-10% of diet

Infrequently used as cover

Large animals

5-10% of diet

Infrequently used as cover

Terrestrial birds

5-10% of diet

Infrequently used as cover

Water birds

not a food source

not a source of cover

Sources:

Miller, J.H., and K.V. Miller. 1999. Forest plants of the southeast and their wildlife uses. Southern Weed Science Society.

Lanceleaf Greenbrier

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 smallii Morong - lanceleaf greenbrier

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