kerria 50%
sakura
cherry
onci
dendro
dogwood
saffron (50% & rest in box)
mei (50% & rest in box)

For how many fg spent you can guess
and we found out about it 4 days into the event and went hushing up everyone in messages when they posted in chat

- - - Updated - - -

edit
06/16/2017 when we found out