https://www.gardenersedge.com/grow-plugs-bag-of-55/p/FP55
Grow-Plugs Soilless Seed-Starting Medium, Box of 55 Plugs
Peat-and-organic soilless propagation plugs deliver consistent moisture and faster rooting. Box of 55; fits float growing kits and automated transplant...
grow plugsseed startingmediumbox
https://gmushrooms.org/mushroom-grow-kits-mushroom-plugs/
Mushroom Grow Kits & Mushroom Plugs
mushroom grow kitsplugs