How to Sow and Plant
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Sow Delphinium Cultorum Giant Pacific seeds from April to July in moist, well-drained seed soil, covering them lightly with about ½ cm of soil. Space seeds sparingly to allow room for growth. Keep the soil consistently moist during germination, which may occur irregularly. Transplant seedlings from mid-May to their permanent spots with a planting distance of around 30 cm in groups. Early sowings under glass in March can flower the first year. Due to their height and heavy flower spikes, provide support by staking and gently tying the stems for a graceful display.
Delphinium Cultorum Giant Pacific thrives with sturdy support to handle its tall, heavy flower spikes. Place stakes around the outer stems and gently tie the plant to maintain an elegant, upright form. These perennials enjoy a sunny to partially shaded spot with well-drained soil enriched with organic matter. Regular watering is essential, especially during dry spells, to promote long-lasting blooms from June to July. Deadheading spent flowers encourages extended flowering, while mulching helps retain moisture and suppress weeds, ensuring a vibrant display of mixed blue, lilac, pink, and white flowers throughout summer.
Sow Delphinium seeds outdoors from April to July in moist, well-drained soil, covering lightly and keeping consistently damp for best germination. Thin seedlings to 30 cm apart to allow ample space for growth. For earlier blooms, start seeds indoors in March under glass. These tall perennials, reaching up to 150 cm, require sturdy stakes to support heavy flower spikes and maintain their elegant form. Enjoy vibrant mixed colors of blue, lilac, pink, and white throughout June and July, perfect for striking garden borders or fresh-cut arrangements in a vase.
What colors can I expect from the Delphinium Cultorum Giant Pacific mixed seeds?
These seeds produce delphiniums in a beautiful mix of blue, lilac, pink, and white shades, creating a vibrant and colorful display throughout the summer.
How tall do Delphinium Cultorum Giant Pacific plants grow?
These delphiniums typically reach about 150 cm in height, making them excellent for adding vertical interest to garden borders.
When and how should I sow these delphinium seeds?
Sow the seeds from April to July in moist, well-drained seed soil, covering them lightly with about ½ cm of soil. Keep the soil consistently moist during germination, which may happen irregularly. Early sowing under glass in March can even produce flowers in the first year.
Do Delphinium Cultorum Giant Pacific plants need support?
Yes, because of their tall stature and heavy flower spikes, it is recommended to provide sturdy support by staking and gently tying the stems to keep the plants upright and graceful.
What growing conditions do these delphiniums prefer?
They thrive in sunny to partially shaded locations with well-drained soil enriched with organic matter. Regular watering and mulching help maintain healthy, long-lasting blooms from June to July.
How can I extend the flowering period of these delphiniums?
Deadheading spent flowers encourages more blooms, helping to prolong the flowering period during the summer months.
