Put the kale into the refrigerator to freeze and save can make its shelf life time longer, or put it in a cool and ventilated place to save, but also effectively extend the shelf life of kale. Collard greens are cruciferous brassica plants, biennial foliage herbaceous flowers, for the horticultural varieties of kale.

The leaf form of collard greens is beautiful and colorful, and the heart leaves are as colorful as flowers, and the whole plant looks like a blooming peony, which is figuratively called "leaf peony".

Because of its preference for cooler climates, collard greens are hardy and can tolerate many short frosts, and in the winter and early spring when all flowers are fading, they are an excellent and indispensable material for open-air flower beds, flowerbeds, and potted plant displays.

The collard greens are highly adaptable to the soil, and are best suited to humus-rich, fertile loam or clay loam soils. It grows quickly, produces high yields and is of good quality in well-watered and cool climates.