rusty looking ferns because of too much sun?
An emplouyer was pulling out ferns to toss 3 years ago in a heavily wooded area and gave me a bunch. I planted them against the foundation on the east side of the house they have spread to a nice patch. They get no shade until afternoon. The ones against the foundation get "rusty" or brown as some here say.
Some I put in a much more shaded spot and still they get rusty too.
Vangy likes to play in the dirt