Italian Giant Parsley

Start seeds indoors 6 to 8 weeks before your last spring frost in soil kept between 50 and 75 degrees Fahrenheit. Parsley germinates slowly; soak seeds overnight to improve germination rates. Transplant seedlings to individual cells or small pots when they develop their first true leaves.

Harden off seedlings over 7 to 10 days by gradually exposing them to outdoor conditions. Transplant to the garden once soil is workable in spring, spacing plants 8 inches apart in rows 12 inches apart. Italian Giant's frost tolerance allows early planting before the last frost date passes.

Direct sow seeds in the garden in early spring as soon as soil can be worked, or in midsummer for a fall harvest. Keep soil consistently moist until seedlings are established; germination can take 14 to 21 days in cool conditions. Thin seedlings to 8 inches apart once they have developed true leaves.

Begin harvesting Italian Giant when plants reach 6 to 8 inches tall, typically around 70 to 79 days from sowing. Pinch off outer stems from the base of the plant, encouraging the center to continue producing new growth. For heavy harvests, you can cut the entire plant back to 2 inches above soil level, and it will regenerate multiple times across the season. Harvest regularly to promote vigor and prevent flowering, which signals the end of the annual plant's productive life.

Pinch back the top growth regularly once plants reach 6 inches tall to encourage bushier, more compact growth and higher overall leaf production. Remove flower stalks as they appear to redirect energy toward leaf growth and extend the harvest window. The upright growth habit responds well to regular harvesting, which naturally promotes branching and fuller development.