When to Plant Parsley
Planting Window - Start indoors or direct sow
- Start indoors (optional)
- 8-10 weeks before last frost
- Direct sow
- ~2 weeks before last frost
| USDA Zone | Typical Window |
|---|---|
| Zone 5 and colder | Start Feb indoors, or sow April |
| Zone 6-7 | Start Jan-Feb, or sow March |
| Zone 8 and up | Nearly year-round outside the hottest weeks of summer |
Parsley is genuinely frost-hardy, which simplifies its outdoor timing considerably, but its real planning challenge is different from most herbs on this site: seed germination is so slow and erratic that starting early enough to account for the wait matters more than working around cold tolerance.
Starting Seeds Indoors or Direct Sowing
Parsley can be started indoors 8-10 weeks before your last frost date, or direct-sown a couple of weeks before it - either way, expect germination to take two to four weeks, considerably longer than most garden seed, and soaking seed overnight before sowing helps speed this up somewhat without eliminating the wait entirely.
Indoor Starting Buys Predictability, Not Speed
Starting parsley indoors doesn't make the seed germinate meaningfully faster than direct-sowing would - the real advantage is being able to monitor and be patient with a tray on a windowsill rather than staring at an apparently empty garden row for weeks wondering whether the sowing failed.
Flat-Leaf and Curly Parsley Share Identical Timing
Whether growing flat-leaf (Italian) or curly parsley, the slow germination, biennial habit, and general frost tolerance are all essentially identical between the two - the choice between them is entirely a flavor and kitchen-use decision, with no meaningful difference in when either should be started or transplanted.
A Second-Year Planting Isn't Really Replanted at All
Where parsley survives winter as an established plant, its second-year growth and eventual flowering the following spring happens on its own, without a new planting decision - the only timing question at that point is when to pull the plant once leaf quality declines as it commits to flowering, not when to plant it again.
Soaking Seed Shortens the Slow Germination
Parsley seed contains natural germination inhibitors in its coating that slow sprouting considerably - soaking seed in warm water for 24 hours before sowing, and keeping the seed bed consistently moist afterward, are the two most effective ways home gardeners have to meaningfully shorten the wait.
Zone boundaries follow the USDA Plant Hardiness Zone Map (2023 revision); frost windows reflect NOAA/NCEI climate normals. Both are typical historical ranges, reviewed annually - not a forecast or a guarantee for any single year. See Methodology & Sources.
Frequently Asked Questions
It's been over a month and still nothing - at what point should I actually suspect the sowing failed rather than just being patient?
Past about five to six weeks with consistently moist soil and no sign of germination, it's reasonable to suspect old or nonviable seed rather than simply more of the normal wait, since even parsley's genuinely slow germination rarely stretches meaningfully beyond a month under decent conditions. At that point, resowing fresh seed - ideally soaked overnight first - is a more productive use of the remaining season than continuing to wait on a row that likely failed.
Is parsley's flavor and leaf quality at its best right when it first matures, or does it improve with more growth?
Leaf quality is generally best through most of the first year, before the plant shifts energy toward its second-year flowering. Regular harvesting of outer leaves during that first-year window, rather than waiting for the plant to reach some larger fixed size, keeps the best-quality growth coming rather than letting older, tougher leaves accumulate unused.
Does parsley transplant poorly the way carrots do, given it's also a taproot plant?
It's more tolerant of transplanting than a true root crop like carrots, but the taproot does resent rough handling, so starting seed in deeper cell trays or biodegradable pots that go straight into the ground minimizes the setback compared to a shallow tray requiring bare-root separation. A gentle transplant at a young stage generally succeeds without the dramatic forking or stunting a disturbed carrot root can show.
Will parsley started in a container mature on the same timeline as parsley started in the ground?
Yes, given similar soil depth and moisture - container-grown parsley follows the same slow germination and biennial growth pattern as an in-ground planting, so the container itself doesn't change the underlying timeline, just the practical convenience of managing that long wait.