25+ Seeds of Hibiscus Rosa-sinensis - Tropical Rose Mix. Enchanting colors and designs! Hibiscus cross pollinates very easily, so there's always some mystery of what color flower you will get. This is a diverse mix of 30+ varieties, all colors included, and a few doubles and multicolored "fancy" hibiscus. Hibiscus Rosa-sinensis is suited to grow well in tropical zones (8-12), but may be grown in other zones provided there's a green house or other protection. The colorful flowers attract hummingbirds and is a delight to watch! Pre-soak seeds in warm clean water for about 2+ days. Change water once or twice. Then shallow plant the seeds in wet soil (fresh good quality soil) in a shady spot that gets part sun.