Thank you, I think it so pretty and will add life to living room.

You're welcome, Janice! Honestly I have no idea if pinching it will affect blooming. When I moved to my house the plume poppy planted by the previous owner had taken over a huge corner of the garden, and was crowding out some plants I really liked, so I pulled it! It never got the chance to bloom. It was simply too big for me. However, I have the feeling nothing you could do to that plant would stop it. It's very vigorous. In fact I think you need to be vigilant to keep it from spreading too much and eating up your garden. It is pretty, though!

Sounds like a Tradescantia pallida, common name is Purple Heart. As for the biblical name, I have older relatives who call it Moses in the rushes. Here is a link that might be useful: Purple Heart plant

Not native, Hollyhock (Malva sylvestris) 'Zebrina' .