That's part of why gardening is a joy and an art, and not a science. You don't always know what's going to happen.

Oftentimes, despite the fact that you don't think two colors go together - when they sow themselves, they look fabulous.

Sometimes a self-sown flower will surprise me. I may have thought I didn't want anything there, but when they start to bloom, I'm enchanted.

Self-sown flowers provide a lot of serendipity, which is one of the reasons people garden. When they come up, it's a delight.