When to Plant Parsley in Pennsylvania (2026 Guide)
Planting parsley in Pennsylvania requires careful planning due to its biennial nature and regional climate variations. The best time to start parsley seeds indoors is about six to eight weeks before the last frost, which varies significantly across the state. For instance, in Zone 6a, this last frost typically falls around April 23, while in Zone 5b, it is later at May 4.
Not only do frost dates inform you when to sow, but they also guide your harvest strategy. In Pennsylvania's different hardiness zones, your frost-free window will range from about 158 to 212 days. Understanding these dates helps you enjoy fresh parsley from spring to fall, with October 17 marking the first hard frost in Zone 6a.
For those new to gardening, parsley's appeal lies in its versatility and ease of growth. Whether you're choosing the curly variety for garnish or the robust flat-leaf Italian parsley for cooking, both thrive when sown at the right times. Ensure you take advantage of the full season by planting according to your local frost dates.
Planting Schedule by USDA Zone in Pennsylvania
| Zone | Indoor start | Transplant out | Direct sow | Harvest |
|---|---|---|---|---|
| Zone 6a | Start March 1 – March 15, ~6–8 weeks before April 23 | Transplant outdoors April 24 – May 1 | Direct sow outdoors May 1 – May 15 | Harvest from June 1 – October 15 |
| Zone 5b | Start March 15 – March 20, ~6–8 weeks before May 4 | Transplant outdoors May 5 – May 10 | Direct sow outdoors May 10 – May 20 | Harvest from June 15 – October 1 |
| Zone 6b | Start February 15 – March 1, ~6–8 weeks before April 6 | Transplant outdoors April 7 – April 15 | Direct sow outdoors April 15 – April 30 | Harvest from May 15 – November 1 |
Parsley Planting Windows in Pennsylvania
- Indoor start: For Pennsylvania gardeners in zones 5b and 6a, start parsley indoors from March 1 to March 20, ensuring robust growth.
- Transplant outdoors: Transplant outdoors between April 7 and May 10, aligned with specific frost dates for your zone.
- Harvest: Harvest your parsley from June until late October, depending on your Pennsylvania location and local frost conditions.
Common Mistakes Growing Parsley in Pennsylvania
- Many novice gardeners in Pennsylvania underestimate the impact of late frosts on their parsley plants. Always check your local frost dates and protect young seedlings with row covers if necessary.
- Pennsylvania's humidity can lead to fungal problems for parsley. Ensure proper spacing between plants for good air circulation, and avoid overhead watering to keep leaves dry.
- It's common for gardeners to overwater parsley, especially in Pennsylvania's humid climate. Make sure your soil drains well to prevent root rot, which can be detrimental for young plants.
- Planting parsley too early without considering the potential of late-season snow in Pennsylvania can hinder growth. Always stick to the recommended transplanting dates according to your hardiness zone.
- Failing to soak parsley seeds before planting is a mistake many make, thinking it’s unnecessary. In Pennsylvania, this step can dramatically improve germination rates, especially with its varying soil conditions.
Frequently Asked Questions
What if I'm in a cold pocket of Pennsylvania?
If you find yourself in a colder area, consider delaying your outdoor planting until after the last frost date. You might want to start parsley indoors to give them a head start and then transplant when the soil is adequately warmed.
Can I still plant parsley in May?
Yes, you can plant parsley in May, especially if you're in Zone 5b or 6b. Just be sure to transplant or directly sow your seeds after the last frost has passed to ensure healthy growth.
How often should I water my parsley?
Parsley prefers consistent moisture, but avoid waterlogging the soil. Depending on the rainfall in Pennsylvania, a good rule is to water once a week, increasing the frequency during hotter periods.
Is it better to start with seeds or seedlings?
Both methods have their advantages, but starting with seeds allows for more variety. If you're in a hurry, though, buying seedlings from a local nursery ensures you can start harvesting sooner in the growing season.
What's the best way to store parsley after harvest?
To store parsley, you can wash it, pat it dry, and then keep it in a sealed container in the refrigerator. Alternatively, blanch and freeze it for longer storage while maintaining flavor and nutritional value for future use.
Keep Learning
City guides in Pennsylvania
Other crops in Pennsylvania
Typical fall sowing window for Parsley in Pennsylvania: July 9 – July 30.