84-91 Days to maturity. Plectranthus scutellarioides. Coleus Rainbow Mixture Seeds. Non-GMO, Annual. Rainbow Mix coleus seeds are a fun plant for many gardens across the country. Rainbow Mix seeds grow into a spectacular mix of tropical magentas, greens, yellows, and reds. Coleus, also known as Painted Nettle, blends well with lavenders, plectranthus, and other similar blooms and are sure to dazzle all season long. Rainbow Mix coleus seeds are an efficient and brilliant way to reinvigorate shade and part-shade plantings on commercial and residential properties. ~110,000 seeds/oz.