Pitaya dragon fruit

1st year 4 sm flower buds & immature fruit.  2nd year nothing
3rd year 1 larger flower bud.
Plant is supposed to be in well draining soil & not over watered.
Our soil is clay & we just had the wettest June & July in recorded history for San Diego.  Wish us luck, I bought this plant with my oldest daughter in mine because she loves it.  https://en.wikipedia.org/wiki/Pitaya