Campanula rotundifolia 'Thumbell Blue'
Thumbell Blue Bellflower (Bluebells)
Details8” tall x 10-12” wide. Thumbell Blue Bluebells (Campanula rotundifolia 'Thumbell Blue') is a tidy, long-blooming perennial that thrives in partial shade. Thumbell Blue Bluebells blooms for many months with a profuse display of nodding blue flowers held on wiry stems. Campanula rotundifolia 'Thumbell Blue') is an improved selection of this Northern Hemisphere wildflower that blooms more heavily and has a more uniform growth habit. This is a ideal perennial for spots with morning sun. It thrives in full sun at higher elevation, mountain locations.
|Common Name||Thumbell Blue Bellflower (Bluebells)|
|Botanical Name||Campanula rotundifolia Thumbell Blue|
|Zones||4, 5, 6, 7, 8|
|Light Requirements||Full Sun, Morning Sun & Afternoon Shade|
|Mature Height||8" tall|
|Mature Spread||8-10" wide|
|Bloom Time||Late spring to summer|
|Ships As||Potted Plant|
|Planting Time||Spring / Summer, Fall|
|Soil Type||Clay Soil, Sandy Soil, Average Soil, Compost Enriched Garden Loam Soil, Low Fertility Soil, Well-Drained Soil|
|Amount of Rain||20 to 30", 30 to 40"|
|Advantages||Native, Extended Bloom Time (more than 4 weeks)|
|Ideal Region||Anywhere In The US, Suitable Above 7000 ft, Northeast, Midwest, Southwest, West, Pacific Northwest|
|Neonicotinoid-Free||Yes - Learn More|
|Ships to Hawaii, Alaska & Canada||No|
Tips On Growing Campanula (Bluebells)
Campanula (Bluebells) is a large genus of primarily Old World species known for their showy blue flowers.
Preferred growing conditions:
- Plant in most any soil including clay with full sun to partial shade conditions.
- Mulch with most common mulch materials. Mulching not needed in Eastern US.
- Keep regularly watered and don't let them get too dry.
- Fertilize lightly in fall with Yum Yum Mix/compost blend.
- Deadhead to prolong blooming. Leave some seeds to ripen to encourage plants to re-seed themselves.
- Cut back hard to just above the ground in mid-spring.
View more Planting Guides, or download our complete Planting Guide for tips on caring for your plants when you receive your order, as well as planting instructions for Perennials, Spring-Planted Bulbs, Fall-Planted Bulbs, Cacti & Succulents, Xeric Plants and more.
Plant Shipping: Buy now and we will ship your order at the ideal planting time for your region. Expected ship week will display on the cart at checkout after you enter your zip code. Spring-Planted Perennial and Bulb orders will ship from Feb 25 through mid-June, warmest zones first.
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Reviewed by 1 customer
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I planted two of these in a half sun, half shade spot last June. They did not thrive in the dry shade of Northern New Mexico. I watered them twice a week to help them establish, but no luck. They seemed very delicate, perhaps too delicate for our high altitude, cold winters, and dry summers. They did not poke back up this Spring.
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USDA Hardiness Planting Zones
To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.
- If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
- If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).
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