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USDA Plant Hardiness Zones

To help gardeners understand which plants will grow well for them, the entire USA has been segmented into ‘Plant Hardiness Zones’. Knowing your zone number is helpful when shopping for plants because:

  • Cold-area gardeners can avoid buying plants that simply won’t survive their lowest winter temperatures.
  • Warm-area gardeners can steer clear of plants that need a period of cold weather in order to bloom again.
Find your Plant Hardiness Zone here.

Bellflower Blue Waterfall

Blue Bellflower Blue Waterfall, Campanula poscharskyana, Trailing Bellflower



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Most orders ship within 48 hours or less. Learn More…

Trailing Blue Waterfall Bellflower cascades to 14 inches and blooms all summer. PP#13161 (Campanula poscharskyana)

Zones 3 - 9
Attract Butterflies
Attract Butterflies
Light Requirements
Full Sun
Full Sun
Half Sun / Half Shade
Half Sun / Half Shade
Mature Plant Size 4-6" tall, 16-20" wide
Bloom Time Early to late summer
Size Plant - 2.5" pot

Plant Information

Blue Waterfall is an exceptionally useful plant for use on an incline, retaining wall or even for a favorite big pot. This beauty sends out cascading stems up to 14 inches long, and creates a beautiful draped bank of blue flowers all summer long.

The Campanulas are favorite garden perennials, and close relatives of the Bluebells or Harbells, which are treasured wildflowers both in No. America and Europe.

Common Name Trailing Bellflower
Botanical Name Campanula poscharskyana
Zones 3, 4, 5, 6, 7, 8, 9
Light Requirements Full Sun, Half Sun / Half Shade
Flower Color Blue
Mature Height 4-6" tall
Estimated Mature Spread 16-20" wide
Bloom Time Early to late summer
Planting Depth Crown of plant should rest just at or above the soil surface after watering in.
Ships As Potted Plant
Foliage Color Green
Planting Time Spring / Summer
Soil Type Loamy Soil
Soil Moisture Average, Well Draining
Advantages Attract Butterflies, Groundcover
Neonicotinoid-Free Yes - Learn More
Ships to Hawaii, Alaska & Canada No


Most orders ship within 48 hours or less.

As soon as your order is placed you will receive an order confirmation email that will include your shipping information. We ship perennials and spring-planted bulbs at the proper planting time for your hardiness zone. Perennials and spring-planted bulb orders will arrive separately from seeds. If your order requires more than one shipment, there is no additional shipping charge. See our shipping information page for approximate ship dates and more detailed information. If you need express shipping or have any questions, please call Customer Service toll-free at (877) 309-7333 or contact us by email.

You will receive a second email the day your order ships telling you how it has been sent. Your order is scheduled to arrive at your door, fresh and ready to plant, usually within 3-5 days of leaving our warehouse, depending on your shipping address. We pack our plants to withstand up to 10 days in transit, in the event transit is delayed. We cannot guarantee arrival on a specific day. Please make sure to open your package upon receipt and follow the instructions included.

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Reviewsby PowerReviews


by PowerReviews
American MeadowsBellflower Blue Waterfall

(based on 3 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.

Reviewed by 3 customers

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Got eight plants - three died


from Mrytle Beach, SC

About Me Casual Hobbyist

Verified Reviewer


  • Pest Resistant


  • Short Bloom Time

Best Uses

    Comments about American Meadows Bellflower Blue Waterfall:

    The plants are very small and were some what dried out. All eight started growing but three died doing the summer.

    (2 of 2 customers found this review helpful)


    Plants were seedlings


    from Seminole, Florida

    About Me Avid Gardener


    • Vivid Colors


    • Failed to thrive
    • Slow Growth

    Best Uses

    • Containers

    Comments about American Meadows Bellflower Blue Waterfall:

    I grew this before and it was beautiful but these plants never really got going. They were too underdeveloped when they were sent. Am. Meadows did replace them once but those died also.

    (4 of 6 customers found this review helpful)


    You'll fall in love with Blue Waterfall!


    from Erick, OK

    About Me Avid Gardener

    Verified Reviewer


    • Accurate Instructions
    • Attractive
    • Healthy


    • Small In Size

    Best Uses

    • Outdoors
    • Patio

    Comments about American Meadows Bellflower Blue Waterfall:

    My plants just arrived, but I think they will do well in containers!

    • Primary use:
    • Personal

    Displaying reviews 1-3

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    Q & A

    Plant With These:

    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).

    Find Your Planting Zone:

    Enter your Zip Code to find your USDA Planting Zone

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