Freeman maple tree with chlorosis

to find a solution for use in Toronto. Suggested treatment is for application of iron chelate but Sheridan Nurseries does not carry any and doesnèt know of any sources. Need a source of iron chelate or another product that could…

Yellowing of leaves on a climbing hydrangea

I have two climbing hydrangeas on the north wall of my Toronto house, one on either side of a window. The dry soil conditions adjacent to the house apply to both. The one on the east, planted probably 30 years…

Peegee Hydrangea*

The leaves have suddenly turned yellow with the veins remaining green. Zone 5b full sun. Dry. Loam…

Pagoda Dogwood*

I planted a young Cornus alternifolia this spring. It is about 2 feet tall, planted in sandy soil which I amended with composted manure and some peat moss at planting time, this spring. The root zone is covered with cedar…