Great for you to finally let us know about this nerf.
I am so glad my garden was super well established before this last patch/expansion as they sure did nerf garden splicing. And worse they did it with zero communication. Greenhouses are now mandatory for year round profit as most plants only produce one season a year yet require 3 seasons worth of care, splicing is a bad joke, and well seed packets are random and the best way to get rare seeds. This is by design but very annoying making gardening less fun. This isn't counting the forever watering/weeding/spraying for bugs bug, the can't buy the rare seed packets bug or the disappearing scarecrow bug. I used to enjoy gardening and every non-apartment living sims family had one but at this time I am frustrated with it.
This lack of communication added to lack of communication on other areas of the game like say cheats, sure is frustrating. Nerfs aren't fun, but sometimes needed, but surprise nerfs they tell use about a week or so later, after we spend time trying to fix (clearing cache files, repairing the game, looking for fixes on the forums and the like) the intended nerf thinking it is a bug, that is not acceptable. Some goes with the cheats nerf.
The way they handled communication for the last few patches and Seasons is very irritating to say the least. Now at least we know and can move on. Sure wish they put this is the patch notes. 3 or 4 sentences would have saved everyone some time. I am not happy with how this information was released.