Had a mounted staghorn fern for close to three years now and dealt with crispy brown edges on the shield fronds pretty much the entire time. Kept assuming it was underwatering since staghorns get that reputation, so I kept soaking the mount more and more, which honestly made things worse because the sphagnum backing stayed soggy for days and started smelling a bit off.
Turns out my problem was airflow, not water. I had it hanging in a corner of the bathroom where I thought the humidity would help, but there was basically zero air movement back there. Moved it to a spot near a window where a small fan runs for a few hours a day, cut back watering to once every 10-12 days, and the new fronds coming in this fall are already noticeably greener with none of that crisping along the margins.
The other thing that helped was switching from soaking the whole mount to just misting the shield fronds and letting the water run down naturally. Less dramatic soaking, more consistent light moisture. The fertile fronds are finally starting to look less stressed and I'm seeing a new pup forming at the base which I haven't had happen before.
Anyone else find that staghorns get blamed for water problems when it's really a circulation issue? Curious what setups people are running for these, especially anyone mounting on cork versus wood since I'm debating remounting this one before winter.