Does it become a biennial plant? I mean, it's ok if it will bloom next year, but will it ever bloom well if it becomes a rosette?

According to what I read around on the internet, Lisianthus starts rosetting when the temperature is higher than 75F, especially during the seedling stage. When it becomes a rosette, it means it will not bloom for a certain period of time, and it will only do so if the conditions for blooming are restored. This means that when Lisianthus are rosetted, they will not bloom in the same year they have been sowed, but they will have to be overwintered indoor on a windowsill.

I also read somewhere that some people overcome rosetting by spraying a solution of 30 part-per-million gibberellic acid (GA3) on the plants whenever they start rosetting. I have GA3 at home, which I used to germinate some Trollius seeds, so maybe I can take advantage of what I have on hand.

I am just a passionate of plants. I don't want to grow flowers in order to sell them. I just love to know how these little wonders manage their growth (and also how much they are gonna make me wait to see them blooming)

What is your experience?

By the way, I am in Dallas, Texas. (Zone 8a)

Rino