"ROSE SEED GERMINATION STEPS Before growing roses from seed, the rose seeds need to go through a period of cold moist storage called \"stratification\" before they will sprout. Plant the rose bush seeds approximately ¼ inch (0.5 cm.) deep in a seed-planting mix in seedling trays or your own planting trays. The trays need not be more than 3 to 4 inches (7.5 to 10 cm.) deep for this use. When planting rose seeds from various rose bush hips, I use a separate tray for each different group of seeds a
