This is my 6th or so play-through and each time I would work steadily to completely clear my farm so I could maximize the amount of grass that spreads for future animal hay. This time I did four corners (single player), left one corner neglected, and this happened! I then read how it works on the wiki and I understand why I never got them before haha. I am sooooo excited.
*Lightning strike the next day
No! It’s dropped a couple seeds and a few more grew so I’m in the clear if lightning does destroy one haha