North America Native Plant

Saw Greenbrier

Botanical name: Smilax bonanox var. bonanox

USDA symbol: SMBOB2

Life cycle: perennial

Habit: vine

Native status: Native to the lower 48 states  

Saw Greenbrier: A Thorny Native Vine Worth Considering for Your Wild Garden If you’re looking to add some natural character to your landscape while supporting local wildlife, saw greenbrier (Smilax bonanox var. bonanox) might just be the perfect native plant for you. This perennial woody vine brings a touch of ...

Saw Greenbrier: A Thorny Native Vine Worth Considering for Your Wild Garden

If you’re looking to add some natural character to your landscape while supporting local wildlife, saw greenbrier (Smilax bonanox var. bonanox) might just be the perfect native plant for you. This perennial woody vine brings a touch of wild authenticity to gardens across much of the eastern and central United States, though it’s definitely not for every gardener or every garden space.

What Makes Saw Greenbrier Special?

Saw greenbrier is a native climbing shrub that typically grows as a multi-stemmed woody vine, usually staying under 13-16 feet in height. Don’t let the name fool you – while it does have thorns, this native plant offers some wonderful benefits for wildlife-focused gardeners. The heart-shaped leaves create an attractive natural screen, and the small greenish flowers give way to dark blue-black berries that wildlife absolutely love.

Where Does It Grow Naturally?

This native beauty has quite an impressive range across the lower 48 states. You’ll find saw greenbrier growing naturally in Alabama, Arkansas, Delaware, Florida, Georgia, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maryland, Mississippi, Missouri, North Carolina, Ohio, Oklahoma, South Carolina, Tennessee, Texas, and Virginia. It’s truly a plant that knows how to make itself at home across diverse landscapes.

Should You Plant Saw Greenbrier?

Here’s where it gets interesting – saw greenbrier is definitely a know what you’re getting into kind of plant. It’s perfect if you:

  • Want to create natural wildlife habitat in your yard
  • Have a naturalized or woodland garden style
  • Need erosion control on slopes or challenging areas
  • Appreciate low-maintenance native plants
  • Don’t mind a plant with thorns and a somewhat wild appearance

However, you might want to skip this one if you have small children who play in the garden regularly, prefer a formal landscape design, or need plants for high-traffic areas. Those thorns are no joke!

Growing Conditions and Care

One of the best things about saw greenbrier is how adaptable it is. This hardy native thrives in USDA hardiness zones 6-9 and isn’t particularly fussy about growing conditions. It handles both sunny and shady spots well, adapts to various soil types, and becomes quite drought tolerant once established. The key is providing well-draining soil – like many native plants, it doesn’t appreciate soggy feet.

Planting and Maintenance Tips

Getting started with saw greenbrier is relatively straightforward. You can plant it from seed or root divisions, though keep in mind you’ll need to provide sturdy support for this climbing vine. A fence, trellis, or even existing trees and shrubs can work well.

The beauty of native plants like saw greenbrier is their low-maintenance nature. Once established, this vine pretty much takes care of itself. If you need to prune it back, late winter is the best time to tackle that job – just don’t forget your thick gloves!

Wildlife Benefits

This is where saw greenbrier really shines. The small flowers provide nectar for various insects and bees, supporting local pollinators. The dark berries are a favorite food source for birds, and the thorny structure provides excellent nesting sites and protection for small wildlife. If you’re trying to create a true wildlife habitat, this native vine is a fantastic addition.

The Bottom Line

Saw greenbrier isn’t the right choice for every garden, but for those looking to embrace native plants and create wildlife-friendly spaces, it’s definitely worth considering. Its natural range across so many states speaks to its adaptability, and its wildlife benefits make it a valuable addition to any naturalized landscape. Just remember – this is a plant that brings the wild into your garden, thorns and all!

Saw 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 bona-nox L. - saw greenbrier

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