Plants that grow from seed are fun ways to get many plants out of one. They are also great to use for neighborhood seed swaps. Seed plants can have the ability to turn one flower garden plot into many and populate the landscape with blooms and foliage. Plants that grow from seed will have "propagate from seed" listed in their descriptions. Choices for seed plants can be wide and varied.
Common Snapdragon, or Antirrhinum majus, is from the Scrophulariaceae, or figwort, family. It is a fast growing easy for beginner plant that attracts hummingbirds. Flowers can be any color except blue and the sizes will range from 3 feet to 4 inches tall depending on the cultivar. Flowers are tubular. Plant a snapdragon in well drained soil in full sun but it will tolerate partial shade. Propagate via seeds in fall or winter.
Orange Cosmos, or Cosmos sulphureus, is from the Asteraceae/Compositae, or aster/daisy, family. It is a fast growing plant that is easier for beginner gardeners to grow. It is drought tolerant and will attract butterflies. Leaves are green and feather like with flowers yellow or orange 2 to 3 inches wide. Orange cosmos will grow 1 to 7 feet tall. Plant this plant in well drained soils and in a bright sunlight location. Propagate via seed in fall or spring.
Opium Poppy, or Papaver somniferum, is from the Papaveraceae, or poppy, family. It is a fast growing plant that is good for the beginner to grow. It will grow 3 to 4 feet tall with 3 to 6 inch blue green leaves. Flowers are red, pink, white, purple, or mauve and 4 inches wide. Plant the opium poppy in any well drained soil and full sun. Propagate via seed in the few weeks before last frost.
California Poppy, or Eschscholzia californica, is from the Papaceraceae, or poppy, family. It is an easy to grow plant. Leaves are 6 to 8 inches long and fern like with flowers 2 to 3 inches wide. Flower colors are orange, red, or yellow. California poppy can get up to 12 inches tall. Plant this in poor well drained soil in full sun. Propagate from seed in fall or spring.