Fuzzy yellow things

I have discovered that one of my asclepias has little fuzzy yellow balls
on the stems/stalks and seed pods. What is this and what do I do about
it. 

I would like to collect the seeds once the pods ripen, but am not sure
if I should due to their being covered with whatever this is. If this is
a disease, does it carry through the pod to the seeds. I found out that
this is an annual asclepia (sorry), so that is why I want some of the
seeds.

I have another asclepia right beside this one and it does not have these
fuzzy yellow balls on it - just the one plant.

Thanks,
Karen
z5a

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