What fruits require a shehehianu?
One can only recite shehehianu on produce which is seasonal and therefore not available year-round. Nowadays, many fruits which are seasonal are still readily available to be purchased year-round, as they are imported from countries with warm climates, and would not require a shehehianu. If one wants to recite a shehehianu on a new fruit, they should get a more exotic one like starfruit, passionfruit, etc.
What if I do not enjoy the taste?
If one knows that he does not enjoy the taste of a specific fruit and does not feel any happiness in eating the new fruit, a shehehianu should not be recited.
Should I recite ha’ets or shehehianu first?
It is preferable, to first recite ha’ets, followed by a shehehianu, and then eat from the fruit. Some have the custom to first recite the shehehianu followed by the ha’ets.
What if I forgot to recite shehehianu?
If one is still in middle of eating, he can still recite the beracha. However, if one finished, the beracha can no longer be recited.