Name: Elaine Sarasota, Fl The one constant in life is change
Hm, some begonias are somewhat sun tolerant, Gigi. Maybe under the shade of one of your plumerias a begonia would get enough shade? This one 'Maurice Amy' gets morning sun full-on until about 11am. More light makes the pink dots on the leaves a brighter color. It also encourages blooming - I just noticed the tiny little pale pink flowers today!
I've been meaning to ask, why are your trees all in pots? Mangoes grow and fruit wonderfully in the ground, and would give you a nice bit of shade, too. They will be more tolerant of cold weather in the ground, as well. (the roots stay warmer)
I've got a big white Brugmansia showing her skirts today. The tall one in the pool cage is getting even pinker. The fragrance at night is amazing!
Elaine
"Success is stumbling from failure to failure with no loss of enthusiasm." –Winston Churchill