Reishi Fruiting Block
Ganoderma lucidum
Quantity
What's in the box
5lb Colonized Block
Fruiting-Ready Filter Bag
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.
Cultivation Specs
Colonization Time
Pre-colonized — ready to fruit
Fruiting Temp
70–80°F / 21–27°C
Ideal Substrate
Supplemented hardwood sawdust (pre-colonized)
Expected Yield
1–2 flushes over 60–90+ days
Growing Method
Indoor
Key Benefits
400+ Bioactives
The most pharmacologically complex medicinal mushroom — ganoderic acids, beta-glucans, and immunomodulating proteins
Cortisol & Stress
Reduces salivary cortisol and regulates the HPA axis — clinical evidence for adaptogenic effects with consistent use
Immune & Anti-tumor
NK cell activation and Th1/Th2 immune balance confirmed in meta-analyses; adjunct use in oncology studied
Cardiovascular & Sleep
Ganoderic acids inhibit HMG-CoA reductase and ACE; adenosine receptor effects improve sleep quality (JAMA Oncology 2016)
Skip colonization entirely — this block is already fully colonized with our Ganoderma lucidum culture. Unlike our Oyster and Lion's Mane blocks, cutting it open won't give you mushrooms within a week — Reishi is not a fast grow. Expect a white, coral-like antler stage first, developing into the classic lacquered red-orange conk over 60–90+ days.
Supplemented hardwood sawdust, autoclave-sterilized and colonized in our lab. Fruit at 70–80°F with 85–90% humidity and steady fresh air exchange. Do not rush the harvest — ganoderic acid content builds as the cap fully hardens.
Expect 1–2 flushes total, spaced months apart. The fruiting body is too woody and bitter to eat — best processed as a dual-extract tincture once harvested.