Annie, I'm not a Begonia expert, but is your Begonia getting adequate light?

Is the Begonia that isn't blooming the same type as your other Begonias?

Also, don't know if using blooming fertilizer will help, maybe someone will jump in, offer advice.

Are your Begonias saves from previous years or new?

Toni

They are saves from last year but so are many of the others. I have used blooming fertilizer. They are all the same type. Getting plenty of light. That is why this has me so puzzled.

Annie....

That's strange. Sometimes plants do the strangest things, some good, some not so good. :)

I don't have an answer. I thought perhaps your Begonia wasn't getting enough light..

Are your Begonias planted in the same soil type?

Maybe someone who knows Begonias will respond. Toni