Smilax rotundifolia
IOverview
Overview
Smilax rotundifolia, commonly known as American greenbrier or catbrier, is a deciduous vine native to the eastern United States and southeastern Canada. It thrives in moist soils and partial sun to full shade conditions, making it adaptable to various environments within its range from Maine to Texas and southward. This plant is valued for its edible shoots, leaves, and roots, which can be used in cooking or herbal remedies. One distinctive feature of S. rotundifolia is its ability to grow up to 12 meters in height, forming dense thickets that provide both ornamental interest and practical uses.
What is Smilax rotundifolia?
Smilax rotundifolia, commonly known as American greenbrier or catbrier, is a deciduous vine native to the eastern United States and southeastern Canada. It thrives in moist soils and partial sun to full shade conditions, making it adaptable to various environments within its range from Maine to Texas and southward.
What is Smilax rotundifolia used for?
Traditionally used for digestion, immune support. Each claim is evidence-rated — see Section II for full citations.
IIBenefits & evidence
2 claims · traditional-use context
Benefits & evidence
2 claims · traditional-use context- Smilax rotundifolia has been traditionally used in herbal medicine to aid digestion, often prepared as a tea. It is believed to help soothe digestive discomfort and promote healthy gastrointestinal function.
The mechanism by which Smilax rotundifolia aids digestion is not fully characterised but may involve compounds that support the gut's natural processes.
▲ ModerateDigestion → - Smilax rotundifolia has been traditionally used in Chinese medicine to support immune function, often prepared as a decoction. It is believed to help maintain overall health and resilience against common ailments.
The mechanism by which Smilax rotundifolia supports the immune system is not fully characterised but may involve bioactive compounds that modulate inflammatory responses.
▲ ModerateImmune support →
VCultivation
Cultivation
How to grow Smilax rotundifolia for the first time
Start with a simple planting of Smilax rotundifolia to observe its growth and adapt your gardening skills.
- 1
What you'll need
A young plant or seeds, a pot if container growing is preferred, and basic gardening tools like a trowel.
- 2
Best time to plant
Plant in spring when the soil has warmed up or in fall before the first frost.
- 3
Soil and container prep
Ensure the soil is well-draining with a mix of light, medium, and heavy textures. For containers, use a potting mix suitable for your climate zone.
- 4
Sowing or transplanting
Transplant young plants directly into the garden or start seeds indoors 4-6 weeks before the last frost date.
- 5
First two weeks
Water regularly to keep the soil moist but not waterlogged. Place in a partially shaded area to avoid direct sunlight.
- 6
Ongoing care
Provide partial shade and regular watering, especially during dry spells. Mulch around the plant to retain moisture and suppress weeds.
- 7
Harvest or pruning
Prune back any dead or overgrown parts in late winter or early spring to encourage new growth.
VIEdible & utility
Edible & utility
VIIDistribution
51 native · 5 introduced
Distribution
51 native · 5 introducedIXSpecimen gallery
1 image
Specimen gallery
1 imageXSee also
8 related
See also
8 relatedPlants you might compare or use together — scored by shared family, common use cases, and growing requirements.
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