The colors that are seen when sunlight is split by a prism are sometimes called the spectral colors. These are red, orange, yellow, green, blue, indigo, and violet. These ROYGBIV colors are often reduced to three red, green, and blue-violet which are the primary colors for the additive color system (light).
Growing coleus from seed. Coleus seedlings are abundant with varying shades of color from the moment they pop through the earth. Their vibrant colors are intensified when grown under fluorescent lights. An abundance of light is a must if you propagate coleus indoors in January.
Our Coleus plants are ready to plant into pots and there is no need to remove the fiber sleeve as the roots will grow through it. Before planting in areas that receive a lot of sun or wind, make sure that your Coleus have a chance to develop a good root system.oleus can also benefit from root stimulating products that add mycorrhizae to the soil. How to harden-off Coleus: After potting your Coleus, place them outdoors everyday for 3-4 hours in full or partial shade in a wind-sheltered location.