"The promise is simple: pop a coin in the compost and let chemistry do the work. Supposedly, the copper acts as a mini-fertiliser and a mild fungicide."
"Months later, the penny pots looked exactly the same, except for a greenish coin. Any change in the plants came from light, water and photosynthesis, not the loose change."
"A penny in the pot won't hurt, but it won't feed your plant either. Modern pennies are barely copper at all, and even old ones corrode far too slowly to act as a useful feed."
Placing a penny in a plant pot is a common belief that copper can enhance plant growth and prevent fungi. The method involves pressing pennies into the soil and watering as usual. However, a test showed no difference in plant health between pots with pennies and those with standard feeding. Modern pennies contain minimal copper, and even older ones corrode too slowly to be effective. Using proper fertilizers is recommended for better plant care instead of relying on coins.
Read at www.theguardian.com
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