Blue Lace Delphinium (light blue, hint of lavender).Cobalt Dreams Delphinium (true, rich blue).These cultivars from the stellar New Millennium series of hybrid delphinium come in blue shades: New Millennium Delphiniums are also known for their excellent tolerance of summer heat, high humidity, and winter cold hardiness. They are also resistant to powdery mildew, root rot, blight, and rust. These plants are mainly Delphinium Elatum delphiniums (English Delphinium Hybrids) that are known for their tall, strong stems. The New Millennium Delphinium Series is one of the best choices for finding top-notch blue delphinium plants. Belladonna delphiniums tend to be mainly blue or white. Pacific hybrids are similar but tend to be a foot or two shorter than Elatum hybrids. Elatum group delphiniums tend to be the tallest and have some fantastic shades of blue as well as purple, pink, and white. These hybrids are grouped by series, with most series families of delphinium having more than one blue variety. Here are some of the best blue delphinium varieties. “Glamourous and aristocratic delphinium spires come in colors not often seen elsewhere in the garden – most notably blues, including ultramarine, celestial, and iridescent examples.” Martha’s Flowers: A Practical Guide to Growing, Gathering, and Enjoying, by Martha Stewart & Kevin Sharkey 25+ blue delphinium varieties and how to grow them This characteristic also makes them deer resistant. That said, these flowers are toxic and should be treated with care and kept away from pets and kids. Happily, delphiniums are the birthday flower of July, where they represent an open and loving heart. Blue delphinium is a dignified, nearly-royal flower that’s perfect to celebrate a joyous occasion. The meaning of the blue delphinium is grace. These hungry plants are usually fed in early spring with a slow-release fertilizer, plus supplemental feedings during the summer. Delphiniums thrive in soil with a neutral to slightly alkaline pH (which can be achieved by adding garden lime in marginal soil). Look for rich loamy soil that drains excess water out easily. Delphiniums usually produce one main show of flower spikes in early summer followed by intermittent blooms in late summer.ĭelphiniums bloom at their best in full sun planting locations with mild temperatures and good air circulation. These plants tend to live for about 5 years until the center of the root crown starts to deteriorate and the plant is best divided up and replanted. These towering beauties can be grown at home from blue delphinium seeds of most varieties, and can also generally be purchased locally as seedling or clone plants.īlue delphiniums are perennial plants that grow back every year from the roots. And, don't forget to take some time to bask in the tranquility of rich blue blooms.Blue delphiniums are the queens of the early-summer perennial border garden. If you're a fan of all things blue, plant these perennials to enjoy this wonderful color all season long. The lack of natural blue makes the addition of blue blooming perennials to the garden extra special. Blue also is the color of tranquility, calm, and grace. Blue is the most popular color in the world, yet there isn't a lot of natural blue in our landscape, except the sky, of course! Maybe people love it so much because it isn't as common in nature.
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