The virginiana blooms October through November, usually after the foliage falls. Various subspecies of the vernalis will bloom in winter and early spring with a variety of colors, including a strong red from the 'Carnea.' I have grown them both as a small tree and a selective-cane shrub.
BTW, my winter staples are Erica X darleyensis 'Darley Dale," for full sun and Helleborus niger for shade.
RE: What to Grow In Winter Series, Post #9 Witch Hazel