<P> There are several different kinds of fruits which are commonly called berries, but are not botanical berries . Blackberries, raspberries, and strawberries are kinds of aggregate fruit; they contain seeds from different ovaries of a single flower . In aggregate fruits like blackberries, the individual "fruitlets" making up the fruit can be clearly seen . The fruits of blackthorn may be called "sloe berries", but botanically are small stone fruits or drupes, like plums or apricots . Junipers and yews are commonly said to have berries, but these differ from botanical berries and are instead highly modified seed - bearing cones . In juniper berries, used to flavour gin, the cone scales, which are hard and woody in most conifers, are instead soft and fleshy when ripe . The bright red berries of yews consist of a fleshy outgrowth (aril) almost enclosing the poisonous seed . </P> <P> Strawberries have been grown in gardens in Europe since the 14th century . Blueberries were domesticated starting in 1911, with the first commercial crop in 1916 . Huckleberries of all varieties are not fully domesticated, but domestication was attempted from 1994 - 2010 for the economically significant western huckleberry . Many other varieties of Vaccinium are likewise not domesticated, with some being of commercial importance . </P> <P> Like most other food crops, berries are commercially grown, with both conventional pest management and integrated pest management (IPM) practices . Organically certified berries are becoming more widely available . </P> <P> Many soft fruit berries require a period of temperatures between 0 ° C and 10 ° C for breaking dormancy . In general, strawberries require 200--300 hours, blueberries 650--850 hours, blackberries 700 hours, raspberries 800--1700 hours, currants and gooseberries 800--1500 hours, and cranberries 2000 hours . However, too low a temperature will kill the crops: blueberries do not tolerate temperatures below - 29 ° C, raspberries, depending on variety, may tolerate as low as - 31 ° C, and blackberries are injured below - 20 ° C. Spring frosts are, however, much more damaging to berry crops than low winter temperatures . Sites with moderate slopes (3 - 5%), facing north or east, in the northern hemisphere, near large bodies of water, which regulate spring temperature, are considered ideal in preventing spring frost injury to the new leaves and flowers . All berry crops have shallow root systems . Many land - grant university extension offices suggest that strawberries should not be planted more than five years on the same site, due to the danger of black root rot (though many other illnesses go by the same name), which is controlled in major commercial production by annual methyl bromide fumigation . Besides the number of years in production, soil compaction, the frequency of fumigation, and herbicide usages increase the appearance of black root rot in strawberries . Raspberries, blackberries, strawberries, and many other berries are susceptible to verticillium wilt . Blueberries and cranberries grow poorly if the clay or silt content of the soil is more than 20%, while most other berries tolerate a wide range of soil types . For most berry crops, the ideal soil is well drained sandy loam, with a pH of 6.2 - 6.8 and a moderate to high organic content; however, blueberries have an ideal pH of 4.2 - 4.8 and can be grown on muck soils, while blueberries and cranberries prefer poorer soils with lower cation exchange, lower calcium, and lower levels of phosphorus . </P>

What is the difference between berry and fruit