Asked June 29, 2020, 3:24 PM EDT

Hi there, I have a river birch and a pin oak that have chlorosis. (leaves are yellowing and veins are green.) My yard is heavy compact clay and the soil is acidic. How can I treat this with sulfur and Iron? What kind of iron do i need? how do I apply the two products? Thanks, Tom 612-804-4720

Hennepin County Minnesota

1 Response

The first thing you need to do is have a soil test. Make sure to note on there that you have trees with chlorosis. You may want to aerate your lawn to help deal with the compaction. Here is a link to a good publication from Wisconsin Hort on chlorosis and how to deal with it.