I also am having problems with the sprinklers - I bought the new one yesterday and watered my Farm 16 - Quest Farm after planting several different times crops.
The Pumpkin which are a 4 FT day crop (80 hours) show ready in 17.4 hours.
Sunflowers are a 3 FT day crop and show ready in 7.4 hours
Both of which are correct.
The last row however clearly did not actually get watered - I have just watered again so they show watered now. But the times are all wrong and they were Def planted at the same time.
For example Corn shows ready in 18.6 hours but should be the same time as the Sunflowers.
The shorter term crops on this farm did not go to waste so it is only the area over to the top that got missed.
I cant get a clear screenshot that shows the time but this photo shows the difference in growth between the top row and the second row. The Raspberries shown I have only just planted. But the crops where my Avatars head are were planted and watered yesterday the same time as the ones to the left of the raspberries. The first few to the left are 4 day crops but in much more growth that the ones behind me.
EDIT
I have just reloaded my game and the raspberries and artichokes where my avatar is standing are not watered but everything else that I just planted is. They were all planted at the same time and watered at the same time
