bark splitting

Hi all, I have a 5 year old weeping Fuji cherry tree that might be in some trouble. My dad's ashes were planted under the tree, so really really hoping to save it. The bark has peeled away almost around the circumference just above the graft. With hindsight, it's probably planted in an area...

We have a Japanese Maple tree that has had several dead limbs over the past few years and bark separating. When cutting off a dead limb, we realized it is infested with large black ants. We then called the pest control and he put out some ant poison (which is the yellowish granular substance you...