Pears belong to the rose family and are similar to apples and quinces . Given that there are about a thousand varieties, we distinguish them by size , shape, color , taste and length of storage. For cultivation of pears it is important to choose a suitable manufacturing space . Noble varieties of pears grow best and are born in regions with lots of sun and plenty of moisture , which are suitable for growing grapes and peaches . Pears require modest amounts of rainfall compared to the apple. Pears does not tolerate extreme cold . During the deep winter dormancy, it can withstand, for a short period of time, up to -25 ° C , and some varieties and -30 ° C. Pears do not withstand high temperatures and low air humidity during the growing season . With temperatures above 34 ° C and relative air humidity below 60 % (end of July and in August ) comes the appearance of leaf blight in most varieties . This phenomenon can be partially neutralized by watering system . Pears requires soil rich in humus and nutrients elements . All pear cultivars are essentially self-sterile , which means that when you are establishing plantations strictly avoid the homogeneity of plantations, that is planting only one variety , so plant a few varieties of suitable pollinators that can be planted in a small number of basic varieties .