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THE HASSLE-FREE, READY-TO-SPAWN SOLUTION FOR GROWING BLUE OYSTER AT HOME

Blue Oyster mushrooms have been used in Eastern cultures for generations and were historically cultivated in parts of Japan as a staple food. Today, they are valued for their mild, earthy flavour, delicate texture and potential nutritional benefits.

Modern research is exploring Blue Oyster mushrooms for their naturally occurring compounds, including polysaccharides and antioxidants. They are also of interest for their naturally occurring lovastatin content, which is being studied in relation to cholesterol and cardiovascular health.

In the kitchen, Blue Oyster mushrooms are extremely versatile. Their tender, slightly meaty texture makes them ideal for pasta dishes, stir-fries, risottos and soups, and they are a popular alternative to traditional protein sources.

Growing your own Blue Oyster mushrooms at home is simple with this Blue Oyster Mushroom Grain Spawn, produced by our trusted partners at Martian Mushrooms. Suitable for both beginners and experienced growers, this spawn is designed to make cultivation straightforward and reliable.

The grain spawn arrives pre-colonised and ready to mix with your chosen substrate — no inoculation or waiting for grain to colonise. With the right conditions, you can expect thick, dense clusters of Blue Oyster mushrooms, ready to cook, dry or extract.

THE BENEFITS

🍄 Lab-tested, high-quality living grain spawn for inoculating substrates
🌱 Compatible with a wide range of substrates and growing methods
🧬 Specially selected strains optimised for yield, nutrient density and flavour
🗓️ Harvest mushrooms in as little as 3 weeks
🛡️ Backed by Martian Mushrooms’ guarantee – produces mushrooms or the spawn will be replaced
💷 Save money by growing your own mushrooms at home
🏡 Requires little space and is discreet with minimal odour
🧠 Blue Oyster mushrooms contain bioactive compounds such as beta-glucans

HOW TO USE

Inoculation
Mix the grain spawn with your substrate at roughly a 6:1 ratio, depending on substrate type. Hardwood or Masters Mix (hardwood + soy hulls) is recommended.

Side Fruiting
Cut a small “X” or slit in the side of the bag to allow mushrooms to grow from the block. Mist the cut area at least twice daily.

Fruiting Environment
For best results, place the block in a fruiting chamber such as a MonoTub or Martha tent to help maintain ideal humidity and airflow.

A step-by-step online growing guide is available to help support successful results.

GROWING CONDITIONS

Substrate: Hardwood or 50/50 hardwood & soy hulls (Masters Mix), hydrated to ~60%

Temperature

• Colonisation: ~25°C (77°F)

• Fruiting: 15–20°C (59–68°F)

Humidity: Over 80%

Light

• Colonisation: Dark

• Fruiting: Indirect or ambient light

Fresh Air Exchange: Regular ventilation required

Cleanliness: Maintain a clean environment to reduce contamination

INGREDIENTS

This spawn is produced by Martian Mushrooms using high-quality grain and carefully controlled sterile processes to encourage fast colonisation and consistent performance.

WHAT’S INCLUDED

1.5kg Blue Oyster Mushroom Grain Spawn Bag

STORAGE

Use as soon as possible after delivery. If not using immediately, store in a refrigerator. When refrigerated, spawn should remain viable for up to 3 months.

IMPORTANT DISCLAIMER

This product is manufactured and supplied by Martian Mushrooms and sold by us as an authorised retail partner. All product specifications, performance claims and guarantees are provided by Martian Mushrooms. We do not manufacture this product ourselves. Any guarantees are fulfilled by Martian Mushrooms in accordance with their terms.