Rocky Top Oyster Grain Spawn – 1kg

Rocky Top Oyster Grain Spawn – 1kg

Price range: £15.00 through £18.00

Fast-colonising Rocky Top Oyster grain spawn, selected for vigorous growth, strong yields and beautiful, meaty oyster clusters.

Choose your grain: Organic Rye or Sorghum.

About Rocky Top Oyster

Rocky Top Oyster is a vigorous oyster strain selected for fast colonisation, reliable performance and generous clusters of classic oyster mushrooms. Our 1kg grain spawn is fully colonised and ready to use, with a choice of Organic Rye or Sorghum.

Developed by Mossy Creek Mushrooms, Rocky Top is a vigorous Blue Oyster strain selected for strong yields, excellent fruit quality and dependable performance — making it a superb choice for both home and small-scale commercial growers.

Key Features

  • Fast colonisation – vigorous, reliable growth
  • Deep blue pinset – developing into brown caps with distinctive dark-blue edges
  • Meaty, tender stems – improved usable yield compared with harder-stemmed blue oysters
  • Strong commercial performer – selected with production growers in mind
  • High-yielding – capable of producing substantial clusters

Choose Your Grain

Organic Rye
Our premium grain option. Organic rye offers excellent moisture retention and nutrient availability, providing plenty of inoculation points for fast, vigorous colonisation.

Sorghum
A clean, reliable grain option. Its smaller kernels provide excellent distribution through bulk substrate and plenty of inoculation points for even colonisation.

Product Details

  • Species: Oyster mushroom  (Pleurotus hybrid)
  • Strain: Rocky Top (BS8)
  • Parent genetics: Lambert’s 123 x North Spore’s Snow Oyster
  • Weight: 1kg
  • Grain Options: Organic Rye or Sorghum
  • Supplied: Fully colonised and ready to use
  • Suitable for: Straw, hardwood sawdust, supplemented substrates

Ideal For

  • Home growers and beginners
  • Small-scale and commercial mushroom growers
  • Growers seeking high-yield oyster strains
  • Indoor and controlled growing environments

Why Twisted Stem Spawn?

Our grain spawn is produced in small batches under carefully controlled sterile conditions. Each batch is grown and checked by us before it leaves Twisted Stem, giving you clean, vigorous mycelium that’s ready to get to work.

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