Delphinium Centurion Sky Blue F1 RHS Seeds

 

Delphinium Centurion Sky Blue F1 is a striking, hardy perennial that adds elegance and a splash of vibrant colour to any garden.

 

This impressive variety features tall spikes of soft, sky-blue flowers with a subtle white centre, making it a stunning focal point in borders or cottage gardens.

 

The name Delphinium comes from the Latin word delphinium, meaning "dolphin," due to the shape of the flower buds resembling the dorsal fin of a dolphin. Centurion Sky Blue F1 is a hybrid cultivar known for its uniform growth and abundant, long-lasting blooms, offering a refreshing touch of blue to any outdoor space.

 

This robust perennial grows to a height of 90 - 120 cm, making it ideal for planting at the back of borders or as part of a mixed perennial bed. Delphinium Centurion Sky Blue F1 thrives in well-drained, moderately fertile soil and prefers full sun to partial shade. It flowers from mid-summer to early autumn, attracting pollinators such as bees and butterflies, and providing a refreshing blue accent in the garden.

 

As part of the RHS Seed Scheme, Delphinium Centurion Sky Blue F1 offers high-quality seeds that ensure excellent germination and strong plant growth for reliable, stunning blooms.

 

Seed Qty: Approx. 20

 

Sow: January - March (indoors) or April - May (outdoors)

Germination: 14 - 21 days

Soil: Well-drained, moderately fertile soil; slightly acidic to neutral pH

Height: 90 - 120 cm

Flowering: June - September

Companion Plants: Lavender, Echinacea, Rudbeckia

Avoid Planting With: Heavy-feeding plants

 

Delphinium Centurion Sky Blue F1 is easy to grow with minimal maintenance once established. Regular watering during dry spells will ensure healthy growth, while deadheading spent flowers encourages continuous blooming. As a tall variety, staking may be required to support the flower spikes, particularly during periods of heavy rain or wind.

 

Sowing Instructions

 

Indoors: Sow seeds in trays or pots filled with moist, well-drained compost from January to March. Lightly cover the seeds with compost and maintain a temperature of 15-18°C. Once seedlings are large enough to handle, transplant them into individual pots and harden off before planting outdoors after the last frost.

 

Outdoors: Sow directly into prepared, weed-free soil from April to May. Lightly cover the seeds with soil and keep moist until germination occurs. Thin seedlings to the recommended spacing for healthy growth.

 

Delphinium Centurion Sky Blue F1 is perfect for adding height, colour, and structure to your garden. Its tall, elegant spikes of blue flowers make a dramatic statement, whether planted in borders, cutting gardens, or as part of a mixed perennial display.

 

RHS Seed Scheme Range