Nasturtiums

Nasturtiums

Hi. The past two years I have grown nasturtiums from seed. They are the usual variety, nothing fancy. So, both last year and this year shortly after they start to flower I notice clumps of black eggs and bugs that seem to congregate on the underside of the leaves and down the stems of the leaves and flowers. Ants seem to be crawling like crazy over the plants, but when I look close the tiny little black bugs aren't ants, more of the shape of fleas. From my half-assed description, but would anyone be able to help me with identifying and/or alleviating this pest. They started to make themselves at home on my normally pest-free geraniums.
Wooohoo spring is here..

Wooohoo spring is here..

white cosmopolitan

white cosmopolitan

PLANT ID

PLANT ID

A great big flower!

A great big flower!

Puya

Puya

My new place.

My new place.