2. Onions. Onion is a kind of trans-annual vegetable, which is similar to garlic, but it is planted earlier than garlic. In the north, it is usually planted in late August and early September, planted and transplanted at the end of September1early October, and dormant from1month to March next year. After turning green in spring, its roots gradually expand and form onions, and onion heads are harvested in early summer. Those who like onions should get ready to raise seedlings.
3. All kinds of leafy vegetables like cool climate, so they are planted in spring and autumn. After beginning of autumn in the north, the weather gradually becomes cool, and leafy vegetables come back to life, such as lettuce, oil wheat, chicken hair, chrysanthemum, fennel, Chinese cabbage, root vegetable, hamburger coffee, peacock vegetable, etc. Generally, leafy vegetables have a short period of one month after sowing.