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Crocus 'Autumn Flowering 'Sativus'

Saffron

Crocus sativus, commonly known as saffron crocus, reaches 4 to 6 inches tall, featuring lilac-purple blooms with three vivid red stigmas, which are harvested as the prized spice saffron. This autumn-blooming perennial thrives in full sun to part shade, preferring gritty, well-drained soil and dry summers for optimal growth.

Ideal for herb gardens, rock gardens, and borders, it is drought-tolerant and requires careful harvesting, as it takes 75,000 flowers to produce one pound of saffron.

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When should I plant Crocus 'Autumn Flowering 'Sativus'?

Growing and Maintenance Tips for Crocus 'Autumn Flowering 'Sativus'

Planting: Plant corms in late summer to early fall, about 4 inches deep and 4 to 6 inches apart, with the pointed end facing up. Choose a sunny, well-drained site—raised beds or sandy soils are ideal to prevent rot.
Location: Requires full sun (6+ hours daily). Ideal for Mediterranean-style gardens or sunny borders.
Soil: Prefers loose, sandy or loamy soil rich in organic matter. Neutral to slightly alkaline pH (6.5–8.0) is best.
Watering: Water lightly after planting, then sparingly during growth. Overwatering can cause corm rot—aim for about ½ inch of water weekly.
Temperature: Hardy in USDA zones 6–9. In colder zones, lift corms after foliage dies back and store in a cool, dry place.
Fertilization: Apply compost or a low-nitrogen fertilizer after planting. Avoid high-nitrogen feeds, which promote foliage over flowers.
Pruning: Allow foliage to yellow and die back naturally after blooming to replenish the corm.
Propagation: Divide corms every 3 to 5 years in summer when dormant.
Pest & Disease: Generally pest-free. Avoid planting in areas previously used for other Iridaceae to reduce disease risk.