Milkweed Leaves Low in Nutrients

Milkweed low on nutrients

Check out the purple discoloration between the veins on this leaf. A virus, bacteria, or a fungus could have caused this injury. But, look, it is spread evenly over the surface of the leaf.

Plant leaves low in certain essential elements may look discolored like this. You can tell that it's not ozone injury because it is the wrong color and very diffuse.

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