Last year I used a permanent marker to try to identify my irises when they weren't blooming so I could share particular colors with other iris lovers. The permanent marker wasn't very durable. So now I'm marking the greenery with the acrylic paint that is intended for birdhouses. I'm numbering them so I don't have to decide how to indicate colors. I'll just match my numbers with pictures.
3. This one is more a peach color than shows up here...or salmon. It is lovely against a Japanese Maple.
1. This one is fairly short and is dark purple all over. It is the first to start blooming.