The small spots on the elm grow by themselves, which are dark yellow at first and turn black with the continuous growth. Most small stains can be cleaned with water. Cleaning method of elm: firstly, select the rotten ones with obvious wormholes, then soak them in light salt water for 5- 10 minutes, and finally rinse them several times.

Elm, oblate, concave at the top, with seeds in the middle, light green or yellow-white clusters on the branches intermittently, and the clusters are covered with branches. Spare money is named because it is round and as thin as a coin, and because it is a homonym of "spare money", there is a saying that eating spare money can have "spare money".

When the spring breeze blows the first ray of green, the golden elm is covered with strings of branches, and people will pick it while it is fresh and tender to make various delicious dishes.

Maintenance method of elm

1, matrix selection

Because of the strong adaptability of elm, the general soil can meet the needs of elm. But it generally likes fertile soil with good drainage, and it is good to mix manure and peat soil.

2. Lighting management

Yu Qian likes sunny environment, and must provide more than 8 hours of light every day, otherwise his growth will become slow, which is not conducive to Qian's growth.

3. Nutrition management

Elm will consume a little more in the key growth period and need to be supplemented with nutrition. The cake fertilizer is used once every 15 days, and a certain amount of NPK fertilizer is added. Applying phosphorus and potassium fertilizer once in winter can improve the cold resistance of Ulmus pumila and help it survive the winter safely.

4. Water management

Elm doesn't like wet environment. When the temperature is high in summer, you can't water it at will. Slightly dry soil is beneficial to its growth. If the humidity is too high, it will lead to root rot of Ulmus pumila.