Slug Necklace: A quick note on how much copper is in a penny

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Slug Necklace

By Bonehead
May 26, 2014

Pennies glued to a cardboard collar, to deter both slugs and weeds.

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Name: Anne
Summerville, SC (Zone 8a)
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Xeramtheum
May 26, 2014 6:48 AM CST
This is an awesome idea but you want to use pennies made in 1981 and older. Those pennies are 95% copper. Pennies made after 1981 are only 2.5% copper and 95.5% zinc.
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Name: Jay
Nederland, Texas (Zone 9a)
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Horntoad
May 26, 2014 1:43 PM CST
Xeramtheum said:This is an awesome idea but you want to use pennies made in 1981 and older. Those pennies are 95% copper. Pennies made after 1981 are only 2.5% copper and 95.5% zinc.


Even though they are only 2.5% copper, it is a pure copper plating around a zinc core. So any slug crawling across a modern penny is still coming in contact with pure copper and it will have the same affect as an older copper coin.

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Name: Anne
Summerville, SC (Zone 8a)
Be a voice - not an echo!
Plant and/or Seed Trader Enjoys or suffers cold winters Hybridizer Birds Seed Starter Cat Lover
Pollen collector Morning Glories Greenhouse Bookworm Garden Ideas: Master Level Garden Sages
Image
Xeramtheum
May 26, 2014 1:57 PM CST
Ahh .. I did not know that. Thanks for the heads up!
"We were all humans until race disconnected us, religion separated us, politics divided us and wealth classified us."

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Name: Deb
Pacific Northwest (Zone 8b)
Region: Pacific Northwest Organic Gardener Herbs Dragonflies Dog Lover Keeper of Poultry
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Bonehead
May 29, 2014 11:33 AM CST
I didn't take the time to sort out the vintage of pennies -- just slapped them on willy-nilly. It was a very quick project - glue, slap, glue, slap. A child would enjoy this one.
I want to live in a world where the chicken can cross the road without its motives being questioned.
Name: Steve
Millbury, MA (Zone 5b)
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steve_mass
May 31, 2014 5:16 AM CST
Has anyone tested this by putting a slug in the middle and seeing it if makes its way out?

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