Product Details ・14 blocks of used mushroom substrate made from 100% domestic Japanese oak (kunugi), suitable for shiitake mushroom cultivation. ・Can be used for making insect breeding mats. ・Suitable for reuse experiments and substrate research. Features ・Safe and reliable, made from 100% natural Japanese oak. ・Easy to handle in block form, and effective for soil improvement when mixed into the soil. Product Details ・The blocks are completely dry and easily crushed when soaked in water. ・Used mushroom substrate blocks made from 100% domestic Japanese oak, suitable for wood ear mushroom cultivation. ・These blocks have already been used for mushroom cultivation, and while wood ear mushroom production has ended, the mycelium is still present inside. ・Can be used for ornamental purposes, reuse in home gardens, composting, gardening, etc. --- Size and Quantity ・Height: Approximately 13cm ・Diameter: Approximately 20cm ・Quantity: Set of 14 --- Important Notes ・Shiitake mushroom production is not guaranteed due to the used substrate. ・Variations in shape and color may occur due to the use of natural materials. ・Will be shipped in simple packaging, wrapped in newspaper. ---- [Shipping Information] ・Will be shipped in a cardboard box, protected with newspaper. ・Shipping via Rakuraku Mercari Bin / Yuuyu Mercari Bin is planned.