Light Needs
Mature Height
Mature Spread
Growing Zones
Shelby Bee Delphinium is an excellent addition to the cottage or cutting garden. The pale lavender flower spikes are stronger and less prone to needing staking, even while in full bloom. While some delphiniums fade and slow growth in hot or humid weather, Shelby Bee tolerates it with ease and goes right on producing flowers until the first frost. This delphinium stays compact and requires far less pinching and pruning to have multiple flower branches. Delgenius™ Delphiniums are bred to branch naturally and densely.
Delphiniums are superb in the pollinator or cutting garden but shine when planted in a mixed perennial border alongside ornamental grasses, hollyhocks, and sunflowers. Deer rarely browse delphiniums, and rabbits are not a bother either. As the new growth begins in spring, protection from slugs and snails may be needed.
Shelby Bee Delphinium Care
Plant delphiniums in a full-sun location with well-drained but moist soil. Using a mulch of organic compost or arborist chips will help to cool the soil and make it more moisture retentive. Delphinium likes to have cool roots and does well in garden beds with a groundcover for protection. Fertilize with a granular, slow-release fertilizer in the spring. Formulations for roses and tomatoes are perfect for heavy-blooming plants like delphiniums. Allow for one inch of water a week, either via natural rain or supplemental irrigation.
Delphiniums are very low maintenance, even though they have large, blowsy flowers. Deadhead spent flower spikes to keep the plant producing more blooms. Prune back all the spent top growth late in the winter or early spring to make way for the new season’s foliage. Repot container-grown plants in the spring to refresh the soil and encourage vigorous growth. Delphiniums growing in containers will require fertilizing once a month with a diluted liquid feed.
Shelby Bee Delphinium Spacing
Shelby Bee Delphinium is much smaller than previous varieties and can be planted in even the smallest garden bed. The mature height and spread are 18-24 inches. Space plants about 18 inches apart on center when planting en masse. Shelby Bee will require at least a 12-inch diameter pot for container growing.
Shelby Bee Delphinium Plant Facts
Growing Conditions
- Hardiness ZonesGrowing Zones
- USDA Zones 3 to 8 (perennial); grown as an annual elsewhere (outdoors year-round); grown indoors elsewhere (outdoors year-round); grown in containers elsewhere (grown as a seasonal crop)
- Sun Exposure
- Full Sun (6+ Hours Direct Sun)
- Mature Height
- 1-2 Feet
- Mature Spread
- 1-2 Feet
- Growth Habit
- , Mounded, Upright
- Water Needs
- Average
Flowers & Foliage
- Flower Colors
- , Purple
- Flower Description
- Lavender
- Bloom Time
- Early to Mid-Summer
- Foliage Color
- , Green
- Foliage Description
- Green
- Foliage Type
- , Herbaceous
- Seasonal Interest
- , Summer Flowering, Fall Flowering
Garden Benefits
Plant Overview
- Common Name
- Shelby Bee Delphinium
- Also Known As
- Shelby Bee Delphinium
- Botanical Name
- Delphinium Delgenius 'Shelby'
- Plant Type
- Perennial
Simple Plant Spacing Calculator
Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on type of plant, time of year, last pruning & many other factors.
Also Known As:
Quart
Plant Age:
~ 6 months - 1 year
Plant Size:
~ 4"-8"
Pot Size:
~ 4.75"H x 4.5"W
Volume:
1.50 quarts
Also Known As:
2.5 Quart Pot
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 8"-12"
Pot Size:
~ 6.5"H x 6.5"W
Volume:
2.20-2.30 quarts
Also Known As:
#1 Container
1 Gallon
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 10"-14"
Pot Size:
~ 7"H x 7.75"W
Volume:
2.26-3.73 quarts
Also Known As:
#2 Container
2 Gallon
Plant Age:
~ 1.5 - 3 years old
Plant Size:
~ 12"-18"
Pot Size:
~ 9.5"H x 9.5"W
Volume:
1.19-1.76 gallons
Also Known As:
#3 Container
3 Gallon
Plant Age:
~ 2 - 4 years old
Plant Size:
~ 12"-30"
Pot Size:
~9.5"H x 11"W
Volume:
2.32-2.76 gallons
Also Known As:
#5 Container
5 Gallon
Plant Age:
~3-4 years old
Plant Size:
~ 20" - 60"
Pot Size:
~11" H x 10 1/2” W
Volume:
3.5 - 4 gallons
We stand behind our plants with industry-leading guarantees to give you peace of mind.
We want your plants to arrive in great condition! If you notice any issues upon delivery, contact us within 3 days.
Starting January 1, 2026 all bushes, perennials & trees purchased come with an extended 1-year warranty for added confidence. If your plant dies due to a health issue within a year, we’ll make it right.
Plants that are currently in stock typically ship within 2-7 business days after your order is placed.
Plant Addicts ships to the lower 48 states within the U.S. Unfortunately, we do not currently ship to Alaska, Hawaii, or internationally.
This plant cannot be shipped to the following states: AK, HI. These restrictions apply only to this specific plant due to agricultural regulations or other limitations. Other plants may still be available for shipping to these states.
If you have any questions about shipping restrictions, feel free to reach out to our team!