I would also look at the zone, do they use the terms dormant on the tags? I would think the majority of the public actually purchasing the plants are familiar with the terms evergreen and deciduous, dormant would be confusing to them. Looking at the catalogs they talk about foliage type as dormant/semi-evergreen/evergreen, the zone in this particular cat comes up if you select additional info. Just think the term dormant is more for a niche group, vs the much larger group of individuals that purchase the plants. Change is tough.