I can't understand why fertilizer is "not available" after being recharged sometimes
Oh! Maybe I should’ve explained or given clues to certain mechanics. You cannot use both the sprinkler and fertilizer at the same time (because they come out of the same pipe) That is an oversight on my part, sorry. It will be fixed in the full release, but I might also make a small update fixing some bugs that have been reported to me and also explain this better in-game.