Great Pignut
bunium bulbocastanum
Also known as: ["Earth almond","Hog's nut","Stinking nut"]
Overview
A perennial herbaceous plant native to Europe and Asia, known for its edible tuberous root.
Benefits & Perks
["edible fruits","culinary herb"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Apiales |
| Family: | Apiaceae |
| Genus: | Bunium |
| Botanical Name: | Bunium bulbocastanum |
Plant Characteristics
Basic Information
- Category: Herbs & Weeds
- Suitable Location: garden bed or container in a sunny spot
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"5–30°C"}
- Hardiness: {"zones":"4–9"}
- Misting: rarely required
- Drainage: Fast-draining to prevent waterlogging.
- Soil Type: Well-draining, sandy loam with some organic matter.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: moderate
- Pruning Frequency: As needed; typically after flowering or when foliage looks untidy.
- Pruning Intensity: Light; remove only dead, diseased, or damaged parts.
Care Details
Ideal Sunlight Coverage:
Full sun (6–8 hours/day) in cooler climates; partial shade in hot regions to prevent scorching.
Sunlight Tolerance Tips:
Acclimate gradually to intense sunlight; protect from harsh afternoon sun in hot climates; adjust placement based on seasonal light intensity.
Care Requirements
Care Difficulty
moderateeasy
Sunlight
full sun to partial shade
Rotate plant for even light exposure; use shade cloth in extreme heat; monitor for sunburn signs.
Watering
every 7–10 days during active growth, reduce in winter
Water thoroughly but infrequently; ensure soil dries between waterings; avoid overwatering, especially in winter.
Soil
well-drained, sandy loam with moderate fertility
pH: Slightly acidic to neutral (pH 6.0–7.0).
Ensure soil dries between waterings; amend with sand if too heavy; test pH periodically.
Temperature
Prefers cool to moderate temperatures (60–75°F/15–24°C); tolerates frost but thrives in cooler conditions.
Protect from extreme heat; ensure good air circulation; adjust watering for temperature changes.
Fertilizing
every 4–6 weeks during growing season
Fertilize sparingly; apply in spring before active growth; use a balanced formula.
Propagation
Methods
Seed or root division; seeds are the most common method for home growers.
Step-by-Step Propagation Guide
- Prepare medium.
- Sow seeds or divide roots.
- Keep moist.
- Provide warmth.
- Transplant when established.
Best Time: Early spring for seeds; late summer for root division after flowering.
Environment
Warm (65–70°F/18–21°C), bright indirect light, and consistent moisture for seeds; similar conditions for root division.
Medium
Well-draining seed starting mix or sandy loam for root division.
Hormone
Not typically required for seeds; optional for root division to encourage faster rooting.
Timeline
Seeds: 2–4 weeks for germination; root division: roots establish in 4–6 weeks.
Tools Needed
Seed trays, pots, sharp knife or pruners, rooting hormone (optional), labels.
Quick Tips
Sow seeds shallowly; keep soil consistently moist; divide roots when clumps become crowded.
Pruning & Repotting
Pruning Guide
Method
Snip off unwanted growth with clean cuts; avoid cutting into healthy stems.
Pruning Plan
Minimal pruning needed; focus on removing dead or damaged foliage to maintain plant health.
Tools
Pruning shears, scissors, or sharp knife.
Checklist
Sanitize tools; remove dead/damaged parts; make clean cuts; dispose of clippings.
Repotting Guide
Best Season
Early spring before new growth begins.
Pot Size
One size larger pot; ensure good drainage holes.
Method
Gently remove plant; trim roots if necessary; place in new pot with fresh soil; water lightly.
Suggestions
Repot only when the plant becomes root-bound or outgrows its container; not frequently needed.
Checklist
Choose appropriate pot; prepare fresh soil; handle roots carefully; water after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture; water deeply; ensure drainage; adjust for season.
How to Apply Water Properly
Water at the base of the plant, ensuring moisture reaches the root zone; allow excess water to drain away; water in the morning to reduce evaporation and fungal risk.
Watering Schedule Tips
Water deeply once the top inch of soil feels dry; reduce frequency in winter to prevent root rot.
Soil Improvement
Add sand or perlite for drainage; incorporate compost for fertility; ensure good aeration.
Temperature Stress Management
Signs of Temperature Issues
Wilting, yellowing leaves, stunted growth, or browning leaf edges in extreme heat or cold.
Cold Stress
Slows growth, may cause leaf discoloration, but generally hardy to frost.
Solution: Provide frost protection in severe cold; ensure good air circulation to prevent mold.
Hot Stress
Leaves may wilt, scorch, or drop; growth may slow in excessive heat.
Solution: Provide shade during peak heat; increase humidity; water more frequently but avoid waterlogging.
Fertilizing Guide
Fertilizing Checklist
Choose balanced fertilizer; apply in spring; follow dilution instructions; avoid late-season feeding.
Fertilizing Method
Use a balanced, slow-release fertilizer in early spring; avoid over-fertilizing, especially in late summer or fall.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicBunium bulbocastanum is not considered toxic to cats. The plant does not pose a significant risk to felines when ingested in normal amounts. However, excessive intake may cause mild digestive disturbances.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
Non-toxicBunium bulbocastanum is not considered toxic to dogs. The plant is not known to cause adverse effects in canines when ingested in typical amounts. However, as with any plant, overconsumption may lead to mild gastrointestinal upset.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
Non-toxicBunium bulbocastanum, commonly known as groundnut or cobra nut, is generally considered non-toxic. However, excessive consumption of its seeds or roots may lead to mild gastrointestinal discomfort due to the presence of certain compounds. The plant is not known to cause severe toxicity in humans.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten in large quantities
Frequently Asked Questions
Q: Is Bunium bulbocastanum safe for human consumption?
A: The tuberous root is edible and has been used as a food source, but caution is advised as it may be confused with toxic look-alikes.
Q: How does Bunium bulbocastanum grow?
A: It prefers well-drained soil and partial shade, growing to about 60 cm in height.
Q: What are the culinary uses of Bunium bulbocastanum?
A: The root can be roasted or boiled and has a nutty flavor, often used in traditional dishes.
Quick Reference
| Family: | Apiaceae |
| Care: | moderate |
| Light: | full sun to partial shade |
| Water: | every 7–10 days during activ |
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