Lemon Rutaceae is a woody plant belonging to the citrus genus, with few or almost no thorns on its branches, and its tender leaves and flower buds are dark purple red; Leaves are oval or elliptical in shape; The petals are light purple red on the outside and white on the inside; The fruit is oval or ovoid in shape, with a thick skin and a lemon yellow color; The flowering period is from April to May; The fruiting period is from September to November. Lemons are native to southeastern and southern Asia, and are cultivated in China south of the Yangtze River. Currently, they are mostly grown in tropical and subtropical regions. Lemon prefers warmth and is not cold resistant. It does not have strict requirements for soil, but it is best to use slightly acidic soil with deep and loose soil layers, rich organic matter, strong moisture and fertility retention, good drainage, and low groundwater level.