Parsley: Care and Growing Guide

Sow parsley in full sun and consistent moisture. Soak seeds for 24 hours before planting to cut germination from 3–4 weeks to 1–2 weeks. Harvest outer stems at the base and the plant will produce all season. Both flat-leaf and curly types grow identically — flat-leaf has stronger flavor.

Parsley is a biennial herb, meaning it lives two years: the first year it produces leaves, the second year it flowers, sets seed, and dies. In US gardens, most growers treat it as an annual and replant each spring. In USDA Zones 5–9, however, established plants often survive winter outside and return early the following spring before bolting.

Two types dominate US home herb gardens. Flat-leaf parsley (Petroselinum crispum var. neapolitanum), also called Italian parsley, has flat, serrated leaves and a stronger, more complex flavor. Curly parsley (Petroselinum crispum) has ruffled leaves, milder flavor, and a firmer texture that holds up well as a garnish. Both are equally easy to grow.

Flat-leaf vs curly parsley

Flat-leaf parsley has 3 times more essential oils than curly-leaf. Cook’s Illustrated tested both types in 2018 and found flat-leaf varieties consistently rated higher in blind tastings for freshness, brightness, and depth of flavor. For cooking, flat-leaf is the practical choice.

If you want parsley for cooking, grow flat-leaf. If you want it for garnish or visual interest, curly works fine. Many gardeners grow both.

How much sun does parsley need?

Parsley grows best in full sun — 6 or more hours of direct sunlight per day. It tolerates partial shade better than most culinary herbs, including cilantro and basil. In zones above Zone 8, afternoon shade extends the season by slowing bolting.

Unlike Mediterranean herbs such as rosemary and Greek oregano, parsley does not improve with stress conditions. It wants consistent light, water, and nutrients. Full sun in northern zones, partial shade in southern zones — that’s the adjustment to make by region.

A spot with morning sun and afternoon shade is ideal in Zone 8 and warmer. In Zone 5 and cooler, plant in full sun to maximize the short growing season.

Soil requirements

Parsley grows best in rich, well-drained loam with a pH between 6.0 and 7.0. Unlike drought-tolerant Mediterranean herbs, parsley wants soil that holds some moisture without staying soggy. Amend heavy clay with compost. Sandy soil benefits from a 2-inch layer of compost worked in at planting.

Soil requirements at a glance:

• pH: 6.0–7.0
• Texture: loam or amended soil, not pure sand or clay
• Drainage: retains some moisture but drains within 30 minutes of watering
• Organic matter: 3–4 inches of compost worked into the top 8 inches of soil

A soil test is worth running before planting. Many county extension offices offer mail-in tests for $10–$20. For detailed soil prep guidance, our herb garden guide covers preparation for multiple culinary herbs.

How to grow parsley from seed

Parsley seed germinates slowly — plan for 3–4 weeks without treatment, or 1–2 weeks after soaking.

The seed coat is hard and waxy. Soaking seeds in warm (not boiling) water for 24 hours before planting softens the coat and significantly speeds germination. This is the single most useful step for parsley growers who direct-sow.

Direct sowing outdoors:

• Sow 4–6 weeks before the last frost date in your zone
• Press seeds into moist soil, covering with no more than 1/4 inch of soil
• Keep soil consistently moist — parsley seeds die in dry conditions before germination
• Thin seedlings to 6–8 inches apart when they reach 2 inches tall

Starting indoors:

• Start 8–10 weeks before the last frost date
• Use a seed-starting mix and press seeds just below the surface
• Maintain soil temperature at 65–70°F for best germination
• Parsley dislikes root disturbance — use biodegradable pots or cells that transplant intact

The USDA Plant Hardiness Zone Map can help you identify your last frost date by zip code. Most zones in the continental US allow direct sowing from March (Zone 8+) through May (Zone 4–5).

Growing parsley from transplants

Transplants are faster than direct seeding and the more practical choice for most gardeners. Buy starts in spring at garden centers or plant from your own seedlings.

How to transplant:

1. Harden off seedlings for 7–10 days before planting — set them outside for progressively longer periods each day
2. Transplant on a cool, cloudy day or in late afternoon to reduce transplant shock
3. Plant at the same depth as the nursery pot
4. Water immediately after planting and keep soil consistently moist for the first 2 weeks

Space transplants 8–10 inches apart for flat-leaf varieties and 6–8 inches for curly-leaf. Wider spacing produces larger, bushier plants and improves air circulation.

Watering

Parsley needs 1–2 inches of water per week. It does not tolerate drought the way rosemary or thyme does. Dry soil causes parsley to bolt prematurely and leaf quality to decline.

Water deeply and less frequently rather than lightly and often. Deep watering encourages deep root development, which improves drought resilience between waterings. For container-grown parsley, check soil moisture daily — pots dry faster than garden beds.

Signs of underwatering:

• Wilted, drooping stems even in cool temperatures
• Yellow lower leaves
• Small, pale leaf growth

Signs of overwatering:

• Yellowing leaves combined with soggy soil
• Mushy stem base
• Foul smell from the root zone

Fertilizing

Feed parsley with a balanced fertilizer (10-10-10) at planting and again 6 weeks later. Unlike drought-adapted herbs, parsley responds well to nutrients. A nitrogen boost in early summer extends the productive season before bolting.

For container parsley, use a diluted balanced liquid fertilizer every 3–4 weeks throughout the growing season. Container soil depletes faster than garden beds.

