There are basically two types of parsley grown here in the North Eastern United States. Which type you choose to grow in your garden is strictly dependent upon personal taste. I prefer the Curled Leaf type, mostly because it has been what I’ve grown used to. The Italian variety is equally good, however. Both are biennial herb. This means that you plant the seed one year, allow it to go to seed the following Spring and it will re-seed itself and come back up the following year. However, for this to happen it will be necessary to plant it in a location where it will not be disturbed year after year. Basically, to plant a bed of parsley, choose a warm, sunny location in your garden in early spring and plant at a time when there is ample rainfall. Or, be prepared to water it regularly until the seeds sprout and begin to shoot up. Parsley seed will not sprout in dry soil. Sometimes it is helpful to soak the seeds in lukewarm water overnight before planting. It must be planted immediately the next day and not allowed to dry out. Keep the soil you plant it in wet. It can tolerate cool temperatures, but not freezing. Sow a generous amount of seed into a well worked plot, or row, of rich, fine, organic soil. Plants can be thinned out later. Cover with about 1/4 inch of fine soil. Press the soil down so the rain will not wash it away. It takes parsley about 21 to 28 days to germinate, so be patient as you watch for the tiny green leaves to begin poking through. When stalks are about an inch high you can thin them. This helps those left grow huskier and stronger.
Parsley seed can also be started indoors. About six to eight weeks before the last frost sow seeds in peat pots or trays. Place on sunny window sill and keep well watered until seeds sprout. When plants are a few inches tall transplant to a warm, sunny location in an outdoor bed in the garden. Harden all plants before setting out into direct sunlight. I do this by sitting them on the sill of an open window, a little each day and gradually increasing the time every day or so. Parsley can be kept growing indoors if you can place it on a window sill that has full sunlight a good portion of the day. It will do better if you can open the window, exposing it to direct sunlight. Always remember to keep it well fed with a good organic fertilizer.