Gardening Plant Encyclopedia Annual Zinnia This annual is one of the most carefree and colorful plants you can grow. By Viveka Neveln Viveka Neveln Instagram Viveka Neveln is the Garden Editor at BHG and a degreed horticulturist with broad gardening expertise earned over 3+ decades of practice and study. She has more than 20 years of experience writing and editing for both print and digital media. Learn about BHG's Editorial Process Updated on August 27, 2022 Share Tweet Pin Email Zinnia Overview Description Zinnias, which come in myriad shapes, sizes, and colors (excluding blue), are some of the toughest annuals you can plant. They're also a pollinator favorite. Low-growing zinnias are perfect for borders. Taller varieties, which reach several feet high, make an excellent choice for cut flowers. Genus Name Zinnia Common Name Zinnia Plant Type Annual Light Sun Height 1 to 3 feet Width 12 to 18 inches Flower Color Green, Orange, Pink, Purple, Red, White, Yellow Foliage Color Blue/Green Season Features Fall Bloom, Summer Bloom Special Features Attracts Birds, Cut Flowers, Good for Containers, Low Maintenance Zones 10, 11, 2, 3, 4, 5, 6, 7, 8, 9 Propagation Seed, Stem Cuttings Problem Solvers Deer Resistant Colorful Combinations Zinnias' many different colors and floral types add interest to cutting gardens. Floral options include both cactus and quill-type blooms with long, narrow petals, and pompom-type blooms that look like little spheres. Since zinnias come in a variety of colors, they can work well in almost any flower arrangement. Zinnias are a favorite with pollinators such as butterflies that like to land on the flowers and drink their nectar. While taller zinnias suit cottage and cutting gardens, their lower-growing, creeping or spreading relatives work well in containers. The latter types also require less frequent deadheading than their taller counterparts. Zinnia Care Must-Knows Native to grassland areas, zinnias are tough plants that handle drought well. Even though they grow best in well-drained organic soil, zinnias are extremely tolerant of poor soils, including hard clay. No matter where your zinnias grow, they will benefit from a slow-release fertilizer and the occasional liquid feed to keep them blooming all season long. This is especially true in container settings filled with a soilless potting medium. Native Prairie Plants for Birds and Butterflies Because they come from prairie settings, zinnias prefer full sun. This environment nurtures the best bloom development. It also helps keep plants dry, which prevents common diseases such as powdery mildew—a condition most commonly seen as a white powder found on the plant's bottom leaves. While this pesky fungus probably won't kill the plants, it does diminish their beauty. The best control method for powdery mildew is prevention; look for resistant zinnia varieties and keep plenty of airflow around the plants. Leaf spot and blight are two more common diseases found in zinnias. Similar to powdery mildew, these conditions are caused by fungi. Control methods are the same: Remove any debris from the base of the plants to keep them clean. Many of these fungal diseases are found on the lower leaves of taller zinnia varieties used for cut flowers. Place shorter plants in front of taller zinnias to hide their naked stems. Saving zinnia seeds is a good way to start next year's plants. Because many zinnias are sold as mixes, you don't have to worry about seedlings being identical to the parent plant. As old flower heads dry, remove spent blooms and harvest the small arrowhead-shaped seeds from between each of the petals. Zinnia seeds can be started directly in the ground the following spring. How to Save Seeds from Your Garden to Plant Next Year More Varieties of Zinnia 'Benary's Giants Orange' Zinnia Graham Jimerson Zinnia 'Benary's Giants Orange' is an excellent cut flower with large, 4-inch-wide, double orange blooms. It grows 38 inches tall and 2 feet wide. 'Magellan Mix' Zinnia Peter Krumhardt Zinnia 'Magellan Mix' bears double blooms in a wide range of shades including red, pink, yellow, orange, and white. It grows 16 inches tall. 'Parasol Mix' Zinnia Peter Krumhardt Zinnia 'Parasol Mix' bears fully double, petal-filled flowers in a range of shades. It grows 12 inches tall. 'Cut and Come Again' Zinnia Peter Krumhardt Zinnia 'Cut and Come Again' is especially free flowering and bears double flowers in a range of bright colors on a 4-foot-tall plant. 'Profusion White' Zinnia Marty Baldwin Zinnia 'Profusion White' is an early-flowering selection with good disease resistance and white flowers all summer long. It grows 18 inches tall and 10 inches wide. 'Scarlet Flame' Zinnia King Au Zinnia 'Scarlet Flame' offers double red flowers on a vigorous, 42-inch-tall plant. 'Zahara Coral Rose' Zinnia Justin Hancock Zinnia 'Zahara Coral Rose' bears big flowers in a soft shade of pink. It's a disease-resistant, heat-loving plant that grows 18 inches tall and wide. 'Zahara Starlight Rose' Zinnia Justin Hancock Zinnia 'Zahara Starlight Rose' is a compact (to 18 inches tall and wide), award-winning selection with white flowers that have a distinct pink blush. It's very disease-resistant. 'Zahara White' Zinnia Justin Hancock Zinnia 'Zahara White' is a compact selection (to 18 inches tall and wide) with big white flowers. It's a disease-resistant, heat-loving variety. 'Zahara Yellow' Zinnia Justin Hancock Zinnia 'Zahara Yellow' produces big flowers in a bright, bold color on a disease-resistant, heat-loving plant that grows 18 inches tall and wide. Zinnia Companion Plants Spider Flower Matthew Benson It's amazing that the tall, dramatic spider flower is only an annual. Once temperatures warm up, it zooms to 4 feet or more, plants very quickly, and produces large balls of flowers with fascinating long seedpods that whirl out from it. Cut it for vases, but be aware that the flowers shatter easily after a few days. It typically self-seeds prolifically, so you only have to plant it once. Because it develops surprisingly large thorns, it's best to keep spider flower away from walkways. Plant established seedlings in spring after all danger of frost has passed. Cleome does best in moderately rich, well-drained soil. Be careful about fertilizing or you'll have extremely tall floppy plants. Group in clusters of 6 or more for best effect. French Marigold Doug Hetherington Just as you'd expect from something called French, these marigolds are the fancy ones. French marigolds tend to be frilly and some boast a distinctive "crested eye." They grow roughly 8-12 inches high with a chic, neat, little growth habit and elegant dark green foliage. They do best in full sun with moist, well-drained soil and will flower all summer long. They may reseed, coming back year after year, in spots where they're happy. Salvia There are few gardens that don't have at least one salvia growing in them. Whether you have sun or shade, a dry garden or lots of rainfall, there's an annual salvia that you'll find indispensable. All attract hummingbirds, especially the red ones, and are great picks for hot, dry sites where you want tons of color all season. Most salvias don't like cool weather, so plant them outdoors after all danger of frost has passed. Was this page helpful? Thanks for your feedback! Tell us why! Other Submit