Violas

My violas are still going strong from earlier this year, I did think they would stop flowering by now but they just keep going and more and more buds are coming out! Is this normal? I am quite proud as not grown them before so I must be doing something right!

I wondered if you can take cuttings from them? If so is it easy and how would I go about this? As a new gardener I have never done cuttings before but as they are pretty and done well I would like to try.

Will they also last till autum/winter or will they die down?

Thank you!