Below is a picture of some of the pots on my deck last summer. (Notice the blue theme.) Because of the "Efflorescence" painting, I know I will be looking for those lovely Green Envy Zinnias this year. The Midnight Blue Salvia is usually easy to find.Whenever I have had the big idea that I am going to save some money and grow some plants from seed indoors, they usually don't last very long. I either forget to water them, or I do not transplant them fast enough. However, I have had luck with seeds that I can plant directly in the ground.
Other than my perennial plantings, I cannot say that I have ever "planned" my gardens. What usually happens is that I purchase as many different kinds of blue annuals that I can find. Then, I go back to the greenhouses for the different colored and textured "fill ins" I need. I guess I do sort-of plan things as I go along, because I do pay attention to light needs, size, color and texture, but they are spur of the moment decisions vs. pre-planned.
The following a few of the seed selections offered by gardeners on Etsy plus a few other neat things. =)