Common signs include yellow leaves with green veins, small leaves, short shoots, stunted growth, poor flowering, and weak fruit set. Zinc deficiency is usually more visible on young leaves and new shoots.

Zinc deficiency is commonly seen in citrus, mango, apple, peach, plum, grapes, nectarine, and some nut trees. However, symptoms should be checked carefully because yellow leaves can also be caused by other problems.

Foliar zinc sprays may show improvement in new growth within 1 to 3 weeks, depending on plant condition and severity of deficiency. Soil-applied zinc may take longer because it must become available in the soil and then be absorbed by roots.

No. Yellow leaves can also be caused by iron deficiency, manganese deficiency, nitrogen deficiency, root damage, waterlogging, salinity, pests, diseases, or citrus greening. Always check the full plant condition before applying zinc.