Of horticultural origin, Delphinium × cultorum ‘Blue Bird’, commonly known as perennial larkspur, is a tall delphinium from the Pacific Giant group, selected for its long spikes of azure-blue flowers with a white centre. This bright colour combination distinguishes it from darker blue-violet cultivars with dark centres. Its strongly upright habit and abundant flowering bring height and structure to perennial borders.
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Packaging
GT9
To find out more about our packaging, please visit our young plants' page available from the website header.
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Available quantity 300 | Dispo à partir de Immédiat | Sold by min 10 |
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Characteristics of Delphinium × cultorum ‘Blue Bird’
Delphinium × cultorum ‘Blue Bird’ is an upright herbaceous perennial reaching approximately 1.6 m in height and 60 cm in width. Its crown produces a clump of large, deeply divided green leaves, above which long flower spikes emerge. The azure-blue flowers feature a strongly contrasting white centre, one of the main distinguishing features of this cultivar. The main flowering period occurs in early summer and may be followed by a later second flush if faded spikes are removed. The foliage dies back in winter and regrows in spring. Staking is recommended in windy locations or where plants carry particularly heavy flower spikes.
How to use Delphinium × cultorum ‘Blue Bird’?
Delphinium × cultorum ‘Blue Bird’ is mainly suited to the middle and back of perennial borders, where its tall inflorescences create strong vertical lines. Its azure-blue and white colouring combines easily with white, pink, yellow or purple-flowered perennials. It is particularly well suited to mixed borders, English-style gardens and summer-flowering perennial schemes. The flower spikes can also be used for cutting. Planting in groups of three to five plants increases the visual impact of the display. Growing in large containers is also possible, but requires a deep substrate, regular watering and a position sheltered from strong winds.
What are the best cultivation tips for Delphinium × cultorum ‘Blue Bird’?
Plant Delphinium × cultorum ‘Blue Bird’ in full sun or light partial shade, in deep, fertile, moisture-retentive and well-drained soil. Allow approximately 50 to 60 cm between plants. Before planting, cultivate the soil deeply and incorporate well-decomposed organic matter if required. Maintain regular moisture during active growth, particularly while flower spikes are developing, without keeping the soil permanently waterlogged. Compost or a suitable perennial fertiliser can be applied in spring. Stake the stems before they reach full height and remove faded flower spikes to encourage, depending on growing conditions, a second flowering period in late summer.
