If this is edible kale, the yellow flowers are a sign that the plant is bolting. If you have not already, cut the stems that you want and save or cook them. You can cut the flowers for a vase or leave them for appearance, but as an annual, the plant is almost done.
If this is edible kale, the yellow flowers are a sign that the plant is bolting. If you have not already, cut the stems that you want and save or cook them. You can cut the flowers for a vase or leave them for appearance, but as an annual, the plant is almost done.