It's the middle of summer, and I like to plant melons since they bring in some good money.  For some reason, two of the withered when they get watered everyday by my iridium sprinkler.

[![Withered Melons][1]][1]

Why did they wither?  The season hasn't changed with them planted (it's day 14 in my current summer).  The same thing happened earlier with my poppy flowers as well which are also watered by a sprinkler.  

  [1]: https://i.sstatic.net/71i1p.png