Recent cold damp weather has caused Black Leg (a grey furry Botrytis mould on black canker) on this geranium (pelargonium) cutting. This happens at the stem base where it is touched by too damp compost. Once it has reached this stage it is eventually fatal. There is no way back.Have disposed of it before it starts releasing spores (a fungus's equivalent of seeds) into the air.
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