Avocado “Brogdon” has a Type B flower. While avocado trees have both male and female organs in one flower, the opening cycle varies.

Type A will open the female part in the morning for 2-3 hrs.and the male pollen in the afternoon of the next day. (Ref: UofCavo)

Type B will do the opposite.

Fertilization of avocados is more likely if two trees Type A & B of similar season are in proximity.

I chose “Brogdon” to Pollinate my “Day”. Purchased at the same time.