Loved the concept of the game. A well deserved prize so kudos to the devs on winning ;)
The idea of translation in games - even if here is done indirectly with the use of the Plantslator(tm) - is not very often threaded. On my first playthrough I got 65% of the dialogue, mostly because I thought the last convo with Rose would offer the chance to talk a bit more.
There is a lot of replayability although some people might find the trial-and-error approach to talking to the flowers a bit grating. I say "pfffffttt" to those people. How dare they!
Jokes aside, I think the game not forcing you to talk and giving a simple quest is a good idea. It gives you a grasp of the game and if you feel invested on it, you can keep searching for more dialogue options. It would be nice for moar games on this setting.
If only there was a Plantslator on this world u.u
Anyway, great game :)