Rose seeds need to go through a process called cold stratification before they are able to germinate and start growing. One of the most common ways to stratify rose seeds is to Favorite Plant Combinations For Container Gardens House of Hawthornes Broad Leaf garden cress Restoration Seeds Succulent 'String of Pearls' Variegated House Plant Shop Large Outdoor Resin Planters Costco Sprouts Microgreens Barley Grass seeds