When one sees for the first time during the month of Nissan fruit trees blossoming, one should say the Brocho "Baruch..Haolom shelo chiseir be'olomo klum uvarah vo briyos tovos ve'ilonos tovos leihanos bahem bnei adam." (Who has made nothing lacking in His world and created in it goodly creatures and goodly trees to give mankind pleasure). This Brocho is said just once a year - the first time that he sees it. Although there are a number of Poskim including the Elya Rabba that say that if one did not say the Brocho the first time, they can still say the Brocho when seeing it the second time, the Alter Rebbe however, does not follow that ruling. According to the Alter Rebbe, if one missed the opportunity the first time that he saw it, he cannot say it again during that year.

Although the ideal situation is for the Brocho to be said during the month of Nissan, it would seem that bdieved (ipso facto) if one did not see the trees blossoming until Iyar, it would be permitted to say the Brocho. (Seder Birchas Hanehnin 13:14, Ktzos HaShulchan 66:9, Badei HaShulchan 69:18)

Women who see the blossoming of the fruit trees should also recite the Brocho. (Nitei Gavriel, Pesach 6:6)

One is permitted to say this Brocho even on Shabbos and Yom Tov (Nitei Gavriel, Pesach 6:7) Preferably, an effort should be made that the Brocho be said when seeing two trees at one time, however, if there is only one tree the Brocho can still be said. (Badei HaShulchan 69:18)

The Brocho should not be said on trees which grow fruits that are grafted from two species, such as nectarines. (Nitei Gavriel Pesah 6:13) In Australia where the trees blossom during the months of Elul and Tishrei, the Brocho can be said at that time. (Nitei Gavriel quoting the MinchasYitzchok Vol. 10:16)
Compiled by Rabbi Eliezer Wenger Questions or Comments