Venus Maidenhair ferns
I have several venus maidenhair ferns which (until last week) have done very well. They are in a "bog type" bed with ligularia, sweet flag, etc. They are in dappled shade under oak trees and kept consistently moist. We have recently had 100+ temperatures and the leaves on my MH ferns are all turning black. I'm assuming it's from the heat but maybe it's something else. Any ideas? How can I save them?