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)
Only dead fish go with the flow!
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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.
"Twenty years from now you will be more disappointed by the things that you didn’t do than by the ones you did do, so throw off the bowlines, sail away from safe harbor, catch the trade winds in your sails. Explore, Dream, Discover."

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Name: Jay
Nederland, Texas (Zone 9a)
Region: Texas Region: Gulf Coast Charter ATP Member I helped beta test the first seed swap I helped plan and beta test the plant database. I was one of the first 300 contributors to the plant database!
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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)
Only dead fish go with the flow!
Plant and/or Seed Trader Enjoys or suffers hot summers Hybridizer Birds Seed Starter Cat Lover
Pollen collector Moon Gardener Hibiscus Greenhouse Dragonflies Garden Ideas: Master Level
Image
Xeramtheum
May 26, 2014 1:57 PM CST
Ahh .. I did not know that. Thanks for the heads up!
"Twenty years from now you will be more disappointed by the things that you didn’t do than by the ones you did do, so throw off the bowlines, sail away from safe harbor, catch the trade winds in your sails. Explore, Dream, Discover."

Mark Twain
Name: Deb
Pacific Northwest (Zone 8b)
Region: Pacific Northwest Organic Gardener Herbs Dragonflies Dog Lover Keeper of Poultry
Birds Lover of wildlife (Raccoon badge) Garden Ideas: Master Level Celebrating Gardening: 2015 Garden Sages Plant Identifier
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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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