parsley is a biennial plant that will not come back every year. Even with the best of care, parsley will only live two years before going to seed. Read the original article on The Spruce.

The Apiaceae family includes carrots, wild carrots, and parsley to name just a few ... Before they will go to seed, carrots need a period of 10 weeks below 59 degrees Fahrenheit.

Italian flat-leaf parsley, P. neapolitanum, is another popular variety. This plant can grow two to three feet tall and is gangly in habit. The flat serrated leaves have a much stronger and sweeter ...