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Good for novice gardeners
Days to Maturity: 77 to 84
The Mix Double Larkspur are hardy, cool weather annuals offering summer interest. This blend of dwarf larkspurs flowers in densely packed spires of pink, mauve, rose, purple, grey, white, and shades of blue blooms. Borne in spike-like racemes, the flowers attract bees, bumblebees, and butterflies and make excellent cut flowers for fresh and dried arrangements.
The Mix Larkspur varieties have a compact habit of deeply cut almost ferny leaves and a fast rate of growth. Shown to best effect planted in drifts or groups in borders and containers.
Easily grown from seed, good for beginners, larkspurs prefer full sun and loose, moderately rich, consistently moist, well-drained soil. The plants are generally pest and disease free. Although larkspurs are low maintenance, deadheading spent flowers prolongs bloom and discourages unwanted self-seeding.
In northern climates, direct sow larkspur seed in the garden 2 weeks before the last frost date in spring, or start seed indoors 8 to 10 weeks prior to last frost and transplant into the garden after all threat of frost has passed. In southern climates, sow seed outdoors in fall.
The Mix Double Larkspur is short-lived but easily self-seed and can persist for years.
Height: 60-72 Inches
Bloom Season: Late Spring - Late Summer
Environment: Sun/Partial Shade
Soil Type: Rich/Average/Moist well-drained, pH 6.1-7.8
USDA Zones: 3-10
Sow Indoors: Spring (2-4 weeks before last frost)
Sow Outdoors: Spring/Fall
Seed Depth: 1/8 Inch
Germination Time: 10-17 Days
FAQ
01
When to Plant Double Larkspur Seeds
In northern climates, direct sow larkspur seed in the garden 2 weeks before the last frost date in spring, or start seed indoors 8 to 10 weeks prior to last frost and transplant into the garden after all threat of frost has passed. In southern climates, sow seed outdoors in fall.
02
Where to Plant Double Delphinium Seeds?
Plant double delphinium, in moist, rich, and well-draining soil that gets full sun exposure - though they can tolerate Partial Shade. One of the significant causes of double delphinium failure is planting in soil that is too dry.
03
How to Plant Double Delphinium Seeds?
Double delphinium seeds require light to germinate, so be careful not to cover them when planting.
Double Delphinium may benefit from a 12 hour soak in warm water, but it is not needed. Direct sow outdoors onto the surface of the soil and compress firmly, but do not cover. Double delphinium requires sunlight to germinate. If starting indoors, use tall, individual pots to transplant, as Double delphinium has long taproots.
04
How to Care for Double Delphinium?
Double delphinium is a short-lived perennial, tending to last about 1-2 years. This lifespan can be extended by removing flowers as soon as they fade. In non-tropical climates, you can cut your double delphinium down and mulch in order to give them longer life as well.
05
Is double Delphinium perennial?
Double delphinium is annual but easily self-seed and can persist for years, meaning they will come back each year. Winter hardy as far north as Zone 3, these Delphiniums do not need to be dug up and stored.
06
Does double Delphinium spread?
Plant them in a sunny location, spacing the plants about 12 to 18 inches apart. As double delphinium will spread when new seed is dropped, you might consider allowing three to four feet of space in the garden, so the area can fill out within a few years. Keep new plantings well-watered to help get them established.
07
Does Double Delphinium come back every year?
Double delphinium is annual . In the first year they put on root and foliage growth and flower, and set seed. Repeat the second year.
08
How many years will Double Delphinium bloom?
Double delphinium is easy to grow, it‘s flowers will bloom the same year they are planted
09
Where is the best place to plant Double Delphinium?
The best place to plant double delphinium is in a well-draining area that enjoys full sun to partial shade.
10
What pairs well with Double Delphinium?
Double delphinium is beautiful cottage garden plants, so they pair well with many perennials and shrubs in those types of gardens. Roses, rose mallow, tall garden phlox, hollyhock, peonies, ornamental grasses and foxgloves are just some of the plants that can be grouped with double delphinium in the garden.
11
When planting tall and linear plants, you may encounter the issue of them toppling over.
Use supports: Stick some sturdy poles, wooden stakes, or metal frames around the plants. Insert them into the soil and secure them to the main stems or significant branches for extra support.
Embrace plant grids: Set up or install plant grids around your plants and let the stems intertwine with the grid, adding stability and preventing them from flopping over.
Trim and prune: Keep up with regular pruning to encourage branching and side shoots, enhancing overall structure and stability.
Improve the soil: Ensure your soil is enriched with organic matter, maintaining proper moisture levels and good drainage, which promotes healthy growth and robust root development.
Wind protection: In windy areas, consider using windbreak netting or fences to reduce the impact of strong winds on your plants and shield them.