How to Grow Curly Leaf Parsley
Curly Leaf Parsley
Petroselinum crispum var. crispum
herbCurly leaf parsley is a biennial herb with densely ruffled, bright green foliage that forms attractive mounds. It's one of the most popular culinary herbs, prized for its mild, slightly sweet flavor and decorative appearance.
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Example Curly Leaf Parsley timeline · Pittsburgh, PA (Zone 6b)
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Plant Curly Leaf Parsley
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 Curly Leaf Parsley
Around Jun 26≈ 70 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-10; best in cooler zones 3-7, grown as winter annual in warmer zones
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Seed Germination
3-4 weeksSeeds are slow to germinate, taking 3-4 weeks to emerge with characteristic two seed leaves
Soak seeds 12-24 hours before planting to improve germination; keep soil consistently moist; maintain soil temperature between 50-70°F for best results
Seedling & Early Growth
2-3 weeksTiny seedlings develop their first true leaves with slight curling; plant becomes a small rosette
Thin seedlings to proper spacing once they have 2-3 true leaves; avoid overwatering which causes damping off; provide bright light
Vegetative Growth
4-8 weeks (ongoing)Plant develops characteristic curly, dark green foliage in dense mounds reaching 12-18 inches tall
Pinch off any flower buds to encourage leaf production and extend harvest; fertilize every 3-4 weeks with balanced fertilizer; maintain consistent moisture
Flowering (2nd Year)
4-6 weeksPlant bolts with tall flowering stalks bearing small greenish-yellow flowers in umbrella-shaped clusters (umbels)
This signals the plant is preparing to set seed and die; flavor diminishes; harvest remaining leaves before flowers fully open
Seed Production & Decline
4-8 weeksFlowers mature into small, ribbed seeds; plant foliage becomes bitter and depletes; plant naturally dies
Allow a few plants to flower and dry completely if collecting seeds; save mature seeds for next year's planting; remove spent plants
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick caterpillars; allow some damage as they become beautiful black swallowtail butterflies; use row covers on young plants if needed
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Spray with neem oil or insecticidal soap; increase humidity and mist foliage; remove heavily infested leaves
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Handpick at night; use beer traps; create barriers with diatomaceous earth; encourage beneficial predators like ground beetles
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Use yellow sticky traps; spray with neem oil; remove heavily affected leaves; maintain good air circulation
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Remove affected leaves; avoid overhead watering; ensure good air circulation; apply copper fungicide if severe
Uses
Fresh Garnish & Cooking
CulinaryCurly parsley is a versatile culinary herb used as a fresh garnish, in salads, soups, stews, and sauces. Its mild flavor complements fish, poultry, and vegetable dishes without overpowering other tastes. [source]
Digestive & Anti-inflammatory Support
MedicinalParsley contains high levels of vitamins K and C and has been traditionally used to support digestion, reduce inflammation, and as a diuretic. Modern herbalists use parsley tea and fresh leaves for general wellness. [source]
Fresh Breath & Odor Reduction
HouseholdChewing fresh parsley leaves has been traditionally used to freshen breath and mask odors from garlic and onions due to its volatile compounds. [source]
Butterfly Host Plant
WildlifeCurly parsley is the preferred larval host plant for the beautiful Black Swallowtail butterfly. Gardeners often deliberately plant extra parsley to support butterfly populations. [source]
Herb Infusions & Preservation
CulinaryFresh parsley can be dried, frozen, or infused into vinegars and oils for long-term storage. Dried parsley retains good flavor and nutritional value when properly stored. [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 when plant has at least 6 leaves (usually 50-70 days from sowing); pinch or cut outer stems first, allowing the center to continue growing; harvest regularly to encourage bushiness and prevent flowering; best flavor in early morning after dew dries; can be cut back to 2 inches from ground and will regrow; as biennial, second-year plants are less productive; for continuous supply, succession plant every 3-4 weeks
Fun Facts
- 🌱 Parsley seeds have an incredibly long germination time (3-4 weeks) because they contain natural germination inhibitors; legend says parsley must go to the Devil and back seven times before sprouting!
- 🌱 Black Swallowtail caterpillars that feed on parsley perform a defensive display called the 'osmeterium'—they pop out bright orange tentacles and release a foul smell when threatened.
- 🌱 Ancient Greeks associated parsley with death and funerals, yet also used it to crown victors at games; this dual symbolism made it a complex herb in European folklore.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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