1. iris japonica. Iris daylily has a strong plant with black and purple spots at the top, 6 petals and yellow anthers. Iris daylily has strong drought resistance and cold resistance. Generally, the yield per mu is 4-75 kg, and the high-yield field can reach 175 kg.

2. Short stick day lily in Darkmouth. Short-stick Darkmouth day lily buds are yellow with a little emerald green, the number of leaves is 12-14, the tube height is 3 cm, and there are no black spots on the mouth. The yield of short-stick day lily in Darkmouth is relatively high.

3. Day lily. There are about 12-16 leaves of day lily, with two or three branches on the upper part, and more than twenty or thirty buds can be born on each flower stem. Day lily is cold-resistant and drought-resistant, with excellent quality, but its yield is relatively low.

4. Gaojia day lily. The yellow flower buds of the high-quality day lily are slightly emerald green, and the yield is not very high.

Daylily in May and April. April daylily is named after it blooms in April of the lunar calendar. In April, daylily has only four flowers per flower scape, which is a good variety of breeding materials.