Fruit with a reddish bloom on the skin (except for coloured varieties) grew at the highest of the foliage, where the alternation between sunlight and overnight dew encourages such redness.
The date of flowering from one year to the next may differ by a couple of weeks, while the harvest date tends to be stable. The duration of the fruit growing cycle depends significantly on environmental conditions, especially in the ripening stage.
Pears are harvested slightly unripe, otherwise it would not be possible keep them for long periods as is the case today. Nevertheless, it is possible to complete ripening naturally at a later stage with suitable precautions.