help please - yellow leaves to dead
I planted a potted 24" tree (It's in the ground about 4 feet from a west-facing wall and receives direct sunlight from about 11am, on) three weeks ago, and now the leaves are turning yellow and dying. What should I do?
Initially, I thought that the yellowing was due to overwatering. then, I thought it was hot weather that turned the leaves yellow, but I am not sure. About a week ago, we had a few hot, dry days (low 90's). I watered the leaves lightly once a day thinking it would help. However, the leaves began to turn yellow, and after a moderate watering yesterday, several turned to brown and began to get a bit crispy. I had checked the moisture of the soil by hand, and it seemed just barely moist.
To top things off, I am also wondering whether I need to fertilize the tree.
Any ideas/suggestions will be greatly appreciated.