Gardening Flowers Annuals How to Plant and Grow Calibrachoa These tips on growing calibrachoa will help you keep these powerhouses of color thriving all season. By Viveka Neveln Viveka Neveln 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 May 3, 2024 Reviewed by Sylvia Duax Reviewed by Sylvia Duax Sylvia Duax has over 15 years of experience as a professional Horticulturist with expertise in: sustainable garden maintenance techniques; Southeastern U.S., especially in the mid-Atlantic regional gardening; native plants; wildlife gardening; small space, urban and container gardening and community engagement. Learn about BHG's Gardening Review Board In This Article View All In This Article Where to Plant Care Innovations Types Companion Plants FAQs Trending Videos Close this video player Photo: BHG / Evgeniya Vlasova With flowers that look like tiny petunias, calibrachoa (also called Million Bells) grows and blooms at an amazing rate. These extremely vigorous plants make for colorful, cascading accents in containers or hanging baskets, along walkways, and on garden walls. Calibrachoa has only been available in the retail plant world since the early 1990s. That's not long in plant years, especially with how far the plant has come since then. What started as a simple, single-color bloom has transformed into a whole new class of plant that people enjoy adding to their gardens year after year. Little trumpets of color, calibrachoa flowers create a fanfare day in and day out. Following developments in breeding, calibrachoa blooms come in a rainbow of options, including yellow stars, speckles, veined and segmented petals, and sometimes combinations of all of the above. For extra curb appeal, plant your calibrachoa in a sunny window box. Much of the work that's gone into calibrachoa breeding has been to make these plants day-neutral, meaning that they bloom all season, no matter how long or short the days are. Calibrachoa Overview Genus Name Calibrachoa Common Name Calibrachoa Plant Type Annual Light Sun Height 6 to 6 inches Width 12 to 14 inches Flower Color Blue, Orange, Pink, Purple, Red, White, Yellow Foliage Color Blue/Green, Chartreuse/Gold Season Features Fall Bloom, Summer Bloom Special Features Good for Containers Zones 10, 11, 9 Propagation Stem Cuttings Where to Plant Calibrachoa If you're looking to quickly fill a container or hanging basket, this plant is up to the task and does well mixed with other plants or tucked into the front of a border, where it can spill out onto sidewalks or patios. It doesn't typically get much taller than 4 inches. Its spread draws attention: Some plants can extend over 2 feet of ground in no time. Containers for Pollinators Calibrachoa Care Tips Calibrachoa plants bloom all summer long when their needs are met. Light Calibrachoas require from 6-8 hours of sun daily for the best blooms. They tolerate partial shade but produce fewer blooms. Soil and Water Use an all-purpose potting mix in containers or hanging baskets. Calibrachoas do best in containers with good drainage. When planted in beds outdoors, they benefit from well-draining soil that has been amended with nutrients. The 7 Best Potting Soils of 2024 Fertilizer Calibrachoas are heavy feeders and need regular applications of fertilizer to support their continuous bloom period. Add a slow-release fertilizer to the soil before planting, or apply a water-soluble fertilizer every two weeks. Since it's such a fast grower, calibrachoa requires a decent amount of food and will let you know if it needs sustenance. Sensitive to low amounts of nitrogen, calibrachoa turns yellow when it needs to be fed. So, if your plants look a little golden, it's time to give them a nice dose of fertilizer. Innovations Recently, some interesting work has been done with calibrachoa plants. An example is the creation of the petchoa, a cross between a petunia, a close relative, and the calibrachoa. This hybrid looks a lot like you might expect, considering its parents: a giant flowering plant with a mounded habit—the best of both worlds. Types of Calibrachoa Calibrachoa grows as an annual in most of the U.S., but it can be treated as a perennial in Zones 9-11. 'Cabaret Hot Pink' Calibrachoa Denny Schrock 'Cabaret Hot Pink' Calibrachoa bears multitudes of bright pink flowers on trailing stems to 8 inches. 'Cabaret Purple Glow' Calibrachoa Justin Hancock 'Cabaret Purple Glow' Calibrachoa trails to 8 inches and tolerates part shade. It grows 12 inches wide. 'Can-Can Mocha' Calibrachoa Graham Jimerson 'Can-Can Mocha' Calibrachoa offers creamy flowers with a chocolate-purple throat. It has a mounding-trailing habit and grows 15 inches tall and wide. 'Colorbust Chocolate' Calibrachoa Justin Hancock Calibrachoa 'Colorburst Chocolate' is a compact, mounding selection to 8 inches and offers burgundy blooms blushed with chocolate-brown. 'Million Bells Terra-Cotta' Calibrachoa Peter Krumhardt 'Million Bells Terra-Cotta' Calibrachoa offers orange flowers streaked with shades of red and gold on trailing stems to 8 inches. 'Million Bells Coral' Calibrachoa Matthew Benson 'Million Bells Coral' Calibrachoa offers lots of coral-pink flowers on trailing stems to 8 inches. 'MiniFamous Compact Dark Red' Calibrachoa Justin Hancock 'MiniFamous Compact Dark Red' Calibrachoa produces rich red flowers on a compact 8-inch trailing plant. 'MiniFamous Double Blue' Calibrachoa Justin Hancock 'MiniFamous Double Blue' Calibrachoa shows off fully double velvety-blue flowers on a trailing plant with 10-inch-long stems. 'MiniFamous Double Blush' Calibrachoa Justin Hancock 'MiniFamous Double Blush' Calibrachoa bears gorgeous double pink flowers on a vigorous trailing plant with 10-inch-long stems. 