15 Seeds Heleborus Christmas Rose Flower Mix Christmas rose is a poisonous plant if ingested. This gorgeous flower blooms in early winter to early spring. Has leathery, coarse textured, shiny green foliage that remains attractive year-round. Can be used as an attractive ground-cover that reaches 12-14 inches tall and spreads about the same across. Perfect for giving color to the garden in winter. Can be used to line the edges of sidewalks or garden paths. Edging a path is a job they do very well as they can be seen up close and fully appreciated. Foot traffic is not recommended. Can be sown in the fall because the seeds need cold treatment to germinate. If you prefer to start the seeds indoors, store in refrigerator for 3-6 weeks to break dormancy. Christmas rose has beautiful foliage and can take up to three years to finally bloom but the unusually beautiful flowers are well worth the wait.