Bubonion

opopanax chironium

Also known as: ["Bubonion","Chiron's Parsley"]

Family: Apiaceae Genus: Opopanax Category: Herbs & Weeds

Overview

A herbaceous plant historically used in traditional medicine and perfumery, though its exact identity and modern uses remain debated.

Benefits & Perks

["medicinal use","fragrant flowers","rare/collector’s item"]

Botanical Classification

Phylum: Magnoliophyta
Class: Magnoliopsida
Order: Apiales
Family: Apiaceae
Genus: Opopanax
Botanical Name: Opopanax chironium

Plant Characteristics

Basic Information
  • Category: Herbs & Weeds
  • Suitable Location: rock garden or sunny border in temperate climates
  • Suitable For:
    Collectors & Enthusiasts Historical Gardeners
  • Is Weed: No
  • Allergenicity: unknown
Environmental Needs
  • Climate: {"temperatureRange":"10–30°C"}
  • Hardiness: {"zones":"8–10"}
  • Misting: rarely required, only if ambient humidity is very low
  • Drainage: Fast-draining to prevent waterlogging.
  • Soil Type: Well-draining mix of cactus soil, perlite, and a small amount of compost.
Maintenance Level
  • Maintenance Level: unknown
  • Toughness Level: unknown
  • Pruning Frequency: Light pruning every 2–3 months; major pruning in early spring.
  • Pruning Intensity: Moderate; remove up to one-third of growth if overgrown.
Care Details

Ideal Sunlight Coverage:
Bright indirect light for 6–8 hours daily; adjust to morning sun in winter and dappled shade in summer.

Sunlight Tolerance Tips:
Acclimate gradually to direct sun; protect from intense midday sun; place in filtered light indoors.

Warning Signs: Yellowing leaves, root rot, or stunted growth indicate poor soil or drainage issues.

Care Requirements

Care Difficulty
unknown

moderate

Sunlight

full sun to partial shade

Rotate plant weekly; use sheer curtains for protection; avoid south-facing windows in summer.

Watering

every 7–10 days during active growth, reduce in winter

Water deeply but infrequently; ensure soil dries between waterings; avoid overwatering.

Soil

well-draining, sandy loam with some organic matter

pH: Slightly acidic to neutral (pH 6.0–7.0).

Ensure pots have drainage holes; avoid heavy clay soils; topdress with compost annually.

Temperature

Prefers 65–75°F (18–24°C); tolerates 50–85°F (10–29°C); cooler temperatures in winter promote dormancy.

Avoid sudden temperature changes; protect from drafts; maintain consistent indoor temperatures.

Fertilizing

every 4–6 weeks during growing season

Fertilize after watering; avoid direct contact with roots; flush soil occasionally to prevent buildup.

Propagation

Methods

Stem cuttings in spring–summer; division of root clumps is also effective.

Step-by-Step Propagation Guide
  1. Take 4–6 inch cuttings.
  2. Remove lower leaves.
  3. Dip in hormone.
  4. Plant in medium.
  5. Keep moist and warm.

Best Time: Spring or early summer when growth is active.

Environment

High humidity (70–80%), warm temperatures (70–75°F), and indirect light.

Medium

Well-draining mix of peat, perlite, and sand; or cactus mix with added rooting hormone.

Hormone

Recommended to speed up root development.

Timeline

Roots develop in 3–6 weeks; new growth appears in 2–3 months.

Tools Needed

Pruning shears, rooting hormone, small pots, misting spray bottle.

Quick Tips

Use healthy parent stems; maintain consistent moisture; provide bottom heat for faster rooting.

Pruning & Repotting

Pruning Guide
Method

Pinch back tips; cut just above a leaf node; thin out crowded stems.

Pruning Plan

Remove dead or leggy growth to encourage bushier form; shape as needed for aesthetic or health.

Tools

Clean, sharp pruning shears, sterilizing solution.

Checklist

Sterilize tools; prune dead/damaged growth; shape plant; clean up debris.

Repotting Guide
Best Season

Early spring before active growth begins.

Pot Size

Increase pot size by 1–2 inches in diameter; ensure drainage holes.

Method

Remove plant gently; trim roots if needed; place in new pot with fresh soil; water lightly.

Suggestions

Repot every 2–3 years or when roots fill the pot; necessary to refresh soil and provide space.

Checklist

Check root bound status; prepare new pot; trim roots; add fresh soil; water lightly.

Advanced Care Tips

Watering Mastery
Watering Checklist

Check soil moisture; water thoroughly; ensure drainage; adjust for season.

