Confused with the flower cards

So is there a good way to find out which cards I'm missing that are active this month?

I'm a bit salty about the flower cards because I believe I had them all, but then deleted plenty of them because Niantic didn't show them as unique back in the day, so I just made sure I had one of every Pikmin colour and moved on. But I'm willing to give it another go, I just wonder at what point I'm done for the month.