Good King Henry is a perennial plant zone 3 - 9. Start seeds inside 4 - 6 weeks before last frost (around April 1st) at 75°. Plant seeds on top of moist seed starting mix, cover with a dome and expose to 8 hours of fluorescent light per day. Keep seeds moist with a handheld sprayer (open dome 1x per day for 30 minutes to air out). Once seeds germinate, remove dome and grow at 72°. Alternatively, sow seeds outdoors May 20th - June 15th and keep moist. Days to germination: 14 - 21. Transplant outside around June 1st. Be sure to water plants at least 1x per week. Wait one year to harvest plant.
Clip leaves and cook. Young shoots can be harvested at 8”, cooked and eaten like asparagus.
Clip seed heads after seeds turn from tan to dark-brown/black. Dry in cloth or paper bags.