The most common cause of Calcium Deficiency is either a lack of available calcium in the soil or a pH imbalance in the soil which inhibits the absorption of all nutrients. However, it may also be caused by an excess of magnesium. Distinguishing Symptoms Leaves pale . They appear yellow in color. In cases of Calcium Deficiency, this symptom is especially noticeable on the new growth, i.e., in the crown.
Leaves are deformed or twisted .
In cases of Calcium Deficiency, the leaf tips hook back. If your Violet exhibits these symptoms, there is a good chance that it is suffering from a Calcium Deficiency. These symptoms, however, can also be due to deficiencies in other elements. Due to the complex interaction between plant nutrients, it is often very difficult to pinpoint the precise element causing problems. Often, an excess of one element will cause a deficiency in one or more other elements, and vice versa.