Crocus sativus

saffron crocus, autumn crocus

Crocus sativus, commonly known as saffron crocus that adds vibrant colour and elegance to any garden. With its delicate purple blooms, this unique plant brings an exotic charm to outdoor.spaces

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Origin: Eastern Europe

Genus: Crocus

Species / Cultivar: sativus

Common Name: saffron crocus, autumn crocus

Synonym: Crocus autumnalis, Safran officinarum

Plant Biography

Crocus sativus, commonly known as the saffron crocus, is a remarkable flowering plant cherished for its vibrant purple petals and striking red stigmas.

This perennial is part of the iris family (Iridaceae) and thrives in sunny, well-drained conditions. It has been cultivated for over 3,000 years for its ornamental and practical value.

Notably sterile, Crocus sativus does not produce seeds and is propagated via corms. Each bloom typically produces three crimson stigmas, which are hand-harvested to create saffron.

Soil: Moist but Well Drained

Soil that allows water to drain at a moderate rate, without the water pooling.

Final Size: Small

Will stay small enough for a desk or shelf.

Water Requirement: Medium

Once it is established, this plant is likely to only require watering during drier periods.

Maintenance: Low

Minimal skill or input needed beyond the basics, a very independent plant.

Situation: Full Sun

Wants direct, unfiltered sunlight most of the day, such as a south facing position.

Eventual Height: 0.1 - 0.3m

The plant's ultimate height in typical growing conditions.

Hardiness: Half Hardy

Will need protection from frosts in order to survive winter, eg. with fleece jacket.

Habit: Deciduous

Sheds all its foliage annually, so for a period of the year it will be without foliage.

Lifecycle: Perennial

This plant is persistant and does not die off after flowering. It will return each season indefinitely, if provided with suitable growing conditions.

Size and Care Guidance

Choose a sunny, sheltered spot with well-draining soil, ideally sandy or loamy, to prevent waterlogging. Raised beds or containers work well if the soil is heavy. Water sparingly after planting, ensuring the soil remains lightly moist but not soggy. In autumn and winter, rainfall is typically sufficient.

Allow the green foliage to remain after flowering, as it feeds the corms for the next growing season. Trim it back only when it naturally withers in spring. Although hardy, Crocus sativus benefits from mulching with straw or compost in colder areas to protect against severe frosts.

Every 3-5 years, lift and divide the corms in midsummer once the foliage has died back, replanting them for continued blooms.