First off day 1 of dry season EVERYTHING on my world wilted immediately. Pretty bogus, seems like a bug but if not whatever. So unfortunately now I have to build a flingo. Do so and it unwithered everything but as soon as I picked it, it was withered again for the rest of the season. Flingo never did it's job after that. Only thing that stayed fine was my bamboo which was first fertilized after dry season began.
1. plant stuff near a flingo 2. wait for dry season 3. turn on flingo 4. harvest said things. after which point they wilt and never return unless fertilized