'Minifamous Double Pink' Calibrachoa BHG / Evgeniya Vlasova MiniFamous Double Pink Calibrachoa produces double pink flowers on a plant that trails to 10 inches. 'MiniFamous Double Yellow' Calibrachoa Justin Hancock 'MiniFamous Double Yellow' Calibrachoa produces intricate double flowers on a vigorous plant that trails to 10 inches. 'MiniFamous Sun Violet Veins' Calibrachoa Justin Hancock 'MiniFamous Sun Violet Veins' Calibrachoa bears soft blue flowers with violet-purple netting on a vigorous plant that trails to 10 inches. 'MiniFamous Tangerine' Calibrachoa BHG / Evgeniya Vlasova 'MiniFamous Tangerine' Calibrachoa offers soft yellow flowers with orange markings on a vigorous plant that trails to 8 inches. 'Superbells Blackberry Punch' Calibrachoa Justin Hancock Blooms of the 'Superbells Blackberry Punch' feature a deep raspberry-red outline with an almost black center. 'Superbells Blue' Calibrachoa Jason Wilde 'Superbells Blue' Calibrachoa is a floriferous variety with loads of violet-blue flowers on trailing 8-inch stems. 'Superbells Cherry Star' Calibrachoa Denny Schrock A Calibrachoa hybrid, 'Superbells Cherry Star' was one of the first to produce this bright yellow star pattern in the center. This particular series showcases a cherry-colored backdrop. 'Superbells Dreamsicle' Calibrachoa BHG / Evgeniya Vlasova 'Superbells Dreamsicle' Calibrachoa is a vigorous variety that shows off creamy orange flowers on a plant that trails to 3 feet or more. 'Superbells Lavender' Calibrachoa Justin Hancock 'Superbells Lavender 'Calibrachoa bears an abundance of lavender flowers on trailing 36-inch-long stems. 'Superbells Peach' Calibrachoa Justin Hancock 'Superbells Peach' Calibrachoa offers salmon-orange blooms with a darker throat. It holds up well to rainy weather and trails to 30 inches. 'Superbells Saffron' Calibrachoa Justin Hancock 'Superbells Saffron' Calibrachoa bears yellow flowers with a red-orange throat. It trails to 36 inches. 'Superbells Scarlet' Calibrachoa Justin Hancock 'Superbells Scarlet' Calibrachoa bears bold scarlet-red flowers on a vigorous plant that trails to 30 inches. 'Superbells Tequila Sunrise' Calibrachoa Justin Hancock 'Superbells Tequila Sunrise' Calibrachoa produces a plethora of orange flowers with yellow streaks. This vigorous variety can trail to 30 inches. 'Superbells Trailing Lilac Mist' Calibrachoa Justin Hancock 'Superbells Trailing Lilac Mist' Calibrachoa bears lots of cream flowers with dark blue veins and has better heat- and drought-tolerance than most. It trails to 3 feet. 'Superbells Yellow Chiffon' Calibrachoa Justin Hancock 'Superbells Yellow Chiffon' Calibrachoa produces soft yellow flowers on a floriferous plant that trails to 30 inches. 'Superbells Yellow' Calibrachoa Marty Baldwin 'Superbells Yellow' Calibrachoa features large, clear yellow flowers and a low, trailing habit. It trails to 30 inches. 'Voodoo' Calibrachoa Justin Hancock 'Voodoo' Calibrachoa produces plum flowers with yellow streaks and flecks. Each bloom is different. The plant trails to 30 inches or more, making it a good choice for hanging baskets and large mixed container gardens. Calibrachoa Companion Plants Angelonia BHG / Evgeniya Vlasova Angelonia is also called summer snapdragon, and once you get a good look at it, you'll know why. It has salvia-like flower spires that reach 1-2 feet tall, studded with fascinating snapdragon-like flowers with beautiful colorations in purple, white, or pink. It's the perfect plant for adding bright color to hot, sunny spaces. This tough plant blooms all summer long. While its varieties are beautiful, the sweetly scented selections offer a bonus. Most gardeners treat angelonia as an annual, but it's a tough perennial in Zones 9-10. If you have a bright, sunny spot indoors, you can keep it flowering all winter. Coral Bells BHG / Evgeniya Vlasova Exciting selections with incredible foliage patterns put coral bells on the map. Once enjoyed mainly for their spires of dainty reddish flowers, coralbells are also grown for the unusual mottling and veining of different-colored leaves. The low clumps of long-stemmed evergreen or semi-evergreen lobed foliage make coralbells fine groundcover plants. They enjoy humus-rich, moisture-retaining soil. Beware of heaving in areas with very cold winters. Zinnias Marty Baldwin Zinnias are vigorous, fast growing annual flowers that make beautiful additions to the garden. They vary from tall, stately plants suitable for borders to dwarf varieties that work well in containers. The flowers come in a range of colors, including red, pink, yellow, orange, and white. Plant them in full sun and provide consistent moisture. Frequently Asked Questions Do calibrachoas need to be cut back? Calibrachoas do a good job of "burying their dead"—meaning they grow so fast, they quickly cover over old blossoms. This is a plus for low-maintenance gardeners, as there's no need to manually remove dead growth. Which creatures eat calibrachoas in the garden? Calibrachoas are not classified as deer-resistant, but deer don’t usually munch on them. Neither do rabbits. However, tobacco budworms are a different story; they happily dine on buds and petals. They are large enough to pick off, but an application of Bacillus thuringiensis will also take care of them. Is calibrachoa toxic? Calibrachoa is not poisonous. It is a safe plant to have in your garden. Like most plants, ingesting any amount can cause stomach upset in children and pets. Was this page helpful? 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