Bellflower Plants: How To Grow Campanula Bellflowers


With their happy nodding heads, Campanula, or bellflower plants, are cheery perennial flowers. The plant is native to many regions where cool nights and moderate temperatures prevail, creating ideal conditions for growing bellflowers. Bellflowers will bloom heaviest in June and July but can delight you with flowers all the way into October in some areas. Master how to grow campanula bellflowers for long-lasting alpine native flowers that will enliven the landscape in borders and rock gardens.
Bellflower Plants
Campanula is a group of over 300 annual, biennial and perennial plants that span several sizes and colors. The primary characteristic is the upturned, open cup-shaped flowers in hues of pink and white but primarily lavender or light blue. The plants will spread over the seasons and the lower growing varieties make excellent ground cover. Most bellflowers begin blooming in July and keep on flowering until frost.
Conditions for Growing Bellflowers
Bellflowers perform best in USDA plant hardiness zones 4 and up but may grow in zone 3 with some protection. They are cold-hardy plants that are useful specimens in areas with hard winters. They require full sun for best flower production and well-drained soil with moderate moisture. Once established, bellflower plants can tolerate periods of drought. Soil conditions for growing bellflowers can be in any pH range, including highly acidic.
How to Grow Campanula Bellflowers
Campanula can grow from seeds or from rhizomes. The tiny seeds should go in prepared soil in spring after all danger of frost has passed. Make sure to keep seedlings moderately moist when caring for bellflowers. To plant rhizomes, sever them from the parent plant at a root node and bury the roots in the soil.
Bellflower Care
Caring for bellflowers does not require any expertise. As with most perennials, they are hardy plants that tolerate quite a lot of extreme weather and arid conditions. Bellflower care includes deadheading to promote more blooms and a longer-lasting display. You can also cut it down to the ground from late winter to early spring to rejuvenate the plant. Also, some varieties of bellflower have invasive potential and seed heads need to be removed before they spread.
Varieties of Bellflower Plants
There are many types of bellflowers. Some of the most common include:
- Bluebells - Bluebells are one of the most common Campanulas. These little woodland flowers are common across North America in highland fields.
- Scotch bluebell is native to the British Isles and may get 10 inches (25.5 cm.) tall.
- Dwarf bellflowers - Dwarf bellflower is useful in container gardens and tucked into rockery crevasses. It gets only 3 inches (7.5 cm.) tall but may spread 15 inches (38 cm.) wide.
- Carpathian harebell - Carpathian harebells may achieve 12 inches (30.5 cm.) and are one of the most cold-hardy specimens.
- American bellflower - American bellflower is a vigorous seeder and may become a nuisance plant but the 1-inch (2.5 cm.) wide, true-blue flowers are worth the extra effort to keep it in control.
Gardening tips, videos, info and more delivered right to your inbox!
Sign up for the Gardening Know How newsletter today and receive a free download of our most popular eBook "How to Grow Delicious Tomatoes."

Bonnie Grant is a professional landscaper with a Certification in Urban Gardening. She has been gardening and writing for 15 years. A former professional chef, she has a passion for edible landscaping.
-
15 Garden Trends To Avoid in 2024: Experts Warn Against These Outdated Designs
Garden trends come and go. We asked gardening experts to share the outdated trends that should be retired – and what you can do instead.
By Melanie Griffiths Last updated
-
How To Overwinter Ollas For Years Of Use: Get More From Irrigation Pots
If you overwinter ollas properly, you'll keep these unique watering pots from cracking. Here's how to protect them in erratic winter temperatures so they last longer.
By Mary Ellen Ellis Published
-
What Is Creeping Bellflower: Tips On Removing Creeping Bellflower In Gardens
Exactly what is the problem with creeping bellflower in gardens? This lovely little plant with the pretty purple blooms is actually a burly thug that can create absolute havoc for unsuspecting gardeners. Learn about removing creeping bellflowers here.
By Mary H. Dyer Last updated
-
Serbian Bellflower Care: Tips On Growing Serbian Bellflowers
Serbian bellflower plants are a great way to add long-lasting color to the home landscape. Serbian bellflower care is minimal and you'll find it is one of the easiest plants to grow. Read this article for more info.
By Becca Badgett Last updated
-
Campanula Propagation - How To Plant Campanula Seed
Since most are biennial, propagating campanula plants is often required in order to enjoy their blooms each year. Although they self-seed in some areas, this article will explain other methods of campanula propagation.
By Nikki Tilley Last updated