Introducing the Variety Characteristics and Cultivation Methods of Asparagus Lettuce 'Lingyu Youmaicai'

'Lingyu Youmaicai' is a cultivated variety of asparagus lettuce (stem lettuce); it is a leaf lettuce belonging to the genus Lactuca in the Asteraceae family. Its leaves are slender with slightly pointed tips, resembling the body shape of a mud carp (ling fish), which is how it got its name. In some places it is also called lingyu maicai, and it is one of the more common types of asparagus lettuce found in seed markets and vegetable markets.

Compared with ordinary asparagus lettuce, 'Lingyu Youmaicai' has leaves that are mostly light green to green, with a smooth and glossy leaf surface, thicker leaf flesh, a crisp and tender texture, and low fiber content. On the palate there is first a faint, clean bitterness, followed by a sweet aftertaste, with the distinctive fresh aroma of asparagus lettuce. This variety grows relatively fast and has good adaptability, while its specific performance in terms of heat and cold tolerance varies slightly among different bred lines.

The cultivation method is basically the same as for ordinary asparagus lettuce; it can be direct-sown or raised as seedlings and then transplanted. Asparagus lettuce prefers a cool climate and can also tolerate a certain amount of high temperature. In production it is mostly arranged for cultivation in spring and autumn, and it can also be grown in summer with shading and cooling. During the growing period, keep the soil moist but avoid waterlogging; for topdressing, mainly apply nitrogen fertilizer lightly, and pay attention to controlling downy mildew, soft rot, aphids, leafminers, and other pests and diseases. Draining promptly after rain helps reduce the occurrence of disease.

For eating, 'Lingyu Youmaicai' is mainly used for its tender leaves and tender stems. It is commonly stir-fried plainly or with garlic, and in Guangdong it is also often stir-fried with fermented black beans and mud carp to make the classic dish stir-fried asparagus lettuce with fermented black beans and mud carp. It can also be used for hot pot or to make upper-broth dishes; the texture is crisp and tender, fresh and refreshing, and it is well liked by consumers.