Parsley Spacing and Planting Guide
A parsley planting guide covering spacing, square foot gardens, temperature tolerance, sun, watering, and whether parsley is an annual or perennial.
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Parsley Spacing
Space parsley about 8 to 12 inches apart. In square foot gardens, one parsley plant per square foot is a simple spacing rule. Parsley can grow into a full leafy clump, especially flat-leaf types, so tight spacing can reduce airflow and make harvest messier.
Use the ThriveThyme flat-leaf parsley page for plant-specific details. Parsley grows best in cool to mild weather, with steady moisture and rich, well-drained soil.
When to Plant Parsley
Parsley can be started indoors 6 to 8 weeks before the outdoor planting window because the seeds are slow to sprout. Transplant after hard freezes ease, or plant seeds straight in the garden when soil is workable. In warm climates, fall and winter planting often performs better than hot summer planting. In Australia and other Southern Hemisphere areas (for example, Melbourne), parsley planting is strongest in autumn and early spring rather than the hottest part of summer.
Is Parsley Annual or Perennial
Parsley is a biennial, not a true annual or perennial — it lives for two years. It grows leaves in year one, then flowers, sets seed, and dies in year two. Most gardeners treat parsley as an annual and replant each year because leaves get bitter and sparse once the plant bolts (sends up a flower stalk). In mild-winter areas, first-year plants often survive winter and give a strong early-spring harvest before bolting.
Sun, Water, and Temperature
- Sun: Full sun in cool climates, or afternoon shade in hot summer areas.
- Water: Keep soil evenly moist. Parsley dislikes drying to bone dry between waterings.
- Temperature tolerance: Parsley handles light frost and short dips into the mid 20s F, especially once established. It slows in cold soil and can bolt in prolonged heat above the mid 80s F.
- Winter parsley: In zones 7 and warmer, first-year parsley often overwinters outdoors with light mulch. In colder zones, move a pot to a bright cool window or a cold frame for winter harvests.
Harvest Care
Harvest outer stems first at the base so the center keeps producing. Do not shave the plant to the crown. Regular light harvesting encourages fresh leafy growth and delays bolting.
Next Steps
Give parsley enough room, water consistently, and do not bury the crown. If you want steady kitchen harvests, plant two or three starts instead of crowding one plant, and start a fresh round every year since parsley bolts in its second season.