Blue Angels withering away
For several years our Blue Angel hosta flourished and grew pretty large then about 3 years ago we noticed they came back small. That year was a pretty cold and wet winter so we figured that was the problem but we've noticed that each year since they've come in smaller and smaller and are now at the point where they are about the size they were when we first bought them 10-15 years ago. They get filtered sunlight, are in decent soil but they are planted in close proximity to a Beech tree. I noticed that a couple of them had yellowed leaves - not from lack of water or fungus but like they were missing a nutrient. Soil tests come back fine. Any ideas?