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Jul 8, 2015 2:26 PM CST
Name: Reid
North Branch, MN (Zone 4b)
Celebrating Gardening: 2015 Garden Ideas: Master Level
As you can see from the picture, these were on the stem of a thistle. Thanks!
Thumb of 2015-07-08/Anderwood/4820c1
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Jul 8, 2015 3:10 PM CST
Name: Janet Super Sleuth
Near Lincoln UK
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They are aphids, not necessarily bad. Less bad on a thistle than a prized plant. If you watch them I bet you will see them disappear, birds eat aphids and wasps use them either to take to their nests to use as hosts for their eggs, or some parasitize them in situ by injecting an egg into the body which will be food for the developing young. If you destroy aphids you could be destroying an important predator which will increase and keep pests at bay.
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Jul 8, 2015 3:13 PM CST
Name: Reid
North Branch, MN (Zone 4b)
Celebrating Gardening: 2015 Garden Ideas: Master Level
Thanks!!! I will leave them be.
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