Thanks again my friends from Colombia!ππ
All the signs are names of flowers! For example, the blue flowers are "Nemophora=γγ’γγ£γ©"!
This is a general park, so there are no events going on.
Everyone can enter for free and just enjoy the view of the flowers!
However, it is prohibited to collect flowers there.
There are a few flower collecting events in Japan, but they are probably not very common. But of course there are many flower exhibitions!π