Antler Reishi Grow Block | Ganoderma lucidum | Medicinal Mushroom Growing Kit

The Antler Reishi Grow Block allows you to grow one of the most distinctive forms of Reishi mushroom at home.

Antler Reishi is an upright-growing form of Ganoderma lucidum, or closely related Ganoderma species, characterised by long, branching fruiting bodies that resemble antlers or coral rather than the traditional flat, fan-shaped Reishi conk.

This unusual growth form is particularly popular with medicinal-mushroom growers and collectors because of its sculptural appearance and relatively low spore production.

What Makes Antler Reishi Different?

Traditional Reishi mushrooms usually develop broad, shelf-like caps known as conks.

Antler Reishi develops differently, producing slender, upright and branching structures.

This growth form is encouraged by:

Elevated carbon dioxide levels

Limited fresh-air exchange

Lower light conditions

Growing within a controlled bag environment

If fresh-air exchange is increased later in the growing process, the tips may begin expanding and developing into more conventional Reishi caps.

Low Spore Production

Because Antler Reishi generally does not develop a large, mature cap, it typically produces far fewer airborne spores than fully developed conk-form Reishi.

This can make it particularly appealing for indoor growers who want to cultivate Reishi while reducing heavy spore release.

Naturally Occurring Compounds

Reishi mushrooms naturally contain a range of compounds that have made them important in traditional herbal practices, including:

Beta-glucans and other polysaccharides

Triterpenoids, including ganoderic acids

Naturally occurring antioxidant compounds

Reishi has a long history of use in traditional herbal preparations, particularly in East Asian herbal traditions.

How Reishi Is Used

Reishi is tough and woody and is not generally eaten like conventional culinary mushrooms.

After harvesting and drying, it is commonly prepared as:

Long-simmered Reishi tea

Herbal decoctions

Tinctures

Dried mushroom powder

Its naturally bitter flavour is characteristic of Reishi mushrooms.

Growing Conditions

Antler development is encouraged by keeping the grow block in an environment with limited fresh-air exchange and elevated CO₂ levels.

The block can usually remain inside its growing bag while the antlers develop. Avoid introducing excessive fresh air if you want to maintain the characteristic antler shape.

Increasing fresh-air exchange may encourage the growing tips to flatten and begin producing traditional shelf-like Reishi fruiting bodies.

Growing Tips

Keep the grow block:

Away from direct sunlight

In a clean growing environment

At a stable temperature suitable for Reishi cultivation

Protected from drying out

With restricted fresh-air exchange when encouraging antler formation

Monitor the mushrooms as they develop and harvest once they reach the desired size and maturity.

Key Features

Mushroom: Antler Reishi
Scientific name: Ganoderma lucidum / related Ganoderma species
Product type: Mushroom grow block
Growth form: Upright, branching antlers
Primary use: Home mushroom cultivation
Culinary use: Not typically eaten fresh
Typical preparation after harvest: Tea, decoction, tincture or dried powder
Spore production: Generally much lower than mature conk-form Reishi

Please note: Reishi is traditionally used as a herbal mushroom. References to its historical or traditional use should not be interpreted as medical claims or as a substitute for professional medical advice.