So, we've had some fine examples recently of why we shouldn't follow the sowing instructions on seed packets to the very letter.
The normal instructions include vague bar charts saying indoors, outdoors under glass etc plus harvest. If we were to follow the instructions, we would have several rows of seeds presently under several inches of snow or at the very least flooded out!
Like wise with harvesting, we usually crop by eye, judging when something looks ready rather than waiting until the dates indicated or cropping before the fruits are ripe.