Spiral grooved dowels specially manufactured from kiln dried FSC certified birch wood. Supplied un-inoculated, or blank, these dowels are perfect for creating high quality mushroom plug spawn.
Mushroom mycelium grows in circles; the mycelium colonises the spiral groove which inturn protects it from the shock of inoculation allowing it to recover much quicker when compared to standard straight dowels.
The dowels are soaked in water for 3 days then sterilised at 121 deg.C. for 1.5 hours. Unlike straight dowels they do not swell or change size after soaking and sterilisation, so an 8mm hole can be drilled making an exact and secure fit.