Golden Medallion Tree not thriving, help!
I live in Riverside County, CA. It is dry and hot. I water the tree regularly and it dies back every end of Summer. I have had it 4 years. It is no taller than when I planted it. I pruned suckers the first 3 years then this year did not. The suckers/side branchings off the main trunk grew in one season as tall as the tree itself but the tree is no taller. About 10 feet tall. It blossomed this year, about 6 flowers. Then slowly it began dying from the tips of the branches back. There are yellow butterflies that visit this tree regularly. Could they be carrying a pest or fungus? I wanted a 20 foot beauty an have a gangly, deadish eyesore. Any ideas anyone?