Pennies—Good for Thoughts, but Not Tomato Blight

Tomatoes - cherry Sunsweet @home LAH-001I recently ran across an article claiming that a penny can help your tomato plants fight off blight. Apparently, the reasoning goes like this:

  • Copper is known to kill molds, algae, fungi, and microbes.
  • Pennies are made out of copper.
  • Therefore, inserting a penny into a tomato stem (or burying it at the roots) will keep your plant from succumbing to diseases caused by molds, algae, fungi, or microbes.

Since I’ve lost tomato plants to Early Blight, a common problem in Colorado, I’d love for this idea to work. I have some pennies lying around; let’s put them to good use, right?

Well, not really.

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