How to Grow Coriander Calypso
Coriander Calypso
Coriandrum sativum 'Calypso'
herbCoriander Calypso is a slow-bolt cilantro variety prized for extended leaf production before flowering. This cultivar maintains tender, flavorful foliage longer than standard coriander, making it ideal for continuous harvesting. The plant eventually produces aromatic coriander seeds if allowed to mature.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 2-11; prefers cool to moderate temperatures for maximum leaf production
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Growth Stages
Seedling
1-2 weeksDelicate cotyledons emerge with thin, thread-like first true leaves appearing within 7-10 days
Keep soil consistently moist but not waterlogged. Provide bright indirect light. Thin seedlings to proper spacing once true leaves appear.
Vegetative/Leaf Production
3-6 weeksPlant develops multiple ferny, finely divided green leaves in a bushy mound. Calypso variety shows extended vegetative phase before bolting urge
Pinch tips to encourage bushiness. Maintain consistent watering and cool temperatures. Harvest outer leaves regularly to promote branching. Mulch to retain moisture and keep roots cool.
Bolting/Flowering
2-3 weeksPlant elongates with flowering stems emerging from the center. Tiny white or pale pink flowers appear in delicate compound umbels. Leaf flavor becomes more pronounced (cilantro taste intensifies)
Calypso delays this stage longer than other varieties. Once bolting begins, harvest remaining leaves promptly. Allow some flowers to develop if you want to collect seeds.
Seed Formation & Maturity
3-4 weeksFlowers fade and small, round, ribbed seeds develop. Seeds turn from green to brown when mature. Plant dries back naturally.
Stop harvesting leaves and allow plant to focus energy on seed development. Tie stems in bundles or place stalks in paper bags as seeds dry. Collect seeds when they turn golden-brown.
Harvest Ready
Variable based on drying conditionsSeeds fully mature and dry on the plant. Fragrant coriander spice ready for collection and storage.
Cut entire seed heads and hang upside down over a cloth or paper to catch falling seeds. Dry completely before storage.
Common Pests
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Spray with insecticidal soap or neem oil. Strong water spray to dislodge. Encourage natural predators like ladybugs.
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Increase humidity with misting. Use neem oil or miticide spray. Remove heavily affected leaves.
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Remove and dispose of affected leaves. Row covers on young plants. Spinosad spray if severe.
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and
(Gastropoda)
Hand-pick, especially at dusk. Beer traps. Diatomaceous earth around base. Remove debris and hiding spots.
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Ensure good air circulation. Avoid overhead watering. Sulfur dust or baking soda spray (1 tsp per gallon water).
Uses
Fresh cilantro leaf garnish and cooking
CulinaryCalypso's tender leaves are perfect for curries, salsas, chutneys, and Asian dishes. The extended leaf production period makes this variety ideal for regular harvesting throughout the growing season. [source]
Coriander seed spice
CulinaryWhen allowed to mature, Calypso produces aromatic coriander seeds used whole or ground in Indian, Middle Eastern, and European cuisine. Seeds have a warm, citrusy flavor distinct from the fresh leaf. [source]
Digestive support and anti-inflammatory
MedicinalCoriander has traditional use in Ayurvedic and Chinese medicine for digestive complaints and inflammation. Both leaves and seeds contain compounds with potential antispasmodic and antioxidant properties. [source]
Culinary flavoring and preservation
HouseholdCoriander seeds are a pickling staple, used in brines, spice blends, and preserved vegetables. Fresh leaves add flavor to infused oils and vinegars. [source]
Pollinator attractant
WildlifeWhen allowed to flower, coriander attracts beneficial insects including bees, hoverflies, and parasitic wasps that control garden pests. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Begin harvesting outer leaves when plant reaches 6 inches tall, typically 3-4 weeks after sowing. Pinch tips regularly for bushiness and to delay bolting. Calypso's key advantage is extended harvest—it resists bolting longer than standard cilantro, allowing 5-8 weeks of continuous leaf harvesting in cool conditions. For seeds, allow 1-2 flower stems to mature fully; cut entire seed heads when brown and dry over cloth. For cilantro spice, dry seeds in a warm location for 1-2 weeks before grinding.
Fun Facts
- 🌱 Coriander Calypso was specifically bred to resist bolting, addressing the major frustration with standard cilantro in warm weather—it extends the harvest window by 2-3 weeks compared to ordinary varieties.
- 🌱 The same plant produces two entirely different-tasting herbs: peppery, citrusy cilantro leaves when young, and warm, toasted-orange-scented coriander seeds when mature; the flavor compounds are completely different between stages.
- 🌱 Cilantro's distinctive 'soapy' taste is genetically determined—a variant in the OR6A2 gene makes about 4-14% of people perceive aldehydes in cilantro as soapy rather than fresh and citrusy, making it one of the most polarizing herbs in cuisine.
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