Saturday, December 9, 2023

Bell Flowers – All You Need To Know About

With their happy, star-like flowers, the variety of Bell flowers available can fit any gardener’s needs. Ranging from short to tall, and featuring almost every color of the rainbow, these cheery flowers are a great fit for your garden or cut to display in your home.

They require a Full Sun / Partial Shade Sun and a well-drained soil.

Zones: 3 – 8 and a Height of about 0.25 – 4 feet tall and blooms better during Early summer – Early fall. They have a unique feature of being very good for cut flowers.

Bell flowers grow best in loose, well-draining soil with a pH range between 6-8. By creating a planting mixture that is 50% soil and 50% compost you will ensure healthy, long-living plants that will produce an abundance of beautiful flowers for years.

Light Requirements

Bell flowers will tolerate a little shade in the afternoon, but prefer to grow in a location that is in full sun. The more direct sunlight the plant receives, the more blooms it will produce.

Temperature and Humidity Requirements

Warm days and cool nights are ideal for Bell flowers. These plants won’t grow well in regions with hot, tropical climates nor in regions that dip below 50 degrees at night. Bell flowers will develop powdery mildew in humid climates and soils that are kept overly moist.


Allow soil to feel dry to the touch between waterings. Soil should not be allowed to dry out completely and should never be soggy. Always apply water at soil level to prevent plant foliage from getting wet. Water early in the morning so the rising sun can quickly dry off any moisture that may have gotten on plant stems or foliage.

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Apply a balanced fertilizer, like a 10- 10-10, once in the spring and again in mid-summer. Water plants thoroughly after fertilizing. A side dressing of organic compost can be applied to plants twice a year instead of non-organic fertilizer to keep the plants well fed and growing strong.


Place a 3-inch layer of organic mulch, like straw or compost, on the soil surrounding the Bell flowers; keep mulch away from plant stems. Mulch will keep soil cool, help soil retain moisture and prevent weed growth. As the organic mulch decomposes it will also provide nutrients to the plants.


Prune (also called deadheading) as soon as blooms begin to fade. Snip off spent blooms with sharp pruning shears to encourage the plant to re-bloom.

Powdery Mildew

Symptoms of powdery mildew (which is a common disease for Bell flowers) include a fuzzy white substance on leaves, wilted and/or discolored leaves that drop from the plant. Get rid of powdery mildew by pruning off all parts of affected plants and discarding them, along with any fallen debris. Dip pruning shear blades in a mild bleach water solution, then prune remaining plants to increase air circulation and prevent powdery mildew from returning.

Pest Control

Aphids, snails and slugs are attracted to Bell flowers. Inspect plants for distorted growth or yellowing leaves that are initial signs of an aphid infestation. Spray plants (focus on the underside of leaves) with insecticidal soap to kill aphids. Slime trails and ragged holes in the foliage indicate snails and slugs are feasting on campanula. Handpick the pests off of plants or place a snail trap nearby.


Cut plants back to 3 inches in late fall. Add a 3 inch layer of organic mulch on top of plants in cold climates, in mild climates an over-wintering mulch layer is not needed.

Propagation Tips

Dig up and divide plants every 3 years to prevent overcrowding. Early spring is the best time of year to divide and transplant Bell flowers.

Read Also: Balloon Flowers – All You Need to Know About

Campanula Plant Profile

Name:Campanula pronounced (kam-PAN-yew-luh)
Bloom Color:Blue bell flower, purple, pink, yellow bell flower or white
Bloom Time:Bell flower bloom in the Summer time
Length of Bloom:Around 3 to 4 weeks or more
Height:Varies by species
Spread:Varies by species
Garden Uses:Ideal for ground covers, mixed borders, containers, rock gardens; can be planted on slopes, flower beds (towards the back)
Soil:Average, well-drained soil
Light:Thrives in Full Sun to light shade
Propagation:Sow seed in the Spring; for cultivars, take stem cuttings or divide in spring or fall
USDA Plant Hardiness Zones:Zones 3 to 9

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Benadine Nonye is an agricultural consultant and a writer with over 12 years of professional experience in the agriculture industry. - National Diploma in Agricultural Technology - Bachelor's Degree in Agricultural Science - Master's Degree in Science Education... Visit My Websites On: 1. - Your Comprehensive Practical Agricultural Knowledge and Farmer’s Guide Website! 2. - For Proper Waste Management and Recycling Practices. Join Me On: Twitter: @benadinenonye - Instagram: benadinenonye - LinkedIn: benadinenonye - YouTube: Agric4Profits TV - Pinterest: BenadineNonye4u - Facebook: BenadineNonye

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