When I learned the skill, i replanted my crops with the Trowel, this made crops that would take 10+ hours go down to about 9. After replanting a few crops I noticed one in particular (Spinach) reset it's timer back to the start. I relogged to see if it was a visual bug, after relogging my trees went back to 12 hrs instead of 9, and everything else also changed their time to the original time (without the bonus speed), making the perk basically unusable now 🙁 not to mention in some cases (such as Spinach), replanting will 100% reset it's timer back to 0, which shouldn't happen.
I got it on video replanting trees with perk, and replanting soy. With the perk soy shouldn't be 12 hrs. My IGN is Red