I recently discovered all of my tomato plants have early blight ( i think).

I pulled off the leaves that are yellowing with brown spots. I mulched and I sprayed a baking soda solution (this same solution stopped my powdery mildew on my squash too)

Overall my plants look very healthy and producing tons.

My question is do I need to pull every sinle leaf that has a tiny bit of yellow or a tiny spot on it?

Thanks

Jen