I'm considering making hybrids on the island but I've yet to confirm if flowers can be bred on the island. I'm also wondering if flowers wilt on the island if anyone has attempted to do this can you confirm if it would work?
I think the island stays static. I've been playing since the 9th and unlocked the island on the 13th or 14th. So, I've been visiting the island for 12 or 13 days, the only new flowers on my island are the ones I put there from tours.