Six kinds of lettuce cultivated in summer

In the realm of leafy greens, several lettuce varieties have gained popularity for their unique traits and adaptability to different climates. Let's explore some of the most notable ones: First, the Summer Green Dress variety, originally introduced from South Korea. This type features emerald green, oval-shaped leaves that are slightly puckered and thin. It grows semi-upright, is highly resistant to heat and pests, and matures early. It can be sown in late July or August and harvested by mid-October. The yield per acre ranges between 1,000 to 2,000 kg, making it a reliable choice for summer planting. Second, the fast-growing variety from the United States, known for its rapid growth cycle of just 45 days. The plants grow closely together, with wrinkled, wavy-edged leaves that are rich in flavor. It exhibits strong resistance to leaf scorch disease, adapts well to various conditions, and has good cold tolerance. This variety is ideal for summer cultivation and is widely used due to its high productivity and consistent yield. Third, Red Sail Purple Leaves Lettuce, also introduced from the U.S., stands out for its vibrant red color that deepens as it nears harvest. The leaves are wrinkled and visually appealing, with a crisp texture and excellent taste. It is heat-resistant, matures quickly—about 45 days from sowing to harvest—and is suitable for summer planting. The yield per mu can reach 1,500 to 2,000 kg, making it a favorite among farmers. Fourth, Salinas, another U.S. variety, is a medium-maturing type that offers excellent heat resistance and delayed bolting. It is resistant to downy mildew and top scald, with dark green, compact heads. The outer leaves are few, and the inner joints are tight. Each head weighs around 500 grams, with a pleasant appearance and superior quality. It is ideal for summer cultivation and takes about 50 days to mature. Spacing should be 30 cm square, with over 7,000 plants per mu. Fifth, the Italian variety known for its year-round resilience. Introduced from Italy, this lettuce not only boasts a beautiful plant structure and crisp, flavorful leaves but also excels in heat and cold resistance. It can be planted all year round, thrives in hot summers, and maintains high quality without bitterness. With a long harvesting period and yields exceeding 2,000 kg per mu, it’s a top choice for commercial growers. It also resists bacterial diseases and leaf scorch, even during rainy seasons. Lastly, Olympia, a Japanese variety, is known for its strong heat resistance and firm texture. The outer leaves are light green, smaller, and more serrated, while the inner leaves are pale green, compact, and crisp. Each head weighs between 400 to 500 grams, offering a delicious and refreshing taste. The growth cycle lasts 65–70 days, making it suitable for late spring, summer, and early autumn. Sowing can begin in April to July, with harvesting from June to October. Plant spacing should be 25 cm square, with approximately 10,000 seedlings per mu, yielding 3,000 to 4,000 kg per mu. These varieties offer a range of options for farmers looking to diversify their crops and meet market demands throughout the year. Whether you're focusing on heat resistance, speed of growth, or visual appeal, there's a lettuce variety suited for your needs.

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