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.
Harvesting kale is simple. When the leaves are about the size of your hand, they are ready (they are even tasty when the leaves are young and tender). Use a scissors to cut the stem or snap the stem with your hand just below the leaf. Be sure to choose bottom leaves to harvest and do not pull out the entire plant.