How to Grow Lion's Mane Mushrooms (Hericium erinaceus)

By Michael Torres
2/20/2024

Required Supplies
Lion's Mane spawn
Qty: 3 lbs
$20-30
Hardwood sawdust
Qty: 10 lbs
$10-15
Wheat bran
Qty: 2 lbs
$5-10
Grow bags with filter patch
Qty: 5-10
$10-15
Pressure cooker
$50-150
Prerequisites
Before starting this guide, make sure you have:
- Experience with at least one successful grow
- Understanding of sterile technique
- Pressure sterilization capability
What You'll Learn
About Lion’s Mane Mushrooms
Lion’s Mane (Hericium erinaceus) is a unique medicinal and gourmet mushroom known for its distinctive appearance and cognitive benefits. Unlike typical mushrooms with caps and stems, Lion’s Mane forms cascading white icicle-like spines that resemble a lion’s mane.
Key Characteristics
- Appearance: White, shaggy, icicle-like teeth
- Flavor: Seafood-like, often compared to crab or lobster
- Medicinal properties: Cognitive enhancement, nerve regeneration
- Difficulty: Intermediate due to specific requirements
Optimal Growing Conditions
Temperature Requirements
Colonization Phase:
- Optimal: 70-75°F (21-24°C)
- Range: 65-80°F (18-27°C)
- Duration: 2-3 weeks
Fruiting Phase:
- Optimal: 65-70°F (18-21°C)
- Range: 60-75°F (15-24°C)
- Duration: 1-2 weeks
Humidity Requirements
- Colonization: 60-70% (inside bags)
- Pinning: 90-95%
- Fruiting: 85-90%
- Critical: Maintain high humidity without direct water contact
Fresh Air Exchange
Lion’s Mane requires significant fresh air:
- CO2 levels below 800 ppm
- 4-8 air exchanges per hour during fruiting
- Poor FAE results in coral-like malformed growth
Light Requirements
- Colonization: Complete darkness
- Fruiting: 200-500 lux for 12 hours daily
- Natural indirect light or LED works well
Substrate Preparation
Master Mix Recipe
Ingredients (for 10 lbs dry):
- 40% hardwood sawdust (oak, beech, maple)
- 40% hardwood chips (small)
- 18% wheat bran
- 2% gypsum
Hydration:
- Add water to 60-65% moisture content
- Test: Squeeze handful - few drops should emerge
Preparation Steps
- Mix dry ingredients thoroughly
- Add water gradually while mixing
- Load grow bags with 5-6 lbs wet substrate
- Fold and seal bags properly
- Sterilize at 15 PSI for 2.5 hours
- Cool completely before inoculation
Inoculation Process
Spawn Rate
- Use 10-15% spawn ratio
- Higher rates = faster colonization
- 0.5-0.75 lbs spawn per 5 lb bag
Inoculation Steps
- Prepare workspace with sterile technique
- Flame sterilize bag opening
- Add spawn quickly
- Seal immediately
- Mix thoroughly through bag
- Label with date and strain
Colonization Phase
Optimal Conditions
- Temperature: 70-75°F constant
- No light needed
- Check weekly for contamination
- Full colonization: 14-21 days
Signs of Healthy Colonization
- White, dense mycelium
- Sweet, mushroom smell
- No off colors or odors
- Bag becomes firm
Fruiting Phase
Initiation
- Move to fruiting chamber when fully colonized
- Cut X-shaped slits 4 inches wide
- Multiple fruiting sites - 2-3 per bag
- Maintain humidity immediately
Fruiting Chamber Setup
Simple Setup:
- Clear storage tote
- Perlite base (4 inches)
- Wire rack above perlite
- Mist walls 3-4 times daily
Advanced Setup:
- Automated humidity control
- Timed fresh air exchange
- Temperature control
Development Stages
Day 1-3: Pinning
- Small white bumps appear
- Keep humidity at 95%
- Minimal air exchange
Day 4-7: Early Development
- Teeth begin forming
- Increase air exchange
- Maintain 85-90% humidity
Day 8-14: Maturation
- Spines elongate
- Monitor for yellowing
- Prepare for harvest
Harvesting
When to Harvest
- Spines are 1/4 to 1/2 inch long
- Before yellowing occurs
- Typically 10-14 days from pinning
Harvesting Technique
- Cut at base with clean knife
- Remove all tissue from substrate
- Handle gently - bruises easily
- Process immediately or refrigerate
Yield Expectations
- First flush: 0.5-1 lb per 5 lb bag
- Second flush: 30-50% of first
- Total: 2-3 flushes possible
Second Flush
Rehydration Method
- Rest period: 7-10 days
- Mist heavily or dunk briefly
- Return to fruiting conditions
- Cut new holes if needed
Storage and Preservation
Fresh Storage
- Refrigerate in paper bags
- Use within 7-10 days
- Don’t wash until use
Drying
- Dehydrate at 135°F
- Store in airtight containers
- Retains medicinal properties
Freezing
- Sauté first for best texture
- Vacuum seal if possible
- Use within 6 months
Common Problems
Problem: Coral-like Growth
Cause: Insufficient fresh air Solution: Increase FAE, add more holes
Problem: Yellowing Mushrooms
Cause: Over-maturity or bacterial infection Solution: Harvest earlier, improve sanitation
Problem: No Fruiting
Cause: Temperature too high/low Solution: Adjust to 65-70°F range
Problem: Slow Growth
Cause: Low humidity Solution: Increase misting frequency
Troubleshooting Tips
Contamination Prevention
- Use only sterilized substrates
- Maintain clean environment
- Work with proper technique
- Monitor temperature closely
Optimization Strategies
- Experiment with substrate recipes
- Try different wood types
- Adjust spawn rates
- Fine-tune humidity levels
Commercial Considerations
Market Value
- Fresh: $15-25 per pound
- Dried: $40-60 per pound
- Extract products: Premium pricing
Scaling Up
- Automated systems recommended
- Climate-controlled rooms
- Consistent substrate sources
- Regular testing for quality
Medicinal Benefits
Active Compounds
- Hericenones: Nerve growth factor
- Erinacines: Cross blood-brain barrier
- Beta-glucans: Immune support
- Antioxidants: Cellular protection
Reported Benefits
- Cognitive enhancement
- Memory improvement
- Nerve regeneration
- Immune system support
- Digestive health
Recipe Ideas
Simple Preparations
- Sautéed with garlic and butter
- Grilled “steaks”
- Soup additions
- Tea or tinctures
Remember: Lion’s Mane requires patience and attention to detail, but the unique appearance and benefits make it rewarding to grow. Start with one bag to learn the process before scaling up.

Written by Michael Torres
Mushroom cultivation expert