Every time it rains, clusters of gray tissue-thin fungi pop up in garden beds and walkways. They are so delicate, they vanish in a day or two. The scorching heat gave way to a week of downpours, and the yard is now peppered with strange mushrooms and happy weeds. The asparagus even got so bold as to send up new shoots, and the tomatoes are bursting at the seams. The summer squash aren’t too thrilled about all the moisture, but…