Garden Pests and Diseases: Birds' Nest fern needs help, please!, 1 by tucsonjill

tucsonjill wrote:
I posted this question over in the ferns and fungi forum, and they suggested I try here. Sorry to any who read the multiple post!

I have a very sad-looking bird's nest fern (I lost the tag, but I believe it's Asplenium nidus). The leaves are developing these brown spots on them, and I have no idea why! It's in a pot in full shade, and I do my best to water underneath its leaves, to prevent splash-up. It does have good drainage. I haven't seen any bugs on it or its soil except mosquitoes, and I control those using Mosquito Bits (the same bT as in Mosquito Dunks, only in a granular form; we do get soil-dwelling mosquitos here.)

Does anyone have any advice on how to fix this? It's getting worse...
Thanks in advance!