Avoid high-nitrogen fertilizers past midsummer — late-season nitrogen pushes leafy growth while heat is already pushing the plant toward bolting.

How to harvest parsley

Harvest outer stems at the base; never take more than one-third of the plant at once.

This is the most important harvesting rule. Cutting from the outside allows the center of the plant to keep producing new growth. Taking too much at once stresses the plant and slows regrowth significantly.

Best harvesting practices:

• Harvest in the morning after dew dries
• Use scissors or pruning shears — a clean cut heals faster than a torn stem
• Cut the stem at the base, as close to the soil as possible
• Leave at least 3–4 inner stems on the plant after each harvest

You can begin harvesting when the plant has at least 3 sets of leaves. On a mature plant, plan on harvesting every 1–2 weeks to keep the plant productive and delay bolting.

Storing and preserving parsley

Fresh parsley keeps 1–2 weeks refrigerated in a glass of water covered loosely with a plastic bag. Stand the stems upright in the water like cut flowers. Change the water every 2–3 days.

For longer storage, two methods work well:

Freezing: Blanch stems for 30 seconds in boiling water, plunge into ice water, pat dry, and freeze in a single layer on a baking sheet before transferring to freezer bags. Alternatively, chop fresh parsley and freeze in ice cube trays with water or olive oil. Our how to freeze fresh herbs guide covers both methods in detail.

Drying: Hanging bundles in a warm, dark, ventilated space for 1–2 weeks works for parsley, though flat-leaf dries better than curly. The volatile oils that carry parsley’s flavor are less stable than those in rosemary or oregano — dried parsley loses significant potency after 3–4 months. For technique specifics, see our how to dry herbs guide.

Companion planting

Parsley is a genuinely useful companion plant in vegetable gardens. It attracts two types of beneficial insects: hoverflies and parasitic wasps, both of which prey on aphids and caterpillars.

Good companion combinations:

• Tomatoes: parsley attracts beneficial insects that control tomato-attacking pests
• Roses: parsley planted around the base of rose bushes attracts insects that control aphids
• Asparagus: parsley reportedly deters asparagus beetles; the companion relationship is traditional and anecdotally strong
• Carrots: same family (Apiaceae), but they do not compete aggressively at 8-inch spacing

Keep parsley away from mint. Mint spreads by underground runners and crowds out neighboring plants. For comprehensive companion planning for your vegetable beds, our herb garden guide covers spacing and companion combinations for 10 common culinary herbs.

Parsley and black swallowtail butterflies

Black swallowtail butterflies use parsley, dill, fennel, and carrots as host plants. The caterpillars are bright green with yellow-spotted black stripes — distinctive and often startling to gardeners who find them on their herb plants.

Plant extra rows specifically for wildlife. A mature parsley plant can support 5–10 caterpillars before significant defoliation. One extra row of parsley ensures you keep your harvest while providing a host plant. For more on supporting beneficial insects in the garden, see our guide to attracting pollinators.

Common problems

Bolting: The most common complaint. Parsley bolts in heat or after vernalization (exposure to cold). Once the flower stalk appears, remove it immediately — pinching the stalk delays the process for 1–3 weeks. Harvest frequently and keep soil moist to slow bolting.

Leaf spot: Septoria blight causes small yellow spots with dark borders on parsley leaves. It spreads in wet conditions. Improve air circulation, avoid wetting foliage, and remove affected leaves promptly.

Aphids: Parsley attracts green peach aphids (Myzus persicae) and carrot-willow aphids (Cavariella aegopodii). A water blast from a hose removes most colonies without chemical intervention. The beneficial insects that parsley attracts often control light infestations on their own if given a few days.

Damping off: Seedlings that collapse at soil level are suffering from damping off (Pythium or Fusarium fungi). This happens in overly wet, cool soil. Improve drainage and reduce watering for new seedlings.

Growing parsley in containers

Parsley grows well in containers, making it one of the more reliable culinary herbs for apartment balconies or small patios.

Pot requirements:

• Minimum depth: 8 inches (parsley develops a long taproot)
• Minimum diameter: 10 inches for one plant, 18 inches for 3–4 plants
• Drainage holes: essential

Potting mix: Standard potting mix with 20% perlite works well. Parsley doesn’t need the fast-draining mixes suited to Mediterranean herbs. For full guidance on potting soil selection, see our best potting soil guide.

Container watering: Check daily and water when the top inch of soil dries. Containers dry faster than garden beds and parsley cannot handle extended dry spells.

Container-grown parsley produces slightly smaller leaves than garden-grown but is consistently productive with adequate sun and water. Move containers indoors before hard frost in Zones 5 and below.

Growing parsley alongside other herbs

Parsley pairs naturally with other culinary herbs in terms of flavor use, but its soil and water needs differ from Mediterranean herbs.

Compatible in the same bed (similar water needs):

• Chives: same water needs and both benefit from regular harvesting
• Basil: same heat preference and moisture requirements in mid-summer

Grow separately (very different water needs):

• Rosemary: drought-tolerant and needs poor, dry soil — the opposite of parsley
• Lavender: same as rosemary
• Thyme: prefers drier conditions

If you grow a mixed herb bed, group parsley with chives and basil, and create a separate dry zone for Mediterranean herbs. The herb garden guide covers mixed herb bed planning in detail.

The Penn State Extension publishes a herb growing guide that includes parsley germination temperature data and regional planting calendars for Pennsylvania and surrounding states — useful as a reference for mid-Atlantic and Northeast growers.