By Richard Jauron Extension horticulturist Iowa State University Extension Geraniums are popular flowering plants for beds, borders, containers, hanging baskets and window boxes. Plants are traditionally grown from cuttings. In recent years, however, seed-grown hybrid geraniums have become available.
Geraniums are fairly easy to grow from seed.
However, they are rather slow growing. Sow seed in early to mid-February to produce flowering plants for spring. Flowering occurs approximately 12 to 16 weeks after sowing. Suggested seed-grown geraniums for Iowa include varieties in the Orbit, Elite, Maverick and Multibloom Series. Commercially prepared mixes, such as Jiffy Mix and Redi-earth, are good germination media.