I first noticed this on Rollercoaster Rush, which has been renamed Rollercoaster Rust. Then I see it on Zephyr's Song and that was my favorite, the only one with teeth, then Grandma's smile. I was careful not to plant rust prone daylilies but I had no clue that these were susceptible.
-Zephyr's Song
-Rollercoaster Rust
-Rollercoaster Rust