Illinois Catbrier Plant Care
Smilax illinoensis Mangaly
Updated · Sources · How we source care data
Smilax illinoensis , the Illinois greenbrier, is a North American species of plants found only in the United States and Canada. It is native primarily to the Great Lakes Region with a few populations further south in Missouri and in the Ohio Valley.
Partial to full shade
At a glance
How do you care for Illinois Catbrier?
Illinois Catbrier grows best in partial to full shade.
What Is the Illinois Catbrier?
Illinois Catbrier (Smilax illinoensis) belongs to the Smilacaceae family within the Smilax genus. Illinois Catbrier is also known as Carrion Flower.
Illinois Catbrier displays a climbing vine growth habit, reaching up to tall with a spread of approximately . Illinois Catbrier produces small, inconspicuous flowers in clusters.
What Light Does the Illinois Catbrier Need?
Illinois Catbrier thrives in partial to full shade. Avoid placing Illinois Catbrier in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Partial to full shade
What Soil Mix Works Best for a Illinois Catbrier?
Rich, well-draining soil with plenty of organic matter. Good drainage is essential for Illinois Catbrier to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a Illinois Catbrier?
Repot every 2-3 years in spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Illinois Catbrier?
Illinois Catbrier can be propagated through seeds, division of rhizomes. Similar propagation techniques also apply to bristleleaf smilax plant care, which shares the same genus.
Is the Illinois Catbrier Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Illinois Catbrier, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Illinois Catbrier?
Illinois Catbrier is susceptible to spider mites, scale insects, aphids. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
Keep exploring plants
Illinois Catbrier is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Smilax genus — compare its care with other Smilax species on PlantoScan.
Smilax is part of the Smilacaceae plant family — browse all Smilacaceae genera and species.
Illinois Catbrier copes with lower light than most plants — browse the full list of low-light plants.
More Smilax Species
Other Smilax species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Smilax illinoensis Mangaly, family Smilacaceae (first published in Rhodora 70: 263 (1968)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Illinois Catbrier, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
Identify Plants Like the
Illinois Catbrier Instantly
Scan any plant with your phone camera and get instant ID, care tips, water and fertilizer reminders, and health checks — all in one app.
Free
to download
iOS & Android
platforms
Light & dark
mode
100,000+
species