My Esperanza plant had yellow blooms when it was planted in the Spring. Now it is happily growing away but without flowers. It gets full sun until about 3pm. The same is true of the Pride of Barbados plants nearby. They grew new growth to their current height of 3 feet but no blooms have come forth yet. The green leaves on both subject plant types are brilliant.
Gillespie County Texas
Sounds like there is enough sunlight. The only other reasons are:
you have a variety that does not flower all the time or the soil is so rich with compost or nitrogen fertilizer that the plant just grows foliage and no flowers.