If the foliage of the fig tree suddenly turns yellow and falls off, this could have various causes. A virus or iron deficiency are possible. Too much moisture, to which the fig reacts very sensitively, is partly responsible for both triggers.

The Fig Mosaic Virus
When infected with this virus, yellow leaf spots appear first, and as the disease progresses the entire leaf turns yellow. The attractive lobing of the leaves shows deformities. The virus is common in figs exposed to stress in humid and cool summers or overwatering. If possible, reduce the amount of water and avoid waterlogging in the future.
Leaf drop due to deficiency symptoms
A common cause of yellowing of the leaves is a lack of nutrients, primarily iron deficiency. This is caused by waterlogging, soil compaction or a planter that is too small. Repot the figs in fresh, loose soil and reduce the watering. It is enough to water the plant when the substrate on the top feels dry. Always discard excess water in the coaster.
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