Snapdragons self-seed readily. Mulching under the plants may inhibit self-seeding.

Can snapdragons reseed themselves?

How do snapdragons keep coming back? Snapdragons propagate either by seed or cuttings. They are considered a “self-seeding” annual. When left alone, seeds from spent flowers will fall to the ground, survive the winter (up to -30 degrees!), and come back the next year as new plants.

Do snapdragons come back every year?

Snapdragons can repeat bloom throughout the season but they do best in the cool of spring and fall. In cooler climates, they bloom all summer long, and in milder climates, they sometimes bloom throughout the winter. These short-lived perennials are usually grown as annuals.