Croup is also known as laryngotracheitis, a medical term that describes the inflammation of the trachea (windpipe) and larynx. Parainfluenza viruses are the typical root cause of the infection, but influenza (flu) and cold viruses may sometimes be responsible.
Harvest entire kale plants at 60 to 80 days after germination when they are full size and no longer growing larger. Gather the leaves of one kale plant upward and hold them in this position. Cut across the bottom of the plant, horizontally about 1 inch above ground level to harvest the entire plant for side dishes, main dishes, soups or stews. Place the plants in a container to transport them indoors for storage or use.
The only way Kale will grow up big and strong to last multiple seasons is by undergoing continued, proper harvesting. So whatâs the proper way? Always harvest the older, larger leaves that are closest to the bottom of the stalk, and be sure to take each leaf stem-and-all. So long as you continue to harvest in this fashion, the plant will continue to produce new leaves from the top as it grows taller. But if you harvest the leaves from the top, they you will stunt the plants growth! Also note: you should continuously remove yellowed leaves.