Peg spawn is an easy way to bring Wine Cap (Stropharia rugoso-annulata) into your garden. Spread a 6" layer of hardwood chips on top of the soil and press in a peg, and you'll have mushrooms by the end of the summer! 1 peg plants 1 sq. ft. area. Peg spawn stores for up to six months when refrigerated. Instructions included. Available each spring, while supplies last.