Lemon rind with small black spots, there are several types of cases.

1, lemon rind natural growth of small black dots, is the fruit after the flower to the fruit throughout the expansion period, the surface formation of brown or dark brown dotted, linear or indeterminate hard gelatinous small granular dots, this type is because of the fruit did not hit the medicine, or hit the medicine but washed by the rain, got black spot disease. Formerly known as resinous or sandy skin disease, it is a common disease of citrus fruits. This black spot is irrelevant, it is just unattractive and has no effect on the inside of the lemon. There is relatively no pesticide residue. The lemon fruit remains good enough to eat.

2, caused by pests. The growth process of lemon, subject to some insect pests, will cause some black spots on the rind. As well as some wind and rain, melanin deposition formation and so on have a certain impact. This kind of situation, see whether the black spots on the skin can be wiped off, remove the skin, the fruit is intact, can be eaten. If there are pests in the fruit is not edible.

3, fungal mold. Lemon harvest, if not cleaned and waxed, storage and transportation process, easy to produce such problems. This type of black spot, black darker, mold is obvious, and even visible long hair. If it only grows on the skin, remove the rind and the fruit will still be edible due to the protection of the rind. If the flesh has moldy black spots, the fruit is inedible. It must be thrown away.