We all like to get free plants. And self-seeders produce new plants for us every year. They are ideal if you want a fuss-free garden, because they require little intervention. Left to bloom and set seed, these prolific varieties will soon fill every available patch in the garden. Here are my top 10 self-seeding plants. 1 Papaver
Blue fountains delphinium Captivating blue, purple, and white flower spikes will only get to about three feet tall, but won't require any staking support. These huge blossoms will bloom in June and July, but can bloom again in the fall if cut back after flowering.