What are the connotations of "Vayotzei Perach, Vayatzeitz Tzitz Vayigmol Shekeidim"?
Rashbam, Moshav Zekenim: When Moshe withdrew the sticks, they had already produced flowers, and then, before the eyes of the people, they sprouted buds and ripened into almonds. 3
What is the significance of the fact that the sticks grew specifically almonds?
The verse implies that the people saw that it produced flowers, sprouted buds and almonds had ripened. If the almonds were finished, they did not see how they developed [from flowers and buds]! And why does Horiyos 12a say that it was hidden, with its almonds and flowers? The flowers already became almonds!
Da'as Zekenim: It produced flowers on one side, which remained. On the other side it produced flowers, which fell like normally, and it budded and produced almonds. 1
Moshav Zekenim: Why did Horiyos 12a not mention the buds? Since they saw fruits, surely there were buds; presumably, there was not a miracle to grow fruits not from buds. It produced flowers like other trees.
Moshav Zekenim, citing R. Eliezer of Garmaiza: Aharon's stick produced new flowers in front of them.
Moshav Zekenim citing R. Aharon: It produced flowers on one side, buds on one side and almonds on one side. (This implies that it had three sides. Perhaps a small branch came out of it. Alternatively, the text should say like Da'as Zekenim
Why did it need to say both "Parach" and "va'Yotzei Perach"?
Moshav Zekenim, citing R. Eliezer of Garmaiza: People were thinking, perhaps Moshe took a stick that already blossomed, and wrote Aharon's name on it, and Aharon's stick was dry and still there. Hashem did a miracle, and Aharon's stick produced new flowers in front of them.
The verse implies that now it produced flowers, buds and almonds. Avos (d'R. Nasan 41, and Pesachim 54a) says that Aharon's staff was created Bein ha'Shemashos at the end of Creation, with its almonds and flowers!
Aharon's staff was created Erev Shabbos bein ha'Shemashos with the potential to produced flowers, buds and almonds in one night, a potential which turnd into a reality here.