Fritillaria imperialis 'Rubra Maxima'
bulb corm tuber

Crown Imperial

Fritillaria imperialis 'Rubra Maxima'

Not currently listed at our partner nurseries.

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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 during growth, minimal in dormancy

Humidity

Prefers moderate humidity

Lifespan

Perennial

Native To

Southern Turkey to the Himalayas

Toxicity

All parts are poisonous if ingested

The Story

Plant Bio

Fritillaria imperialis 'Rubra Maxima' is known for its tall, striking flower spikes with large, red-orange blooms and is often used as a dramatic focal point in gardens. This cultivar is noted for its large, deep reddish-orange, bell-shaped flowers that hang in a whorl beneath a crown of leafy bracts. It is one of the tallest and most robust cultivars.

Bloom Period:

J
F
M
A
M
J
J
A
S
O
N
D
EarlyLate

Uses & Benefits:

Ornamental UsesFritillaria imperialis Rubra Maxima provides a dramatic vertical statement with its bold, red, bell-shaped flowers that brighten spring gardens.
Practical UsesIts naturalizing ability allows it to multiply over years, reducing the need for replanting.
Ecological BenefitsAttracts pollinators like bees and butterflies, supporting local ecosystems.

Marketplace

Where to Buy

We couldn't find this plant listed online right now.

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Planting

How to Grow

  1. Tuck bulbs 6 inches deep in well-draining soil in fall.
  2. Mist bulbs lightly after planting to maintain moisture.
  3. Position in full sun for optimal growth.
  4. Water regularly during active growth in spring.
  5. Fertilize with a balanced bulb food in early spring.
  6. Allow foliage to die back naturally after blooming.

Pro Tip

Plant bulbs in well-drained soil to prevent rot and ensure healthy blooms.

Keep It Thriving

Care Guide

Do

  • Water sparingly during dormancy 🌱
  • Provide full sun for best flowering
  • Mulch to retain moisture and suppress weeds

Don't

  • Avoid overwatering in winter ❌
  • Don’t disturb bulbs once planted
  • Never expose bulbs to standing water

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Fertilize
Plant
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Majestic focal point in perennial bordersStriking addition to rock gardensElegant accent in woodland settings

Companion Plants

Tulips Hyacinths Daffodils Alliums Crocuses

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 β€” 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 β€” 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.

Keep exploring

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.

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