Chinese Money Plant brown spots

A fixed tan patch after direct sun differs from a soft enlarging lesion. Tiny pale dots on leaf undersides can also be normal deposits around pores rather than insects; inspect for movement or actual tissue damage.

Dry or corky marks

Reduce abrupt sun exposure. Raised corky patches can be associated with edema, when water uptake exceeds leaf water loss; check whether the mix stays wetter in cooler or dimmer conditions. The mark alone cannot establish that diagnosis.

Spreading wet spots

Keep foliage dry and separate the plant while investigating. Check roots if spotting accompanies wilt or repeated yellowing. Water after the upper mix dries and drain, avoiding a constantly saturated pot.