My Day avocado tree flowered. I bought it from Logees about 1.5 yr ago. Behind it is a 6 yrs old Wurtz avocado tree.
I've been told to hand pollenate the flowers. Fully open flower is male with pollen and the closed/partially open flower is female. The article said to first collect the pollen with a small paint brush and put collected pollen in a small bottle cap. Then use the paint brush to transfer the pollen to the female flower.... it said to gently open the closed/partially closed female's three (3) petals and dab the pollen inside.
I hope your March 2013 flowers gave you some avocados.