Iron deficiency chlorosis
Eisen-Mangel
This description was machine-translated.
How to spot it
In iron chlorosis, the newest leaves turn yellow while the veins stay green, a clear net pattern. Usually the soil does not lack iron, but it is unavailable to the plant at too high a pH. Blueberries and raspberries, as acid-loving plants, react especially sensitively, for example when the soil is too lime-rich or when you water with hard water.
Prevention
Lower the pH in the root zone with rhododendron/moss soil, conifer compost or sulfur, blueberries want pH 4.0 to 5.0. Prefer rainwater over hard tap water. In acute deficiency, an iron-containing fertilizer or chelated iron helps, but long-term the acidic, humus-rich site matters.
Affected plants
These plants in our database are especially susceptible.
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