CH-21055 Dendrobium victoria-reginae - 2 inch pot. Blooming Size. Flowers are about 1.5 inches wide. Plants are about 1 foot tall with the pot. Not in bud or bloom at this time. These can be a bit of a challenge to grow. They hate it hot. Prefer it on the cool side. Cooler temperatures also bring more vivid flower colors. Generally blooms in spring/summer, but it can scatter out.