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Canterbury Bells

Campanula medium var. calycanthema

Family: Campanulaceae (kam-pan-yew-LAY-see-ee) (Info)
Genus: Campanula (kam-PAN-yoo-luh) (Info)
Species: medium var. calycanthema



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


24-36 in. (60-90 cm)


9-12 in. (22-30 cm)


USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:

Full Sun



Bloom Color:


Medium Blue


White/Near White

Bloom Time:

Late Spring/Early Summer



Other details:

Unknown - Tell us

Soil pH requirements:

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:


Propagation Methods:

From seed; direct sow outdoors in fall

From seed; sow indoors before last frost

From seed; direct sow after last frost

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds


This plant has been said to grow in the following regions:


Atascadero, California

Chowchilla, California

Citrus Heights, California

Duarte, California

Elk Grove, California

Grass Valley, California

Los Angeles, California

San Anselmo, California

San Diego, California

Canon City, Colorado

Cumming, Georgia

Boise, Idaho

Libertyville, Illinois

Greenville, Indiana

Barbourville, Kentucky

Dennis Port, Massachusetts

Bellaire, Michigan

Mason, Michigan

Minneapolis, Minnesota

Young America, Minnesota

Salem, New Hampshire

Port Norris, New Jersey

North Tonawanda, New York

Utica, New York

Mooresville, North Carolina

Geneva, Ohio

Reynoldsburg, Ohio

Beaverton, Oregon

Portland, Oregon

Albion, Pennsylvania

Pittsburgh, Pennsylvania

Austin, Texas

Gilmer, Texas

Marion, Virginia

Kalama, Washington

Spokane, Washington

Chilton, Wisconsin

show all

Gardeners' Notes:


On Jul 17, 2011, predler from Missoula, MT wrote:

This plant is a biennial in this area of Montana (Zone 4b), and the comment to mark them is very important. I almost pulled them out, thinking they were a weed before they bloomed. They are gorgeous; mine bloom in dark purple, white and lavender. I planted them from seed several years ago. My only problem, especially this year, is they need to be staked or they will be on the ground after a heavy rain or wind.


On Jun 11, 2007, diwill from Wheeling, WV wrote:

Here in northern WV I tried to grow these from seed 2 years in a row with lousy results. Last fall, I dug up the one tiny plant that survived summer, put it in a pot in the basement for the winter (with occasional grow-light and water). I brought the sad looking remnant outside this Spring, sat it in full sun, and now I have a sprawling plant absolutely covered with large blooms. One side of the plant has cups AND saucers, the other side is producing only cups. Regardless, it is gorgeous and was worth the wait. Hopefully, will be able to harvest seeds and start over again next season.


On Jan 13, 2007, dannieaturner from New Richmond, WI wrote:

I bought this as a seedling a few years ago at a roadside nursery. It was very beautiful. Only grew that one summer but was worth the effort.


On Oct 5, 2006, darius from So.App.Mtns.
United States (Zone 5b) wrote:

Positive so far, but I only have seedlings I need to get in the ground before cold weather... 300 of them! I'm hoping to sell them as cut flowers next year. They were easy to germinate in trays although somewhat slow to grow to real leaves.


On Jul 25, 2006, phyllisjoy from Libertyville, IL wrote:

i planted pink canterbury bells for the first time this spring. the first plant bloomed beautifully - the second isn't quite as colorful (heat?) and the third on has a nice green base, but no sign of an flower stalks coming yet. will i be able to save the seed pods in the same way i save hollyhock seeds and plant them indoors next march?


On Jun 18, 2006, cartdog from Idaho Falls, ID wrote:

Although a biennial in Zone 4 it is worth the effort. Large bells (cups) with equally impressive saucers in both deep purple and white. My plants are very vigorous, with up to 20 prolific stems per plant. They make impressive cut flowers. These flowers seem more robust than the regular canterbury bells (without the saucer), as I have both currently in my garden.


On Aug 29, 2004, AnnaCount from Pinckney, MI (Zone 5b) wrote:

If you grow plants from seeds, as I did, make sure you clearly label and stake out the area where they are planted, or you'll end up with 'surprise plants' like I did!

For the longest time I remained puzzled about these plants, and the flower pods seemed to take forever to open. The stem was 3' tall and covered with leaves and mystery bloom pods, and my curiosity nearly killed me. When they did finally open in early June, the blooms were spectacular!

It is now the end of August, and there are still some blooms opening on these plants! And bells cut off at the stem and kept in a vase last for weeks, as long as the water is changed daily.


On Jul 13, 2003, frogsrus from San Diego, CA (Zone 10a) wrote:

Garden fairy, aka DD, evidently planted these in a cottage garden mix she threw about. Didn't know what it was. After 2 years I told it "bloom or be removed." Low and behold, 4 colors and all beautious. Query. Can I move them? The grand design did not include them where they are currently residing.


On Jul 9, 2003, PurplePansies from Deal, NJ (Zone 7a) wrote:

My experience with this plant was positive. Very easy to grow, (I'm in the Mid-Atlantic), didn't seem to mind the very acid soil near evergreen shrubs, seemed to thrive in it! Very pretty. They were shorter than I expected, but required no special care, (except staking some), no diseases or bugs, and they germinated quickly from seed.


On Feb 26, 2003, redsam1942 from Newberg, OR wrote:

I planted these with painted daisies (pyrethrum) and the effect was really pleasing. This is a great color spot to provide blues among all the pastels in most gardens.


On May 1, 2002, gardenwife from Newark, OH (Zone 5b) wrote:

Mine bloomed nicely last summer, but did not make it through our zone 5 winter.


On Jan 4, 2001, lantana from (Zone 7a) wrote:

Grows in Heat Zones 9-1.


On Nov 8, 2000, poppysue from Westbrook, ME (Zone 5a) wrote:

A classic cottage garden plant, this biennial bellflower has large showy blooms of pink, blue, purple, and white. There are varieties sold now that claim they can be grown as an annual but typically they are grown as a biennial. The first year they form a rosette of deep green foliage and in the second year they send up multiple stems with 3-inch cup shaped blooms. A native of southern Europe, they grow 2 4 feet tall and are hardy in zones 4-10.