How can you get your avocado tree to bloom?
Certified GKH Gardening Expert
This, mostly, depends on the age of the tree. It can take 10 years or longer to see fruit, although sometimes it can be sooner.
Are you wanting a flower for fruit, or just to have flowers? Even if you do get a flower, it usually requires two separate trees to fruit. Male and female flowers do not often grow on the same tree. The exception would be if you have bought a certain cultivar that is self fertile.
Here is an article for more information on these trees: https://www.gardeningknowhow.com/edible/fruits/avocado/avocado-tree-growing.htm