The adeniums are losing their leaves. Once, they haven't been fed well. Nutritional deficiencies are known to cause the leaves to fall, but not before the leaves turn yellow, red; or the tips and edges turn brown. When growing, they don't need a lot of water and leaves may drop too if they have been excessively watered. Presently however, the leaves must have ended up in the stomachs of these visitors: Oleander Hawk Moth Caterpillar. When newly hatched, the larvae are bright yellow and as they get older, the larvae become green to brown. Amazing, isn't it?
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