I'm also in zone 7 and I've had annuals self seed before, especially after a mild winter. Most of them didn’t look much like the parent since so many were hybrid plants.

The flowers are gorgeous.

To plant this years flowers. And I have a bucket of zinnia seeds from last year's blooms. I just hate pulling them if that's what they are. Having the same problem with my black-eyed susans. They are definitely self-seeding perennials, but I can't tell if the little seedlings all are over their bed, and the garden path are keepers. Life and death decisions in the flower garden!

How does everyone else's garden grow? Just about all my perennials are up and going, some already getting ready to bloom, like the oriental lillies, purple cone flowers, and iris. Lost my crepe myrtle and gaura though.

Have to get vege garden ready to plant. Late already. Seeds are in the mail!

I planted the Gloriosa Daisy variety and they slowly increase the garden space used every year. About 5 years ago I decided to get rid of them and pulled them out only to find another batch replaced them the next year.

I've seen them reseed for two years or more. Each successive generation the blooms become smaller and the colors less vibrant. But still...free flowers!

they seem to dwarf in future generations-used to see pansies do it in zone 5. They would show up in the lawn below the flower boxes on my mother's porch.

I love zinnias and I have them reseed frequently.

They reseed in my garden. Abundantly. Everywhere. The first year there are only leaves. They flower the second year. They don't mind being moved to a more convenient spot.

I pulled a bunch out. I'll just leave the rest and see what they do. Although I'm planning on planting Missouri Primroses in that bed this year.

I love zinnias!