Help me revive my Orchid Tree
I have a Bauhinia Variegata (Orchid Tree) that just looks like it is dying. It was beautiful in winter with tons of continuous blooms. Now it looks like it is balding from the top down and the leaves are yellowing and falling off. I do not know if I am overwatering it or underwatering it.
The irrigation timer is broken, so I am watering manually every 4 or 5 days. What i do every 4 or 5 days is put the hose on a shower setting and angle it so that it sprays gently around continuously on a single swath under the drip edge of the tree for 30 minutes. I then move the hose so that it is angled on a different swath of the drip edge and spray continuously again for 30 minutes. At the end of that round of spraying, I move the hose one last time and repeat the cycle for a total of 1.5 hours of spraying around the entire base of the tree every 4 or 5 days.
Am I overwatering? Should I mix in fertilizer into the spray? Please help me. My wife will kill me if I kill this tree.