They never said it would have to be the same exact seeds for every area. The concepts look similar to selection boxes, simply meant to allow you to put all the seed types you want into the appropriate squares and have them all planted at the same time.

Which would actually be far less annoyance than having to go one by one as we do currently. So I'm all for it, though making it an optional toggle somewhere wouldn't hurt either for those who like to do the slow method.

Could see the concept working so that partial planting is doable as well, for when you need to leave one type of finished plant in but replace the cardinals with new ones for intercrossing.