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Originally Posted by pk
Did you know that Ozone can cause damage on our milkweed plants? The picture shows what ozone can do to a milkweed leaf.
Ozone injury is always found on the upper leaf surface. It is between the veins not across the veins. It is black in color and has sharp edges. You will see it more on older and middle age leaves.
visit the website on this here: http://www.dnr.state.wi.us/org/caer/.../01HealthyLeaf |
Very interesting. I have seen what you have pictured, but I didn't know that is what it was. Thanks for the info.
Carol
