1. The color of high-quality day lilies is light yellow or bright yellow, the vegetables are long and thick, even in thickness, and the texture is fresh and free of debris; the color of inferior day lilies is dark yellow with a slight tinge. Red, the vegetable body is short and thin with different lengths, and the thickness is uneven; while the color is yellowish brown, the vegetable body is short, thin and curled, the length difference is too big, and the vegetable with mud in the middle is of the worst quality.

2. High-quality day lilies feel soft and elastic when you hold them, and they can fall apart after you let go, indicating that they have low moisture content; day lilies of poorer quality will not fall apart easily after you let go. , indicating that the moisture content is high; and if it feels sticky when you let go, it means that the daylily has gone bad.

3. Fresh and high-quality day lilies have a refreshing fragrance; spoiled day lilies have a musty smell; day lilies smoked with sulfur have a distinct smell of sulfur; day lilies with a smoky smell are Smoking is serious.

4. If you pinch the tender day lily with your fingers, it will break and the flower will not bloom. The one that grows at the top is a good day lily; some day lilies do not grow at the top. There are traces of pinching on it, which means it is old, and the taste is not good.