By our calculations, you should look at sowing Jersey Knight about 90 days before your last frost date.
Make sure the soil is at least 50-degrees Fahrenheit before planting outdoors.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Jersey Knight is a hardy plant.Don’t harvest the first year. Very light harvest the second year, and normal harvest thereafter.
This variety came from Rutgers University.
Jersey Knight F1,
Asparatus