Because fresh day lily contains a kind of "colchicine" substance, although it is non-toxic, it is absorbed by the gastrointestinal tract in the process of participating in human metabolism and produces colchicine oxide. Colchicine oxide has a strong stimulating effect on human respiratory tract and gastrointestinal tract. The main symptoms are nausea, stomachache, diarrhea and severe hematuria. Because the "colchicine" component of fresh day lily will be weakened or disappeared at a high temperature of 60 degrees, the picked fresh day lily is not suitable for direct consumption. Blanch fresh daylily with boiling water first, then soak it in clear water for more than 2 hours, then take it out and wash it with water, which can destroy colchicine and make it safe to eat fresh daylily. Of course, the day lily can be steamed and made into dried day lily, which can be safely eaten at any time.

Chinese medicine believes that day lily is flat, sweet and slightly bitter, and belongs to liver, spleen and kidney meridians; It has the effects of clearing away heat, promoting diuresis, detoxicating, relieving swelling, stopping bleeding, relieving restlessness, widening chest diaphragm, nourishing blood and calming liver, promoting diuresis and promoting lactation, relieving sore throat and expanding chest, clearing damp heat, promoting lactation, supplementing vitamins, crude cellulose and trace elements, and moistening dryness.

Of course, people with itchy skin should not eat it. Daylily contains more crude fiber, so patients with gastrointestinal diseases should eat it carefully.

In a word, the newly picked day lily can't be eaten directly with instant noodles without treatment.