What Lettuce Varieties Are There? A Full Analysis of Seed Selection Methods

Lettuce is a relatively common leafy vegetable with high nutritional value. It tastes crisp and sweet and is very popular among consumers on the market. Although growing lettuce is relatively simple, the most important thing for farmers before planting lettuce is seed selection. So what lettuce varieties are there? How do you select seeds? Let's take a look together below.

1. Olympia

An extremely early-maturing crisp-leaf heading variety introduced from Japan. It has strong heat tolerance and bolts extremely late. The outer leaves are small, with many notches on the leaf margins. The head is firm, and the quality is crisp and tender with good taste. It is suitable for late spring, early summer, summer, and early autumn cultivation.

2. Beishan No. 3

Also an extremely early-maturing variety introduced from Japan. It has very strong heat tolerance and also tolerates high humidity, and bolts extremely late. The outer leaves of the head are large, the leaf sheaths are thick, and the inner head leaves gradually become smaller and fewer, making it a "leaf-heavy" variety. It is suitable for late spring, summer, and autumn cultivation. The time from transplanting to harvest is short, only 40-50 days. In summer it is suitable for close planting, and it is also a good variety suitable for greenhouse soilless cultivation. However, because it bolts extremely late, it is not easy to save seed.

3. Caesar

An excellent extremely early-maturing variety introduced from Japan. It has strong heat tolerance, heads well under high temperatures, is disease-resistant, bolts late, and tolerates fertilizer. In appearance, the plants grow uniformly and the plant shape is compact. The quality is crisp and tender. It is suitable for protected cultivation in spring and autumn and open-field cultivation in summer.

4. Emperor

A mid-early maturing variety introduced from the United States. This variety is heat-tolerant and disease-resistant, with strong adaptability. The head is very firm, and the top of the head is relatively flat, making it a leaf-heavy variety. It is crisp, tender, and refreshing, with excellent quality. It is suitable for open-field cultivation in spring, summer, and autumn, and also for protected cultivation in winter and early spring.

5. Queen

A mid-early maturing variety introduced from the United States. Its heat tolerance is slightly weaker than that of "Emperor," and it bolts late. It is relatively resistant to lettuce mosaic virus disease and tipburn. The head is flat and round, and the head is firm and light green. The texture is tender and crisp, with good flavor.

6. Salinas

A mid-early maturing variety introduced from the United States. It is relatively heat-tolerant, bolts late, and is resistant to downy mildew and tipburn. The plants grow vigorously and uniformly, with relatively few outer leaves, and the head is firm. It has a good appearance and excellent quality, but matures uniformly. It is relatively tolerant of transport and can adapt to summer cultivation.

7. Vanguard 75

A mid-early maturing variety introduced from the United States in the early years. It has relatively strong adaptability and can be cultivated in summer, but the yield is relatively low, and it must be harvested in time. Under high temperature and high humidity, it is relatively prone to tipburn and rot. When cultivated in cool weather, the plants are larger and grow vigorously, so it is suitable for protected cultivation in winter and early spring. It is cold-tolerant and resistant to mosaic disease.

8. Calmar

An early-maturing variety introduced from the United States. It has strong heat tolerance, is resistant to mosaic virus disease and tipburn, and bolts late, making it very suitable for late summer and early autumn cultivation. The head is flat and round, larger and firmer than the head of "Emperor," with few deformed heads and a good appearance, making it a leaf-heavy variety.

9. Pegasus

An early-maturing variety introduced from the United States. It has the advantages of resistance to mosaic virus disease and extremely strong tolerance to tipburn. In summer cultivation it shows good heat tolerance and is resistant to premature bolting. The head is medium-sized and green, darker in color than the "Emperor" variety, and the head is firm.

10. Curly-leaf lettuce

Produced in Germany and newly introduced by the Chinese Academy of Agricultural Sciences, it belongs to the semi-heading type and is an annual vegetable of the Asteraceae family. It has relatively good quality, has a bitter taste, is relatively heat-tolerant, has strong adaptability, and has strong resistance to pests and diseases. It has the effects of clearing heat, reducing inflammation, and inducing sleep, and is suitable for open-field cultivation in spring and autumn as well as protected cultivation.

The above is an introduction to lettuce varieties. When planting lettuce, be sure to choose plump, uniformly sized seeds. After buying the seeds, they need to undergo some special treatment. They can be soaked in warm water for a period of time, which can soften the seed coat to a certain extent and is very helpful for increasing the germination rate.

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