always thought it was the white cabbage butterfly.
look for small pale yellow eggs in a clump standing up on edge on the underside of the leaves. they have green smooth caterpillars.
good or bad? depends.....

Their larvae -- velvety green caterpillars -- specialize in cole crops. Don't bother peppers.

Small white cabbage butterfly :)

I am not seeing black dots on its wings, but the pictures I'm looking at suggest it could be so pale, I can't see them from my vantage point. I do have a bed of kale, a bed of collards... I will hunt under their leaves tomorrow and see what I find.

Thanks everyone.

Cabbage whites always have some black markings. You could possibly have the native Margined White, closely related. The summer forms are all white with no black markings.

The caterpillars of the margined white eat crucifers. You would have to be near an undeveloped area to have these in the city. Otherwise, look more closely for black markings.

The cabbage white caterpillar also feeds on nasturtium.

I have seen a lot of these tiny white "butterflies" and they are mostly flying around the white bindweeds in the open space by the park. These have no black spots, they are all white. Any idea what they are?

How do you get rid of them they are so bad my dog will not

go outside at night timfye@gmail.com