Windmill Palm

Question

How can you tell which are male from female flowers since they’re both yellow colored?

Answer 1

Male trees will produce yellow flowers in a branching form.
These will not produce fruit.
A female tree has flowers that are more of a green color then yellow.
These will produce fruit.

Occasionally a tree will produce both male and female flowers.
The flowers will be more like the male flowers, but larger. These will produce fruit.

https://www.gardeningknowhow.com/ornamental/trees/windmill-palm/growing-windmill-palms.htm