What vegetables are suitable for growing in the north in summer?

Summer in the north is suitable for growing disease-resistant, heat-resistant and high-yielding vegetables, such as lettuce, water spinach, cherry tomatoes, cabbage, rapeseed, amaranth, leek, cabbage, cucumber, cowpea, edamame, bitter gourd, onion, radish, celery and cauliflower.

1. Lettuce

Lettuce is suitable for planting in early summer. The suitable germination temperature is between 15-25℃, and it is suitable for growing in an environment between 12-20℃. Therefore, it is advisable to sow in early summer, and shade and cooling measures should be taken during the growth period.

2. Leek

After planting, leeks can be harvested for many years in a row. It is a vegetable with a wide adaptability and has a certain resistance to low and high temperatures. It can germinate at temperatures above 15°C, and the optimal growth temperature is between 12-23°C.

3. Cherry tomatoes

Cherry tomatoes are usually available in the summer and are one of the vegetables that are particularly popular among people. Summer is also the most suitable time to plant cherry tomatoes. They will germinate in about a week after sowing and bear fruit in about 2-3 months.

4. Radish

Radish grows relatively fast and can be sown in early August. It is usually sown in rows and will emerge in about 4-5 days. The seedlings can be transplanted with a spacing of 8-10 cm between them. Keep the soil moist during the growth period and remove weeds at any time. It can be harvested at the end of September.

Key points for growing vegetables in the north in summer

1. Germination: Vegetables need to be germinated before sowing. They can be soaked in clean water for 20 to 24 hours. After being taken out, they are placed in an environment of 25 degrees for germination. They must be kept moist during the germination period. The seeds can be sown after the skin breaks and white spots are exposed.

2. Planting: The seed rate per mu is about 7-10 kg. Generally, dense planting is adopted in row sowing with a row spacing of 33 cm and a hole spacing of 18-20 cm. Three seeds are sown in each hole. Cover the hole with soil after sowing and water it immediately after sowing. Seedlings will emerge in about a week.

3. Note: In summer, the temperature is high and vegetables grow fast, requiring a large amount of fertilizer and water. Water the vegetables frequently and apply top dressing while watering. In autumn, when the temperature turns cooler, cultivate the soil in time to weed and apply top dressing, and pay attention to preventing and controlling pests such as red spider mites.