Yes, it is true that honeys from different
floral sources have different flavors, but how in the world can the
honey taste
like the fruit?  I have had a yard about 35 feet from a 2 acre raspberry
field
for the last 10 years or so and have never tasted the slightest hint of
raspberry in this wonderfully light and extra sweet honey.
Ted

    I suspect that a 2 acre concentration would not be enough to
discourage the foraging for other nectars unless there are no other
sources present at the time and supers are removed promptly when the
desired flow is over. There are particular techniques to garner these
varietal honeys. Immersing a colony within a field so that the only
producing bloom within several hundred yards of the hive is of one
variety will normally be sufficient if the bloom produces enough nectar.
This would require 20 acres or so.
    The honey does not so much taste/smell of the fruit, but of the
flower.
    In sufficient amount/ percentage content this can be determined. The
honey is more properly termed rasberry/blueberry/blackberry blossom
honey.
    The flower and the fruit can have distinctly different flavor/smell.
For example, a lemon flower will taste sweet, and has a distinctive
smell. It tastes nothing like the fruit. The varietal honey from the
lemon flower smells of the fresh flower and has a taste reminiscent of
the flower.
    The two are not mutually exclusive however, a flower that produces a
scent familiar to the scent of the fruit would be cantaloupe. In a
unique set of circumstances I have been able to harvest this year a
honey obviously of significant cantaloupe nectar. It is definite as
there is a distinct smell of cantaloupe to it. The taste is different
than the fruit however. It is sour/sweet much as sour apple  is
sour/sweet and carries the fruit odor.
    The fine point here is that the honey will take on the odor/taste of
the flower not the fruit, as the nectar comes from the flower. If the
nectar resembles the fruit than it is coincidental.
Thom Bradley
Chesapeake, VA