Hi, I've talked about my ongoing problems with two arbutus seedlings here on a couple of occasions (post#1 & post#2) but I'm now facing something even more alarming & potentially deadly than I've ever encountered (or read of) before. A few weeks ago my smaller, traditionally-happier seedling started to wilt. Dramatically. Its leaves got brittle and eventually started turning a pale brown. I've tried more sun, less sun, (a little) more water, less water - and nothing's worked. And even the usual culprit (besides the invisible 'bad' fungi), i.e. a small colony of aphids, has all but disappeared so I can't blame them this time either. There's no way I'm over watering. Honestly. At most I'll water them once a week (mid-summer), but usually it's more like every 2-3 depending on how damp the soil is. I keep them under the eaves of my house so they get the light but not the persistent winter rain. They get morning & early afternoon sun and, if it's nice out, they get get pulled forward to bask in the sun all day long. And yes, I did repot the larger seedling last summer (see post#2) into soil with healthier fungi and better drainage - but I didn't touch the smaller seedling beyond adding some new soil to the top of its pot. My larger, traditionally-sad seedling is in a pot that's only 2ft from the other plant, it gets sun & water at the same time & in the same amounts - and yet it's happily putting out new leaves & buds at the moment, and is looking healthier than I've seen it since I first brought it home from the store. Can anyone look at the photos below and help me diagnose what's wrong?? I know that 'domesticated' arbutus is prone to early die-offs and disease (I've read all the studies & websites), but I'd like to do my best to rescue this little guy if I can. Please help me.