How to Apply Water Properly

Water directly at the root zone until water drains from the bottom; ensure even moisture without waterlogging; water in the morning to reduce evaporation.

Pro Tip: Use room temperature water to avoid shocking the roots.
Watering Schedule Tips

Water thoroughly when the top 1–2 inches of soil are dry; reduce frequency in winter to prevent root rot.

Soil Improvement

Add perlite or coarse sand for drainage; incorporate organic matter for fertility; use raised beds for outdoor plants.

Temperature Stress Management
Signs of Temperature Issues

Wilting, leaf drop, or stunted growth in extreme heat; yellowing or browning leaves in cold stress.

Cold Stress

Slows growth, causes leaf discoloration, and may lead to root damage if temperatures drop below 50°F (10°C).

Solution: Move to a warmer location; insulate pots; avoid cold drafts; reduce watering in winter.

Hot Stress

Leaves may scorch, wilt, or drop; growth may cease in temperatures above 85°F (29°C).

Solution: Provide shade; increase humidity; water more frequently; use reflective mulch.

Fertilizing Guide
Fertilizing Checklist

Check season; dilute fertilizer; apply to moist soil; rinse between feedings.

Fertilizing Method

Use balanced liquid fertilizer diluted to half strength every 4–6 weeks during growing season (spring–summer); cease in fall–winter.

Common Problems & Solutions

Yellow leaves in Opopanax chironium may indicate nutrient deficiencies, overwatering, or pest infestations such as mealybugs, which disrupt nutrient uptake and photosynthesis.

Wilting in Opopanax chironium can be caused by water stress, either due to overwatering leading to root rot or underwatering causing dehydration, both of which impair the plant's ability to transport water and nutrients.

Leaf spots on Opopanax chironium may be caused by fungal or bacterial infections, often exacerbated by high humidity or poor air circulation, leading to defoliation and reduced photosynthetic efficiency.

Rotting, particularly root rot, can occur in Opopanax chironium if the soil is excessively moist, leading to the decay of roots and lower stems, which can ultimately cause plant death.

Toxicity Warning

Cats
Toxic

Cats are highly sensitive to the toxic compounds in Opopanax chironium. Ingestion of the roots or resin can result in severe gastrointestinal and neurological symptoms, requiring prompt veterinary intervention.

⚠️ Symptoms:
vomiting diarrhea lethargy tremors difficulty breathing
🌿 Toxic Parts:
roots resin
⚡ Toxic If:

if eaten

Ensure cats cannot access this plant. If ingestion occurs, seek veterinary care without delay.
Dogs
Toxic

In dogs, ingestion of Opopanax chironium can lead to severe gastrointestinal upset and potential neurological symptoms. The toxic compounds in the roots and resin are harmful to canine physiology, causing discomfort and distress.

⚠️ Symptoms:
vomiting diarrhea lethargy loss of appetite tremors
🌿 Toxic Parts:
roots resin
⚡ Toxic If:

if eaten

Keep plants out of reach of dogs. Contact a veterinarian immediately if ingestion is suspected.
Humans
Toxic

Opopanax chironium contains toxic compounds that can cause significant physiological distress upon ingestion. The plant's roots and resin are particularly hazardous, leading to gastrointestinal and neurological effects due to the presence of furanocoumarins and other bioactive compounds.

⚠️ Symptoms:
nausea vomiting diarrhea abdominal pain dizziness confusion
🌿 Toxic Parts:
roots resin
⚡ Toxic If:

if eaten

Avoid ingestion. Keep away from children and pets. Seek immediate medical attention if poisoning is suspected.
Important: Keep this plant out of reach of children and pets. If ingestion occurs, contact poison control or veterinary services immediately.

Frequently Asked Questions

Q: Is Opopanax chironium commonly cultivated today?

A: No, it is rare and not widely cultivated due to its uncertain identity and historical significance.

Q: What are the traditional uses of Opopanax chironium?

A: It was historically used in perfumery and traditional medicine, though its exact applications are unclear.

Q: Is Opopanax chironium toxic to pets?

A: Reliable information on its toxicity to pets is unavailable.

Quick Reference
Family: Apiaceae
Care: unknown
Light: full sun to partial shade
Water: every 7–10 days during activ
Suitable For: ["collectors/enthusiasts","historical gardeners"]
Get Expert Care Tips

Download the Plantious app for personalized care reminders and plant identification!

Google Play App Store
Share This Plant

Related Plants

Annual Seseli
View
Burdock Chervil
View
Meadow Quench
View
Spurges
View