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Lush flat-leaf Italian parsley plants growing in a sunny raised garden bed

How to Grow Italian Parsley From Seed

Updated November 2026

Italian parsley is the flat-leaf form of parsley (Petroselinum crispum var. neapolitanum), and it is the one most cooks reach for. Its flat, deep green leaves carry more flavor than curly parsley, and the plants grow tall and leafy, so a few of them keep a kitchen supplied from spring to hard frost. It grows exactly like other parsley: slow to sprout, then easy for months.

Ready to grow your own? Shop Italian Parsley Seeds from Organo Republic.

Quick start

Soak the seed overnight, then sow it 1/4 inch deep outdoors 4 to 6 weeks before your last spring frost, or start it indoors earlier. Expect sprouts in 2 to 4 weeks, so mark the row and keep it moist. Thin to 6 to 8 inches apart in full sun to part shade and rich, moist soil. Start cutting the outer stems at about 10 weeks, always leaving the center to keep growing.

Best tip

Sow fresh parsley every spring, even though it is a biennial. In its second year the plant sends up a flower stalk early and the leaves turn sparse and bitter, so first-year plants give you the best Italian parsley. Saving seed? Let one old plant bloom, and keep curly parsley from flowering nearby at the same time, since insects cross the two and the seed will not come true.

At a glance

How to Grow Italian Parsley From Seed — growing specifications at a glance
Botanical namePetroselinum crispum var. neapolitanum
Plant typeBiennial herb (grown as an annual)
USDA zones3 to 9 (grown as an annual)
SunFull sun to part shade
Days to maturity70 to 90 days
Height12 to 30 inches
Spacing6 to 8 inches apart
WaterRegular; keep evenly moist

Uses

Use Italian parsley by the handful, not the sprig. Chop it into gremolata with lemon zest and garlic, blend it into chimichurri or salsa verde, or make tabbouleh, where parsley is the main ingredient. Add the leaves at the end of cooking to keep their flavor bright, and toss the stems into stocks and soups.

Frequently asked questions

Is Italian parsley the same as flat-leaf parsley?

Yes. Italian parsley and flat-leaf parsley are two names for the same plant, Petroselinum crispum var. neapolitanum. Curly parsley is the other common type. Both are the same species, so they are sown, grown, and harvested the same way.

Is Italian parsley the same as cilantro?

No, though the flat leaves look alike. Cilantro has rounder, softer leaves and a citrusy smell, while Italian parsley has pointed, toothed leaflets and a clean, peppery scent. Crush a leaf to tell. Cilantro also bolts fast in heat; parsley lasts far longer.

How tall does Italian parsley grow?

Italian parsley usually forms a leafy clump about 1 to 2 feet tall in its first year, a little taller than curly parsley. Its height jumps only in the second year, when the plant sends up a flower stalk to set seed and the leaves lose their flavor.

How do you keep cut Italian parsley fresh?

Stand the stems in a jar with an inch of water, cover the leaves loosely with a bag, and keep it in the fridge, changing the water every day or two. It keeps for a week or more. For longer storage, freeze chopped leaves in ice cube trays with a little water.

Ready to grow your own? Heirloom Italian parsley seeds give you flat, full-flavored leaves to cut from spring to frost. For the full step-by-step, see our complete parsley growing guide linked at the top of this page.

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Maxim Kaufman, Founder and CEO of Organo Republic

By Maxim Kaufman — Founder & CEO, Organo Republic

Maxim founded Organo Republic in 2017 and personally selects and supervises the quality control of the heirloom, non-GMO varieties the company offers. Under his leadership, Organo Republic was named Agri Business Review’s Top Non-GMO Seed Variety Solution 2026.

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