Here's the deal... The parts of the task that have already been completed do not have descriptions. Just a checkmark. So the one who knows what to do is not yet sure how, and the one who knows how has already forgotten what to do, Attach a full description of the task. It's better to take a screenshot along with the rest of the panel :)
But offhand, you either need to buy a Harvest upgrade of the 7th level (there seemed to be 8 in total) on the farm, or collect a crop that has sprouted seven times :) But rather, the first or the second is already very cruel :)