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.
Choose a kale variety that best suits your growing climate. Kale is usually grouped by leaf shape, and although growing times vary between varieties, most kale is ready for harvest between 45 and 75 days after transplanting. 1  Curly Kale is sweet and mild and is one of the most commonly found kale varieties. 2  It is characterized by its curly, wrinkled leaves.