We have a fine patch of milkweed in the back yard that attracts & nourishes the Monarch butterfly fleet. One of the plants also attracted a dense aphid population:
They’re pretty much featureless orange blobs, although the one on the edge of the leaf at the upper right does show off its legs & antennae:
Where are the ladybugs when you need them?
The Smell of Molten Projects in the Morning 
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2 responses to “Aphids on Milkweed”
Did not know they are commercially available off-the-shelf components for debugging…
http://www.treehugger.com/lawn-garden/why-you-shouldnt-buy-ladybugs-natural-pest-control-your-garden.html
The ladybugs are all perfectly natural around here, although Mary does buy BT and nematodes by the bazillion …