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Dark Green Italian Giant Parsley

Dark Green Italian Giant · Apiaceae

Large flat-leaf parsley with deep green aromatic foliage and strong culinary flavor. More upright and heat-tolerant than curly types, making it a dependable cut-and-come-again kitchen herb for beds, borders, and containers. Key facts: 60–75 days to maturity, 4+ hours of sun, 6–8 " spacing. Container-friendly (minimum 1-gallon pot).

Updated April 19, 2026 · Backed by 3 cited sources
Overview

At a Glance

The essentials first: timing, light, spacing, seed-starting, container fit, and overall size.

Days to maturity
60–75 days
Sun
4+ hours
Full Sun In Cool Weather Or Light Shade In Warmer Regions
Spacing
6–8 "
between plants
Seed start
0–4 weeks
before transplant
Container
Yes
1+ gallon pot
Height
1.5–2.5 ft
at maturity
Planting window

Zone Planting Guide

Switch zones to see whether this plant is a strong fit, what frost timing looks like, and any extra notes worth planning around.

This card updates instantly with viability, frost timing, and any planting notes for your selected zone.

Care

Growing Guide

Everything in one place: seed starting, transplant timing, watering, soil, and structural support.

Seed starting
Germination
Time14–28 days
Optimal temperature65°F
Seed depth0.25"
Moving outdoors
Transplanting
Minimum soil temp45°F
Harden off5 days
Moisture
Watering
Weekly1–1.5 "
NeedsConsistent
Drip or base watering
Root zone
Soil
pH range6–7.5
PreferredWell Drained Fertile Loam
Parsley - Dark Green Italian Giant seeds

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Parsley - Dark Green Italian Giant seeds

Can take 3-4 weeks before seedlings appear.

Shop on Seeds Now
Resilience

Plant Health

Stress tolerance, resistance notes, and the most common problems to watch for as plants mature.

Tolerance
Heat: Moderate Cold: High Drought: Low

Common Issues

Slow Germination

Cause: Parsley seed naturally emerges slowly, especially if surface moisture fluctuates

Prevention: Keep seedbed evenly moist and be patient

Leaf Spot

Cause: Crowded wet foliage

Prevention: Thin seedlings, water at the base, and remove older damaged leaves

Bolting Second Year

Cause: Biennial plants flower after winter or prolonged cool exposure

Prevention: Harvest heavily in year one and replace plants when bolting begins

Feeding & picking

Nutrition & Harvest

How hungry the plant is, what ripe harvest looks like, and how long the crop keeps after picking.

Feeding
Nutrition
Feeding intensityLight feeder
RecipesWorm Castings Topdress, Compost Tea
Timing
Harvest

Outer stems are 6-10 inches tall, dark green, and fully divided; centers remain active for regrowth.

Expected yield0.2–0.8 lbs/plant
Storage7 days — Refrigerate stems upright in a jar or loosely wrapped; dry or freeze for longer keeping.
Plant relationships

Companion Planting

Helpful neighbors can support growth or deter pests. Keep antagonistic plants separated to reduce stress and competition.

Good companions
What you'll need

Growing Supplies

Based on Dark Green Italian Giant Parsley's growth profile -- recommendations matched to this variety's specific requirements.

Drip irrigation / soaker hose kit

Every gardener benefits from putting water at the root zone instead of on the leaves, because drip and soaker systems reduce foliar disease pressure by limiting leaf wetness and soil splash. A quality kit should include a backflow preventer, filter, pressure reducer, and UV-resistant tubing.

Source: Iowa State University Extension; Colorado State University Extension; UMass Extension

Soil test kit

A soil test gives a baseline for pH and nutrient status so gardeners can add only what the soil actually needs. Prioritize a mail-in or lab-affiliated kit whenever possible because extension guidance notes that laboratory testing is more accurate than instant readers.

Source: University of Maryland Extension; Purdue Extension; Montana State University Extension

Quality bypass pruners

Extension guidance favors bypass designs because they make cleaner, closer cuts on living tissue than anvil types. Look for hardened steel blades that can be sharpened, a comfortable grip, and a cutting capacity matched to real home-garden stems.

Source: University of New Hampshire Extension; Iowa State University Extension; Purdue University Extension

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Research

Sources

Reference material and extension guidance used to build this growing guide.

seed_catalog Seeds Nowuniversity University of Minnesota Extensioninference Estimated flat-leaf variety harvest window and GDD from Italian parsley growth habit and extension parsley culture
Internal links

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