I'm thinking about purchasing some Pentas seeds and... well... growing them from seed. It seems a much more economical way to fill out my beds with nectar plants than going to the Big Box stores and buying already grown plants (and probably cuttings of other plants). But it has me wondering, I have not, in the year that I have been doing this, seen one of my Pentas plants go to seed. Is this because of the 'engineered' state of most of the Pentas varieties available at Big Box stores? Or do Pentas need some rather exacting measures in order to become pollinated and go to seed? Or will I, by purchasing and growing from seed, be giving myself a huge headache down the road as these reseed themselves all over my garden (which I have yet to read any records of such happening)?