Antler Reishi Sterile Bulk Substrate
Ganoderma multipileum
Quantity
What's in the bag
5lb Sterile Substrate
0.2μm Filter Patch
Instruction Card
Viable culture guaranteed. If it arrives damaged, dead, or visibly contaminated, contact us within 48 hours with photos and we'll arrange a replacement or refund.
Substrate Specs
Bag Size
5 lb — sterile hardwood substrate
Colonization
3–4 weeks once inoculated
Sterilization
Autoclaved 15 PSI / 120 min — verified per batch with biological indicators + temp/pressure logging
Moisture
~60% — hydrated and ready for spawn
Recommended Inoculation
1 lb colonized grain spawn per 5 lb bag (spawn sold separately)
Shelf Life
2–3 months, stored cool and dark
Sterile, autoclaved hardwood substrate for growers who already have colonized grain spawn on hand — no injection port here, just open and mix. This one grows Ganoderma multipileum, a distinct species within the Ganoderma lucidum complex naturally inclined toward antler formation. Colonization runs 3–4 weeks like standard Reishi; the difference is entirely in fruiting, where you limit fresh air exchange to grow dramatic antler-shaped bodies instead of a normal cap.
Every bag is sterilized at 15 PSI and batch-tested with biological indicators before it ships. The most technically demanding bulk substrate we sell — advanced growers only.
Don't have grain spawn yet? Pair this with one of our Grain Bags and an Antler Reishi Liquid Culture syringe.
Each bag: 5lb sterile hardwood substrate · 0.2-micron filter patch · shrooms instruction card. Store cool and dark until use.