Magnolia Scale and deep root fertilization

Hello. I would appreciate some advice. I live in Hamilton, Ontario. My Saucer Magnolia tree has scale and I’ve been reading lots online and had an arborist out for a look. He suggests two applications of insecticide, then dormant oil…

Saucer Magnolia

We live around High Park area in Toronto (Zone 5 is my guess) and planted this Saucer Magnolia at the end of May. We noticed that started to dent and dry out around the edges. It is also growing new…