Tall Larkspur
Delphinium elatum
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Perennial
Height
60 inches
Width
24 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7
Water
Moderate
Humidity
Moderate
Lifespan
Perennial
Native To
Europe and Asia
Toxicity
Toxic to humans and pets if ingested
The Story
Plant Bio
Delphinium elatum is a tall, herbaceous perennial known for its striking spikes of blue flowers. This species features some of the tallest delphiniums and is often used in cottage gardens for its height and showy blooms.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
We couldn't find this plant listed online right now.
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Planting
How to Grow
- Choose a sunny spot with well-draining soil for planting.
- Tuck seeds 1 inch deep and space plants 18 inches apart in early spring.
- Mist cuttings lightly to maintain soil moisture during germination.
- Water regularly to keep soil consistently moist, especially during dry spells.
- Apply a balanced fertilizer every 4-6 weeks during the growing season.
- Divide mature plants every 2-3 years in early spring to promote health.
Pro Tip
Mulch around plants to retain moisture and suppress weeds, ensuring vibrant blooms.
Keep It Thriving
Care Guide
Do
- Water deeply once a week during dry periods 🌱
- Stake tall stems to prevent toppling
- Deadhead spent flowers to encourage more blooms
Don't
- Avoid overwatering to prevent root rot ❌
- Don't plant in shady areas; they need full sun
- Refrain from using high-nitrogen fertilizers which promote foliage over flowers
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| Prune | ||||||||||||
| Spring Cleanup | ||||||||||||
| Stake | ||||||||||||
| Winter Prep |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Tall Larkspur questions
What zones can Tall Larkspur grow in?
Tall Larkspur is hardy in USDA Zones 4–7. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Tall Larkspur deer resistant?
Not reliably. Deer may browse Tall Larkspur, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Tall Larkspur bloom?
Tall Larkspur typically blooms in early summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Tall Larkspur need full sun?
Tall Larkspur does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
More Delphinium to compare
Delphinium 'Double Blue'
Delphinium elatum 'Double Blue'
Larkspur
Delphinium elatum 'Magic Fountain Lavender'
Belladonna Delphinium
Delphinium x belladonna 'Dark Blue Dark Bee'
Faust Delphinium
Delphinium elatum 'Faust'
Pacific Giant Delphinium
Delphinium x belladonna 'Pacific Giant'
Summer Nights Larkspur
Delphinium elatum 'Summer Nights'
Keep exploring
Explore the genus
Collections featuring this plant
Hardy in your zone?
Grow Tall Larkspur with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
