I have Linaria purpurea, there was a couple of pink plants amongst them but I'm not sure it's grown this year. I was given a free perennial seed mix with an order, not much grew so I tipped the tray of home made compost out on the garden. A couple of years or so later some germinated, now I have them in lots of places and they are loved by bees. The old plant dies back, making new plants on runners but they also set seed around. They don't smother anything and make a nice filler.
