Green flowers.

Walnut is a green flowering plant. The inflorescences of male catkins are drooping, about 5-10 cm long and rarely up to 15 cm. The bracts, bracteoles and tepals of male flowers are all covered with glandular hairs. There are 6-30 stamens, and the anthers are yellow and hairless. Female spikes usually bear 1-3 (or more) female flowers. The involucre of female flowers is covered with very short glandular hairs, and the stigma is light green.

The fruit sequence is short, with drooping berries, and has 1 to 3 fruits; the fruit is nearly spherical, 4 to 6 cm in diameter, hairless; the core is slightly wrinkled, with 2 longitudinal ribs, and the top has a Short pointed head; septum thin, no gaps inside; endocarp wall with irregular gaps or no gaps but only wrinkles. ?

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Extended information

Precautions for planting walnuts

The planting time is around the time of germination in late March. Planting 1 to 2-year-old seedlings has a high survival rate. Water them thoroughly after planting, and strengthen water and fertilizer management. Regularly loosen the soil and weed, pay attention to drainage during the rainy season, and pay attention to preventing and controlling pests and diseases from June to July. Pruning should be carried out during the growth period to keep the stem height above 3m. Do not prune branches after the leaves have fallen, otherwise it will easily cause damage and affect the growth of the trees.

Planting time for deciduous fruit trees is generally in winter, and for evergreen fruit trees in spring. Planting should be standardized and arranged in horizontal and vertical rows. When planting, the grafting joint should be exposed to the ground and the root system should be stretched. Then the soil should be cultivated, solidified, and watered. After the water seeps out, the hole should be sealed to facilitate water retention.

Walnut trees are tall and long-lived, and trees that are hundreds of years old can still maintain high yields. The tree is tall, with thick branches and leafy leaves. The crown diameter of a large walnut tree can reach more than 10 meters, covering an area of ??100 to 200 square meters.

Reference: Baidu Encyclopedia-Walnut Tree