Tall spikes of cobalt-blue flowers with a white bee are produced over a bushy mound of deeply cut leaves. Flowers May to July. Height 1.5m. Spread 60cm. Full sun. Fertile, moist, well-drained soil. Hardy. Attracts bees.
Delphinium ‘Cobalt Dreams’ is a majestic perennial prized for its tall spires of cobalt-blue flowers with striking white bees. Towering up to 1.5 metres, this cottage garden classic creates a dramatic vertical accent in beds and borders. With the right care, Delphinium ‘Cobalt Dreams’ will reward you with a dazzling display from May to July.
PLANTING and AFTERCARE GUIDE
Best Planting Time
Spring: The ideal time to plant Delphinium ‘Cobalt Dreams’ is in spring when the ground is workable and starting to warm. Early planting encourages strong root development before the active growing season.
Early Autumn: You can also plant Delphinium ‘Cobalt Dreams’ in early autumn. This gives the roots a chance to establish before the plant goes dormant.
Site Selection
Sunlight: Delphinium ‘Cobalt Dreams’ thrives in full sun. Select a spot that receives a minimum of six hours of sunlight per day to support tall, sturdy flower spikes.
Soil: Choose fertile, moist, and well-drained soil. Incorporate compost or well-rotted manure to enrich the planting area and improve drainage.
Planting Instructions
Prepare the Hole: Dig a hole twice the width and the same depth as the root ball of your Delphinium ‘Cobalt Dreams’.
Soil Enrichment: Mix organic matter into the excavated soil to promote fertility and drainage.
Positioning: Place the plant in the hole, keeping the crown just at soil level. Backfill with the amended soil and firm gently.
Watering: Water thoroughly after planting to settle the soil and support initial root growth.
Watering Requirements
Active Season: Water Delphinium ‘Cobalt Dreams’ regularly during dry periods. Keep the soil consistently moist but never waterlogged.
Dormancy: Reduce watering in colder months, only watering if the soil becomes very dry.
Feeding
Spring Boost: In early spring, apply a balanced, slow-release fertiliser to fuel early growth.
Mid-Season Feed: Supplement with a potassium-rich feed during flowering to encourage robust blooms and healthy foliage.
Pruning
Deadheading: Remove faded flower spikes to prolong blooming and encourage a possible second flush.
Autumn Cut-Back: After flowering ends, cut Delphinium ‘Cobalt Dreams’ back to ground level to prepare it for the next season.
Mulching
Spring Mulch: Apply a thick layer of organic mulch in spring to retain moisture, suppress weeds, and improve soil structure.
Winter Mulch: Reapply mulch in late autumn to protect the crown from extreme cold and temperature fluctuations.
Supporting the Plant
Staking: Delphinium ‘Cobalt Dreams’ benefits from staking due to its tall flower spikes. Use plant supports early in the season to avoid damage from wind or heavy blooms.
Final Tips
Delphinium ‘Cobalt Dreams’ is a show-stopping addition to cottage gardens, mixed borders, and floral displays. It pairs beautifully with roses, lupins, and foxgloves. To maximise its impact and longevity, provide full sun, fertile soil, and adequate support. With these tips, your Delphinium will become a summer highlight year after year. Embrace its charm and elegance, and enjoy the pollinator-friendly blooms that make ‘Cobalt Dreams’ a firm garden favourite.
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