White Butterflies?

Is it just me or is the lower mainland being invaded by white butterflies this year? Is there anything I need to know about these harmless-looking creatures?

 

There is if it's white cabbage moths, they lay eggs on your cruciferous vegetable plants and then the caterpillars eat holes in them. If it is a big pretty white butterfly, then I don't know. I have not noticed an abundance.

Pieris rapae - Wikipedia

 

Thanks. You've confirmed my suspicion... but how can I tell whether the ones in my yard are "bad" or "good"?

 

Cabbage whites are butterflies. However, we do have two species locally, one native and one not. If it is has a spot, it is the non-native. See here for a comparison: Observations · iNaturalist

 

203 observations of the invasive species, and 9 of the native one - that's a sad thing to observe

 

This summer larger than normal number of Aporia crataegi was observed here, in Estonia. They are also white.
Aporia crataegi - Wikipedia