Some succulents are monochromatic – they have just one main color (usually green), but may have a variety of shades of that color. When creating a monochromatic arrangement, it's great to use different shapes and textures to add more interest.
What's the deal with this little rhyme? It's actually a “formula” that's commonly used in the world of container arrangements–and it's probably one of the most widely suggested guidelines for designing an arrangement. It's so simple, and it results in great arrangements every time.