Transplanted butternut squash seem to be doing fine in the great outdoors. The row cover will protect them from the fairly cucumber beetles, until they’re big enough not to be bothered. The beetles eat the plants and can also pass on bacterial wilt (I’ve experienced hungry cucumber beetles, but luckily so far, no wilt). This rock cover is medium weight, thick enough that it’s easy to handle without tearing and can be reused, and thin enough that it lets 85% of the sunlight through. A small tradeoff for no chemicals!