Mertensia virginica

Virginia bluebells have rounded and gray-green leaves, borne on stems up to 24 in (60 cm) tall. They are petiolate at the bottom of the flower stem and sessile at the top.
Flowerbuds are pink. Flowers have five petals fused into a tube, five stamens, and a central pistil (carpel). They are borne in mid-spring in nodding spiral-shaped cymes at the end of arched stems. Flowers are usually blue, but white or pink flowers occur rarely.
The stamens and stigma are spaced too far apart for self-fertilization. The flower can be pollinated by bumblebees but, due to its funnel shape bumblebees must hover, making the bumblebee a rare pollinator. Butterflies are the most common pollinators because they can easily perch on the edges and still enjoy the nectar.
In early summer, each fertilized flower produces four seeds within wrinkled nuts, and the plant goes dormant till the next spring.
Plants are hardy to hardiness zone 3: −40 °C (−40 °F).
In cultivation, M. virginica has gained the Royal Horticultural Society's Award of Garden Merit.
Photos

 

Virginia Bluebells (Mertensia virginica) in Ohio




 

Leaves before blooming




 

Flower buds




 

Typical blue-flowered form at the botanical gardens in Berlin, Germany




 

A pink-flowered form




 

A white-flowered form




 

Fruits




 

Woods carpeted in bluebells




 

A bumblebee hanging from a bluebell

3-6 hours of sun per day, with protection from intense mid-day sun

Water moderately, allowing the top 3cm to dry out between watering.

Mertensia Virginica

Mertensia virginica

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