Q.Washington Hawthorne tree
My Hawthorne p,anted last spring was doing very well till two days ago with new leaves. Suddenly all the leaves dries up & the bark is still green when scraped. Checked u dear leaves for insects but found nothing. Can you please help? Thank you.
Check the soil moisture level. Since the tree is a new planting, ( in the first year) you will need to water during dry spells.
They also can be susceptible to some disease.
This article will help you pinpoint the issue.
https://www.gardeningknowhow.com/ornamental/trees/hawthorn/growing-hawthorn-trees.htm