I didn’t know you could sell a plague.
Remember, the leaves may be browning, but it’s still not too late to get perennials in the ground to overwinter.
Gathering information about what plants live where, and when they go through life stages such as budbreak, will over the long term provide a richer vision of climate change than the simple concept of changing temperatures that most people think of.
Nearby lavender plants, and a chrysanthemum, also appear to be dead. My guess is that they suffered from some of the cold weather we had without insulating snow this winter, but I can’t really be sure. It could be disease, but the multi-species death leads me to think not.
Deer tend to get the blame for eating plants like this, but I’m more inclined to blame the rabbits, woodchucks, or the squirrels – something with an eye close to the ground, and a brain that can’t remember that it’s the autumn crocus that has flavorful saffron for a pollen.