Flowering trees, fruiting trees... [botany]

[Externet]

At the nursery, the trees they sell are labeled as 'fruiting' , 'flowering' , 'shading' 

What are the 'flowering' ones biological purpose ?  Are these somehow manipulated trees; or their flowers have no stamen, stigma, no reproduction purpose ?  Those do not bear fruit.  (Like the ornamental cherry blossoms) How does it work ?

[iNow]

Human driven artificial selection AFAIK

[zapatos]

2 hours ago, Externet said:

What are the 'flowering' ones biological purpose ? 

Reproduction of course. Some trees are male, some are female and some are both. Ornamental trees are often manipulated to produce showy flowers and/or minimal fruit. I've never heard of a flowering tree that produced no fruit at all.