Parsley
Parsley is a semi-hardy vegetable that grows well in cool to warm conditions. Technically, it is a biennial (the full span from seed to flower is 2 years), but it will not survive freezing winter temperatures, so it is usually treated as an annual.
Spring Planting
Start seeds indoors 12 weeks before the frost date, or purchase transplants. Parsley takes a long time to germinate (2-4 weeks), so buying transplants is recommended.
Harden off and transplant outside 5 weeks before the frost date.
Fall Planting
If you live in a mild climate with a late or no fall frost date (after Nov 1), you might be able to grow parsley until it flowers and goes to seed.
Soil and Fertilizer
Parsley grows best in a rich soil; amend with lots of compost and fertilizer (chemical or organic) at planting and up to every 4 weeks.
Fertilizer: 16-16-8 at planting; 10-10-10 repeat up to every 4 weeks.
Harvest
Harvest by cutting the outside stalks of parsley as soon as the plants develop sprigs with 3 leaves. Harvesting this way promotes new growth of the plant.