How to Grow Cilantro Slow Bolt
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Cilantro Slow Bolt
Coriandrum sativum 'Slow Bolt'
herbCilantro Slow Bolt is a cold-tolerant cultivar of cilantro (coriander) bred specifically to resist early bolting, allowing for extended harvests of tender foliage. This variety is ideal for gardeners who want a longer season of fresh cilantro leaves before the plant flowers and goes to seed. The plants produce the characteristic pungent, aromatic leaves prized in culinary applications.
When should you plant Cilantro Slow Bolt in your zone?
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Example Cilantro Slow Bolt timeline · Pittsburgh, PA (Zone 6b)
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Plant Cilantro Slow Bolt
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Cilantro Slow Bolt
Around May 17≈ 30 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Cilantro Slow Bolt dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-10; prefers cooler seasons and tolerates light frost
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Germination & Seedling
2-3 weeksSeeds sprout within 7-14 days. Seedlings develop thin stems with feathery cotyledons and first true leaves appearing within 2-3 weeks.
Keep soil consistently moist during germination. Thin seedlings to proper spacing once they have 2-3 true leaves. Ensure adequate light to prevent leggy growth.
Vegetative Growth
3-6 weeks (extended in Slow Bolt varieties)Plant develops multiple stems with increasingly feathery, finely divided leaves. This is the prime foliage stage where leaves are tender, aromatic, and most flavorful.
Pinch off any flower buds that appear to encourage leaf production. Regular harvesting (picking outer stems) stimulates bushier growth. Maintain consistent moisture and cool temperatures.
Early Bolting Resistance
2-4 weeks longer than standard varietiesSlow Bolt cultivars delay the transition to flowering compared to standard cilantro. The plant remains primarily in leaf production mode longer.
This variety is the main advantage—it resists bolting better than regular cilantro. Continue harvesting regularly and avoid stress from heat or drought to maximize the extended harvest window.
Flowering & Seed Production
3-4 weeksSmall white or pale pink flowers appear in umbrella-shaped clusters (umbels). After flowering, distinctive round, ribbed coriander seeds develop and dry on the plant.
Once flowering begins, foliage becomes bitter and less desirable. Allow some flowers to mature if you want to harvest coriander seeds. Seeds are ready when they turn brown and dry (typically 2-3 weeks after flowering).
Seed Harvest & End of Season
1-2 weeks harvest windowSeeds are fully mature and dry. The plant typically dies back or can be cleared from the garden.
Harvest seeds by cutting seed heads into a paper bag and allowing them to dry completely indoors before storage. Seeds can be stored for 2-3 years in a cool, dry place.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with strong water stream to dislodge; use insecticidal soap or neem oil if infestation is severe. Introduce ladybugs or lacewings.
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Increase humidity by misting; spray with neem oil or insecticidal soap. Remove heavily infested leaves.
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Use yellow sticky traps; spray with insecticidal soap or neem oil. Remove infested leaves.
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Improve air circulation; remove affected leaves; avoid overhead watering. Use copper fungicide if needed.
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Ensure good air circulation; avoid high humidity. Spray with sulfur powder or fungicide if present.
Uses
Fresh herb in global cuisines
CulinaryCilantro leaves are essential in Mexican salsas, Indian chutneys, Thai curries, and Vietnamese pho. The fresh, pungent flavor is distinct and adds brightness to numerous dishes, sauces, and garnishes. [source]
Coriander seeds for spice
CulinaryWhen allowed to mature and seed, cilantro produces coriander seeds used as a warm spice in Indian curries, pickling, baking, and spice blends. Seeds have a warm, citrusy flavor distinct from the fresh leaf. [source]
Traditional digestive aid
MedicinalCilantro and coriander seeds have been used in traditional Ayurvedic and Chinese medicine to aid digestion, reduce bloating, and support gut health. Some studies suggest potential detoxifying properties. [source]
Natural flavor and preservation
HouseholdFresh cilantro is used to make infused oils, vinegars, and preserved pestos. Dried cilantro can be used in herb blends and marinades. [source]
Pollinator support
WildlifeWhen cilantro flowers, the delicate white flowers attract pollinators including bees, butterflies, and beneficial insects, supporting garden ecosystem health. [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 leaves when the plant is 4-6 inches tall (approximately 3-4 weeks after sowing). Pinch off outer stems from the base to encourage branching and prolonged leaf production. Harvest in the morning after dew dries for best flavor. Regular harvesting delays bolting significantly. For seed harvesting, allow flowers to mature and dry on the plant; harvest seed heads when they turn brown and dry to the touch.
Fun Facts
- 🌱 Cilantro Slow Bolt was specifically bred to address one of cilantro's biggest frustrations: its tendency to bolt quickly in warm weather or long daylight, often within 3-4 weeks. This cultivar extends the harvest window by 2-4 weeks.
- 🌱 There is a well-documented genetic variation in cilantro perception: approximately 4-14% of people carry a gene variant (OR6A2) that makes cilantro taste strongly of soap or unwanted soapy flavors, while others perceive only fresh, citrusy notes.
- 🌱 Coriander seeds and cilantro leaves are botanically the same plant (Coriandrum sativum) at different life stages, yet they have completely different flavor profiles—one warm and spicy, the other bright and herbaceous.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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