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.
Kale is a cool-weather crop that requires two months of cool weather to reach harvest. Sow seeds indoors or outdoors 4 to 6 weeks before the last frost in spring or as soon as the soil can be worked. Kale is commonly started indoors and transplanted into the garden when seedlings are 4 to 6 weeks old. Description.