Q. We have some fruit trees in our back yard that just now began to bloom, can we wait till Shabbat when the whole family is together to make the bracha or does it have to be done when you see them the first time?

A. Yalkut Yosef (Shabbos 3, 319,77) quotes some opinions that maintain that this brocho should not be recited on Shabbos either because by engaging one’s attention on the tree one might come to collect some fruit (Moed L’kol Chai 9), or by dint of a cabalistic injunction on gathering “nitzoitzois” (spiritual sparks) from a tree on Shabbos (Kaf Hachaim 226, 4). However most Poiskim disagree and permit reciting this brocho on Shabbos. (Yalkut Yosef ibid. – Nitey Gavriel, Pesach I, 6,7).

Horav Shlomo Miller’s Shlit”a opinion is that you can wait until Shabbos (avoid contemplating the tree) and recite together with a larger group “b’rov am” and have it adjoined to the count of the hundred brochos.

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit”a