The Story
Plant Bio
Fritillaria imperialis, commonly known as crown imperial, is a bulbous perennial that features tufted leaves and tall flower stalks adorned with bell-shaped flowers.
This species is known for its distinctive crown of flowers atop a tall stalk and its unique flower structure.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Bulb Corm Tuber
Height
40 inches
Width
12 inches
Light
Full Sun, Partial Sun
Zones
5, 6, 7, 8
Water
Moderate
Humidity
Prefers dry to moderate humidity
Lifespan
Perennial
Native To
Turkey to the Himalayas
Toxicity
Toxic to pets and humans if ingested
Planting
How to Grow
- Select a well-draining soil with sandy or loamy texture.
- Plant bulbs 6-8 inches deep in the fall, pointed end up.
- Water thoroughly after planting to settle soil around bulbs.
- Mulch with organic material to retain moisture and regulate temperature.
- Ensure the plant receives full sun for optimal growth.
- Water regularly during the growing season, avoiding waterlogging.
Pro Tip
Plant bulbs in well-drained soil and avoid overwatering to prevent rot.
Keep It Thriving
Care Guide
Do
- Water during dry spells in the growing season 🌱
- Apply a balanced fertilizer in early spring
- Provide full sun for vigorous blooming
- Mulch to keep roots cool and moist
Don't
- Don’t plant in poorly drained soil ❌
- Avoid excessive watering in summer ❌
- Don’t disturb bulbs once established ❌
- Refrain from fertilizing late in the season ❌
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| Plant | ||||||||||||
| Spring Cleanup |
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
Crown Imperial questions
What zones can Crown Imperial grow in?
Crown Imperial is hardy in USDA Zones 5–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Crown Imperial deer resistant?
Yes — Crown Imperial is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Crown Imperial bloom?
Crown Imperial typically blooms in mid-spring through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Crown Imperial need full sun?
Crown Imperial does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
More Fritillaria to compare
Snake's Head Fritillary
Fritillaria meleagris
Persian Fritillary
Fritillaria persica
Thunberg's fritillary
Fritillaria thunbergii
Red Crown Imperial
Fritillaria imperialis 'Red Crown Imperial'
Yellow Crown Imperial
Fritillaria imperialis 'Maxima Lutea'
Adiyaman Persian Fritillary
Fritillaria persica 'Adiyaman'
Keep exploring
Explore the genus
Hardy in your zone?
Grow Crown Imperial 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.