*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. Q • One of my arborvitae trees has a problem. It has developed a brown area near the top of the tree that seems to have expanded ...

Gardening columnist Don Kinzler answers questions about treating arborvitae winter damage and the best time to divide peonies. He also identifies the white-flowered trees currently in bloom around ...