Snapdragon hybrids (seedlings from perennial 'Dulcinea's Heart'

Last year I purchased a small plant of snapdragon 'Dulcinea's Heart', a perennial snapdragon. It had no trouble surviving our winter, even with record snows. It also apparently seeds freely and by late February seedlings were coming up around it. The parent plant is the palest colored one. I like the more vivid colorations of the offspring, though I guess this winter will be the test to see if they are hardy like their parent.