When to Plant Parsley in Delaware (2026 Guide)
If you're looking to grow parsley in Delaware, understanding the local frost dates is crucial for a successful harvest. In Zone 6b, the median last spring frost occurs around April 10, while in Zone 6a, it's slightly later on April 18. Knowing these dates will help you plan your planting effectively and maximize your enjoyment of this versatile herb.
Parsley is a biennial herb that is often grown as an annual, primarily for its aromatic leaves. With the warmer temperatures of late spring, both curly and flat-leaf varieties thrive in Delaware's climate. These herbs not only enhance your culinary creations but also provide aesthetic appeal in your garden, making them worthy of cultivation.
To ensure a bountiful harvest, it's important to plant parsley at the right time and to follow good gardening practices. In Delaware, the frost-free season begins after the last frost date, which can vary depending on your specific USDA hardiness zone. Proper planning will help you enjoy fresh parsley throughout the growing season.
Planting Schedule by USDA Zone in Delaware
| Zone | Indoor start | Transplant out | Direct sow | Harvest |
|---|---|---|---|---|
| Zone 6b | Start February 15 – March 1, ~6–8 weeks before April 10 | Transplant outdoors April 20 – May 5, after April 10 | Direct sow outdoors April 20 – May 10, after April 10 | Harvest from June 1 – October 30, until the first frost |
| Zone 6a | Start February 25 – March 10, ~6–8 weeks before April 18 | Transplant outdoors May 1 – May 15, after April 18 | Direct sow outdoors May 1 – May 20, after April 18 | Harvest from June 15 – October 24, until the first frost |
Parsley Planting Windows in Delaware
- Indoor start: Start parsley indoors from February 15 to March 10, depending on your USDA zone.
- Transplant outdoors: Transplant parsley outdoors between April 20 and May 15, ensuring all frost risks have passed.
- Harvest: Harvest parsley from June 1 until October 24, making the most of the frost-free season.
Common Mistakes Growing Parsley in Delaware
- Many first-time gardeners in Delaware believe they can start parsley too early. If planted before the last frost date, seeds or seedlings may suffer frost damage, especially in coastal or northern areas.
- Overwatering is a common mistake in Delaware gardens due to high humidity levels. Ensure that parsley is planted in well-draining soil to avoid root rot, which can easily occur during wet springs.
- Some gardeners in Delaware neglect to prepare their soil properly before planting. Testing for soil pH and amendments can greatly enhance parsley growth, especially since Delaware's soil tends to be more alkaline.
- Planting parsley too closely can lead to poor air circulation and increased disease risk, especially during the humid summer months typical in Delaware. Give plants enough spacing to thrive and reduce competition.
- Assuming parsley can survive the heat of summer is a mistake. In Delaware, taller plants, such as tomatoes, can shade parsley, which is beneficial, but ask experienced gardeners about temperature considerations to avoid bolting.
Frequently Asked Questions
What if I'm in a cold pocket of Delaware?
If you're in a colder area, consider starting parsley indoors and transplanting only after the last frost dates in your zone. This approach can protect sensitive seedlings from unexpected cold snaps.
Can I still plant parsley in May?
You can plant parsley in May, but make sure to keep watch for potential late spring frosts if you're in Zone 6a. Transplant seedlings or direct sow earlier in the month for best results.
How often should I water parsley?
Parsley prefers consistently moist soil, so water it regularly, especially during Delaware's hot months, but avoid overhead watering to diminish the risk of diseases. A deep watering once a week is often sufficient.
Is parsley frost-tolerant?
Parsley can tolerate light frosts but will not survive hard freezes. In Delaware, plan to harvest before the first hard frost in late October to ensure your crop is safe.
How long does it take for parsley to germinate?
After soaking the seeds, parsley typically germinates within 10 to 14 days. If not pre-soaked, it may take up to 21 days. Be patient and ensure the soil remains moist for best results.
Keep Learning
City guides in Delaware
Other crops in Delaware
Typical fall sowing window for Parsley in Delaware: July 18 – August 8.