Yellow Bugs - Knowledgebase Question

Warminster, PA
Question by kmcdevit
June 27, 1999
I have spotted very small yellow bugs on my Ice Ballet
Asclepias. They are approximately the size of a pin
head and are mainly at the top of the plant. Should
I spray insecticidal soap and do you know what these
bugs are?

Answer from NGA
June 27, 1999


Asclepias, or milkweeds, attract butterflies. The yellow dots on the tops of your plants could be eggs, not insects. If you're sure they're moving (use a magnifying glass to make sure), you can first try washing them off with plain water. If that doesn't work, insecticidal soap is effective against soft-bodied insects such as aphids. Aphids come in all colors, from pale yellow to green to black, and shades in between. In a diverse garden, where there are aphids there are likely to be ladybugs. Ladybug eggs are a yellowish orange in color and are laid in clusters. When the eggs hatch, the hungry larvae look for aphids. So, before spraying anything, make sure you've positively identified the problem as a pest.

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