Self-sowing annuals are plants that will drop seed in your garden before they die and will germinate on their own the following year. So they return year after year like perennials, but from seeds, not from their roots.

What does self sown mean?

sown by itself, or without human or animal agency, as of a plant grown from seeds dropped from another plant. sown by any agency other than humans, as of a plant grown from seeds scattered by birds or the wind.

What does self seeder mean?

Some plants produce seeds that will sprout where they fall. When a plant is self-seeding, it means that it produces seeds which can be collected or allowed to fall to the ground and replant themselves in that location. These seeds germinate during the fall and lie dormant during the winter months.