Campanula rotundifolia Thumbell Blue
Thumbell Blue 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 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. Spring-Planted Perennial and Bulb orders will ship from February 27-June 30, warmest zones first. Most plant orders will arrive within 3-4 days, or less, of leaving our greenhouses. This prompt delivery is provided without additional express charges.
Grass Plugs Will ship at planting time in spring 2017, beginning in late February.
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Q & A
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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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