Fritillaria imperialis var. inodora-purpurea is an unusual form of the magnificent Crown Imperial, producing tall stems topped with a spectacular ring of nodding orange flowers. One of its most interesting characteristics is the absence of the strong, distinctive scent normally associated with Fritillaria imperialis.

Growing to around 100cm tall, this impressive spring-flowering bulb creates a strong architectural feature in borders. The upright stems carry whorls of narrow green leaves before finishing with a cluster of large, bell-shaped orange flowers beneath a leafy crown.

• Botanical name: Fritillaria imperialis var. inodora-purpurea
• Common name: Crown Imperial
• Plant type: Bulbous herbaceous perennial
• Flower colour: Orange
• Flowering time: April-May
• Height: Approximately 100cm
• Spread: Approximately 25-30cm
• Foliage: Narrow green leaves
• Position: Full sun or light partial shade
• Soil: Fertile, well-drained soil
• Ideal for: Borders, cottage gardens and architectural planting

About Fritillaria imperialis var. inodora-purpurea

Crown Imperials are instantly recognisable when in flower. Strong, upright stems rise above surrounding spring plants, carrying a dramatic cluster of downward-facing flowers. Above these sits a tuft of narrow leaves, creating the characteristic crown that gives the plant its common name.

Var. inodora-purpurea produces particularly attractive rich orange flowers. Its height and strong vertical habit make it an excellent choice for introducing structure amongst lower-growing spring bulbs such as tulips, narcissi and muscari.

A Crown Imperial Without the Usual Strong Scent

Fritillaria imperialis is well known for the unusual musky scent produced by its bulbs and plants. Var. inodora-purpurea is notable for lacking the characteristic strong Fritillaria smell, making it an interesting alternative for gardeners who enjoy the spectacular appearance of Crown Imperials but would prefer a less strongly scented form.

Where to Grow Crown Imperials

Plant Fritillaria imperialis var. inodora-purpurea in a sunny, sheltered border. Light partial shade is also suitable, but good light encourages sturdy stems and reliable flowering. A position protected from strong winds is useful because mature flower stems can reach around a metre in height.

The soil should be fertile but, most importantly, well drained. Crown Imperial bulbs dislike prolonged wet conditions, particularly during dormancy. Heavy clay soils should be improved with grit and organic matter before planting.

How to Plant Fritillaria imperialis Bulbs

Plant the bulbs in autumn, approximately 15-20cm deep and around 25-30cm apart. Crown Imperial bulbs have a natural hollow in their centre. Planting each bulb at a slight angle or on its side can help prevent water from collecting in this hollow during wet weather.

Handle the large bulbs carefully and plant them promptly after receiving them. Once established, they are generally best left undisturbed, allowing the bulbs to develop into increasingly impressive plants.

Height and Spread

Fritillaria imperialis var. inodora-purpurea reaches approximately 100cm tall with a spread of around 25-30cm. Its relatively narrow, upright growth makes it easy to incorporate into mixed borders without requiring a large amount of ground space.

After Flowering

Allow the foliage and flower stems to die back naturally after flowering. The leaves continue photosynthesising after the flowers fade, replenishing the bulb and helping it produce a strong display the following spring.

Once the foliage has completely yellowed it can be removed. The bulb then remains dormant underground through summer and should not be subjected to excessive moisture while dormant.

Why Grow Fritillaria imperialis var. inodora-purpurea?

• Spectacular rich orange flowers
• Unusual form without the typical strong Crown Imperial scent
• Impressive architectural habit
• Grows to approximately 100cm tall
• Spread of around 25-30cm
• Excellent for adding height to spring borders
• Perennial bulb that can return year after year
• Pairs beautifully with tulips and other spring bulbs

Frequently Asked Questions

When does Fritillaria imperialis var. inodora-purpurea flower?
It normally flowers during April and into May, depending on local conditions and the spring weather.

How tall does it grow?
Established plants reach approximately 100cm tall.

What is its spread?
Expect an established plant to occupy approximately 25-30cm of space.

Does Fritillaria inodora-purpurea smell?
This form is notable for not producing the characteristic strong scent normally associated with Crown Imperials.

Where should I plant the bulbs?
Choose a sunny or lightly shaded, preferably sheltered position with fertile, well-drained soil.

How deep should Crown Imperial bulbs be planted?
Plant approximately 15-20cm deep. Positioning the bulb slightly on its side can help prevent water from sitting in its natural central hollow.

Is Fritillaria imperialis var. inodora-purpurea perennial?
Yes. It is a perennial bulb and, given suitable drainage and growing conditions, can return to flower each spring.

With its towering stems, superb orange flowers and lack of the usual strong Crown Imperial scent, Fritillaria imperialis var. inodora-purpurea is an unusual and imposing spring bulb for adding height and drama to the garden.