Giant Imperial Larkspur
Consolida ajacis 'Giant Imperial Dark Blue'
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Annual
Height
42 inches
Width
12 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7
Water
Moderate
Humidity
Average
Lifespan
Annual
Native To
Mediterranean region
Toxicity
All parts are highly toxic if ingested
The Story
Plant Bio
Giant Imperial Dark Blue is a tall annual with a robust growth habit and attractive deep blue flowers. Notable for its large flower spikes and striking dark blue color, making it a favorite for cottage gardens.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck seeds into well-draining soil in early spring for best germination.
- Mist cuttings gently to maintain moisture and encourage root growth.
- Water regularly to keep soil moist but not waterlogged.
- Fertilize monthly with a balanced liquid fertilizer during the growing season.
- Pinch back early growth to promote bushier plants and more flowers.
- Deadhead spent flowers to extend blooming period.
Pro Tip
Sow seeds directly in the garden for natural reseeding and vibrant displays.
Keep It Thriving
Care Guide
Do
- Water consistently during dry spells 🌱
- Deadhead to encourage continuous flowering
- Fertilize monthly during active growth
Don't
- Avoid overwatering to prevent root rot ❌
- Do not fertilize late in the season
- Avoid heavy pruning in late fall
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Fertilize | ||||||||||||
| Harvest | ||||||||||||
| Plant | ||||||||||||
| Stake |
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
Giant Imperial Larkspur questions
What zones can Giant Imperial Larkspur grow in?
Giant Imperial Larkspur is hardy in USDA Zones 4, 5, 6, 7, 10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Giant Imperial Larkspur deer resistant?
Yes — Giant Imperial Larkspur is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Giant Imperial Larkspur bloom?
Giant Imperial 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 Giant Imperial Larkspur need full sun?
Giant Imperial Larkspur does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
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Grow Giant Imperial 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.
