Pear trees can live for roughly 30 years as long as they remain healthy. The various growth stages of a pear tree play an important role in the tree's health throughout its life.
Seedling and Sapling
Seedlings have just emerged from germinated seed and often are small and weak, while a sapling is a term used for the early years of a tree's life, until it has matured enough to produce fruit. Pear trees are saplings until 4 to 6 years of age or older, depending on the cultivar.
Maturing pear trees continue to grow taller and broader even as they produce fruit. These trees are in the middling stage of the life cycle and require less frequent care.
Mature trees continue to produce blooms, leaves and fruit, but do not grow much taller. Mature trees have reached the maximum size and will remain roughly the same until their death.