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Delgenius™ Kingsley Delphinium

Delphinium x 'Kingsley' PP34,675

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$3893
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Plant Size

Planting & Care

Where to Plant

  • Sunlight: This Delphinium performs best in full sun, requiring at least 6 to 8 hours of direct light daily. While it can handle some afternoon shade in hotter climates, too much shade results in floppy stems and fewer of those signature electric blue flowers.
  • Soil: Aim for rich, loamy soil that holds moisture but breathes well. If you have heavy clay, mix in organic compost to improve drainage, or use a raised bed to prevent "wet feet" which can lead to crown rot.

Watering Requirements

During the first growing season, water your Delphinium twice a week to keep the soil consistently moist like a wrung out sponge. Once established, the Delgenius™ series is more resilient, but you should still provide deep soakings during dry spells to prevent the flower spikes from wilting or shortening. Inconsistent watering often leads to mildew issues or stunted growth, so a layer of mulch around the base is helpful to maintain steady hydration levels.

Pruning Tips

These plants bloom on new wood, so you should cut the main flower spikes back to the foliage as soon as the first round of blooms fades in early summer. This "haircut" encourages the plant to send up a second flush of flowers for the autumn. In late fall after a hard frost, cut the entire plant down to two inches above the ground to keep the garden tidy and prevent pests from overwintering in the old stalks.

Fertilizer Needs

Apply a balanced, slow release fertilizer, such as a 10-10-10 formula, in early spring just as new growth emerges. Avoid using high nitrogen fertilizers late in the summer because this forces soft, sappy growth that is easily damaged by the first frost. Feeding your Delphinium provides the energy it needs to support those massive, heavy flower towers throughout the season.

Delivery and Shipping

Preorder Shipping Schedule

We ship your plants when it's safe to transport them to your zone. Dates are estimated and subject to weather delays.

Zone 3-4 Week of March 30th
Zone 5 Week of March 16th
Zone 6 Week of March 2nd
Zone 7-12 Week of February 23rd


Shipping Rates

Ships in 3-4 business days • Tracking provided • Weather protected

Under $50 $9.99
$50 - $99.99 $14.99
$100 - $149.99 $16.99
$150 - $198.99 $24.99
$199+ FREE

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  • Protects gardens from invasive pests and diseases

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Proven Winners® Delgenius™ Kingsley Delphinium

The Delgenius™ Kingsley Delphinium PP#34657 (Delphinium 'Delgenius Kingsley') is a spectacular perennial known for its massive spikes of soft lavender-blue blooms and reliable reblooming performance. Bred for both beauty and durability, this prolific bloomer stands out with its large, densely packed flowers that continue blooming from early summer through fall.

Backed by a frilly mound of deeply lobed leaves, the strong flowering stalks rise tall! Unlike traditional Delphiniums, Kingsley combines cold hardiness, heat tolerance, and exceptional branching, making it a gardener's dream for long-lasting color in borders, cottage gardens, and pollinator-friendly spaces.

Key Features of Delgenius™ Kingsley Delphinium

  • Gorgeous lavender-blue double blooms with full, densely packed flower spikes.
  • Extra-long bloom period from early summer through fall.
  • Highly branched habit for maximum flower production.
  • Cold hardy and heat tolerant, making it more adaptable than traditional Delphiniums.
  • Compact and sturdy, no staking required.
  • Attracts butterflies and pollinators but is resistant to deer and rabbits.
  • Grows up to 2 feet tall with a spread of 16-20 inches, perfect for small or large gardens.
  • Great for cut flower arrangements with long-lasting blooms.
  • Part of the Delgenius™ series, known for superior branching and reblooming ability.

How to Use Delgenius™ Kingsley Delphinium in the Landscape

Cottage Gardens & Mixed Borders

  • Plant Delgenius™ Kingsley in mixed perennial borders to create vertical interest and texture.

  • Pair with Roses, Daisies, and Salvia for a classic cottage garden look.

  • Use in mass plantings for a bold, colorful display throughout the growing season.

Pollinator-Friendly Gardens

  • Attract butterflies and bees with Kingsley's nectar-rich blooms.

  • Include in pollinator gardens as a mid-height anchor plant.

Containers & Patio Gardens

  • Its compact growth habit makes it ideal for large containers.

  • Place on patios and decks for up-close enjoyment of the blooms.

Cut Flower Gardens

  • Kingsley's tall, sturdy flower spikes are perfect for fresh bouquets.

  • Cut back after the first bloom to encourage additional flowering.

Delphinium Care & Maintenance

Delphinium are very easy to grow and hardy perennial plants!

Sun & Soil Requirements

  • Full sun to partial shade—plants bloom best with at least 6 hours of sunlight a day.

  • Prefers a rich, well-drained soil with consistent moisture.

Watering & Mulching

  • Keep soil evenly moist, especially during hot, dry periods.

  • Apply a 3-4 inch layer of mulch around the base to retain moisture and regulate temperature.

Fertilizing

  • Feed with a balanced, slow-release fertilizer in early spring and again after the first bloom to encourage continuous flowering.

Pruning & Deadheading

  • Deadhead spent blooms to promote reblooming.

  • After the first flush, cut back flower stalks to encourage a second bloom later in the season.

Winter Care

  • Delgenius™ Kingsley is a cold hardy perennial!

  • Apply mulch in late fall to protect the root zone during harsh winters.

Order Delgenius™ Kingsley Delphinium Today!

Bring continuous color and vertical beauty to your garden with the Proven Winners® Delgenius™ Kingsley Delphinium. Its long bloom season, compact habit, and superior adaptability make it a must-have perennial for any landscape.

Order now from Nature Hills Online Plant Nursery, and enjoy season-long blooms and reliable performance in your garden for years to come!

Frequently Asked Questions About Delgenius™ Kingsley Delphinium

How tall does Delgenius™ Kingsley Delphinium grow?

Kingsley grows around 2 feet tall and wide, making it perfect for back and mid-border accents.

When does Delgenius™ Kingsley bloom?

It blooms from early summer through fall, with a second bloom cycle after deadheading.

Is Delgenius™ Kingsley deer-resistant?

Yes! Delgenius™ Kingsley is resistant to deer and rabbits, making it a great choice for gardens with wildlife pressure.

Can Delgenius™ Kingsley be grown in containers?

Absolutely! Its compact habit and sturdy stems make it ideal for large containers on patios and decks.

How do I promote continuous blooming?

Deadhead spent blooms and cut back flower stalks after the first bloom to encourage a second flush of flowers.

Is Delgenius™ Kingsley drought-tolerant?

While it prefers consistent moisture, it is more heat and drought-tolerant than traditional Delphiniums once established.

Growing Zones 3-9

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