Plenty of gardeners will admit that growing wine cap mushrooms was their gateway to an unexpected new obsession with mushroom cultivation. Considering how rewarding growing wine cap mushrooms can be, that’s really no surprise. For me it was a shiitake mushroom kit that piqued my interest in growing other mushrooms, like wine caps. With their bright red mushroom caps and creamy white stems, the mushrooms themselves are visually striking. They’re also among the easiest mushrooms to start in outdoor garden beds, along pathways, on layers of cardboard and straw, and via many other substrates.