Lime tree leaves yellowing from bottom up
I have a two year old lemon tree that lives in a pot and gets taken inside and outside depending on the Michigan weather. It's been growing wonderfully indoors this winter, but the last couple of days I've noticed the leaves turning yellow starting at the bottom with some of the leaves curling in.
This is a very resilient tree, as it has died and come back to life once before. I don't want to see it die again!! Please help!