Hi. My husband bought me this beautiful plant. It can be a perennial but most ppl in use it as an annual. I'm in 6b central oregon gardening zone. I have a green house as well. I would like to know how to keep this plant blooming for a long time. I usually am good at this but this plant is just not on the internet like others most videos are in a different language. I would prefer to habe it out during spring and summer and in the green house or my house during cold times. Can someone explain how to keep this plant thriving as a perennial.