Shop With Confidence: FREE Growing & Glowing Promise

Free Shipping on Orders $199+

Delgenius™ Shelby Delphinium

Delphinium 'Delgenius Shelby'

  • Reblooming Deep Blue Spires Need No Staking, Blooming Summer Through Fall
  • Cold Hardy: Thrives in Zones 3-9
  • Grows 1-2 ft Tall and Wide
  • Showy Blue, Purple Blooms From Late Spring to Late Summer
  • Deer Resistant, Drought Tolerant, Rabbit Resistant
Regular price $3890
Shipping calculated at checkout.
Out of stock
Plant not supported in Growing Zone.

Unfortunately, this item cannot be shipped to your state.

Shipping to your area may be delayed due to weather conditions.

Enter your ZIP code to check shipping availability.

Plant Size

Specifications

Plant specifications
Plant Characteristics Cold hardy, Compact/Dwarf, Flowering, Reblooming, Deer-resistant, Attracts pollinators, Container Friendly
Hardiness Zone 3a to 9b
Sunlight Full sun
Height 1-2 ft
Width 1-2 ft
Watering Needs Moderate
Preferred Soil Peaty
Growth Rate Moderate
Growth Habit Upright
Blooms In Spring, Summer
Flower Color Blue, Purple
Foliage Color Green
Pet Safety Toxic to pets
Suitable Space Outdoors
Botanical Name Delphinium 'Delgenius Shelby'
Species hybrid
Cultivar Delgenius Shelby
Class Ranunculales
Does Not Ship To AK, HI, ID, MT, PR

Frequently Asked Questions

What USDA hardiness zones is Delgenius™ Shelby Delphinium suitable for?

  • Delgenius™ Shelby Delphinium is cold hardy in USDA zones 3-9. This wide hardiness range, combined with superior heat tolerance, makes it adaptable to most climates across the continental United States. Plant in well-draining soil with full sun to partial shade for best results.

How tall and wide does Delgenius™ Shelby Delphinium grow at maturity?

  • Delgenius™ Shelby Delphinium reaches 24-30 inches tall with a compact, sturdy form that needs no staking. Its superior branching habit creates a full, well-rounded plant perfect for borders or containers. Shop this reblooming beauty at Nature Hills for continuous blooms all season long.

What are the planting zone requirements for Delgenius™ Shelby Delphinium in cold climates?

  • Delgenius™ Shelby Delphinium is cold hardy in USDA zones 3-9, thriving in even the coldest climates. This variety combines exceptional cold tolerance with heat resistance, making it widely adaptable. Plant in well-draining soil and provide full sun to partial shade for best performance.

Does Delgenius™ Shelby Delphinium need full sun or partial shade?

  • Delgenius™ Shelby Delphinium thrives in full sun to partial shade conditions. This heat-tolerant perennial performs best with at least 6 hours of morning sun daily, though it appreciates some afternoon shade in zones 7-9. Plant in well-draining soil for optimal blooms from early summer through fall.

How often should I water Delgenius™ Shelby Delphinium after planting?

  • Water newly planted Delgenius™ Shelby Delphinium deeply 2-3 times per week for the first month. Once established, this heat-tolerant perennial needs about 1 inch of water weekly. Check soil moisture regularly during hot spells to support continuous blooming through fall.

What are the care requirements for fertilizing Delgenius™ Shelby Delphinium?

  • Feed Delgenius™ Shelby Delphinium with balanced fertilizer in early spring when new growth emerges. Apply a second feeding after the first bloom cycle to support continuous flowering through fall. Avoid high-nitrogen fertilizers which can reduce blooming and weaken stems.