Ooooooooh, I wouldnt reccomend D.linearis at all.....
Its hard to grow. And germinate
I also wouldnt reccoemd S.leucophylla and S.minor.
They coem from hot places in the U.S and are not very hardy.
I odnt knwo about the hardiness of all the rubras, tho rubra subsp. jonesii is very hardy.