The planting time of walnut seedlings can be divided into spring planting and autumn planting. Spring sowing is mostly carried out after soil thawing and before germination. Planting in autumn is mostly done after beginning of autumn and before the ground freezes. That is, after beginning of autumn 10 to mid-April of the following year is the best time for planting walnut seedlings. In windy areas at high altitude, people are used to planting in spring; Autumn seedlings are easy to peel or freeze. Pay attention to the cold protection of seedlings. In areas where winter is warm and not dry, autumn planting is better than spring planting, and the wounds and roots of planted walnut seedlings can heal. The next spring germinates early, grows vigorously and has a high survival rate.

1, it is better to sow the walnut before and after defoliation, that is, in the solar calendar10-1. At this time, the walnut seedlings have been capped and basically entered a dormant state. At this time, after transplanting and before freezing, walnut seedlings are sprouting new roots, which is very beneficial to the growth in the coming year. The crown of that year can reach 4 square meters.

2. Planting before freezing. At this point, the walnut seedlings have entered a state of complete dormancy. In the process of transplantation, seedlings are like "dreams". Transplanted seedlings germinate and take root directly after spring warming, which avoids injury and has high survival rate. The crown of that year was generally 2-3 square meters.

3. Planting in spring. At this time, the roots of saplings, whether in the nursery or in the heel, have begun to sprout. The root system will be damaged during transplanting, and the seedlings will grow slowly and the survival rate will be low. At that time, the crown was less than 2 square meters, and some were only slow seedlings, and there was almost no crown. It is best to plant in the spring when the local soil has just thawed, usually from late March to late April. Sowing before defoliation has better effect and higher survival rate than sowing after defoliation.

4. Planting in late spring, when the seedlings have taken root in the soil, the seedlings are seriously damaged during transplanting, and the survival rate of slow seedlings is less than 50%, and there is basically no crown in that year.

5. Planting in summer. At this time, the saplings have grown new branches, which requires a lot of water. It is almost impossible to survive because of the sudden water shortage during transplanting. So people often say, "Planting trees in autumn (late winter) is a dream, planting trees in spring is a disease, and planting trees in summer is fatal."