Don't remember having this problem before, but my Purple Oxalis (Oxalis triangularis subsp. papilionaceae 'Atropurpurea') is breaking out in acne. Well, not likely - but that's what it looks like.
It's spreading across the entire row of plants. Many plants are losing all their leaves and disappearing.
It starts with the acne, then the leaf seems to almost disintegrate. Online research indicates that Purple Oxalis has no severe pest problems, but can occasionally be damaged by spider mites or leaf miners.
But I've seen no pictures of leaf miner or spider mite damage that looks like this. Is this happening to anyone else?