I have a large Oncidium Sharry Baby that I bought in bloom last spring. The plant is growing well, but has a few small spots on the tips of some of the leaves (the pseudobulbs are unaffected). Should I worry about this? - Aline M. Kuntz
The foliar spotting on Oncidium Sharry Baby, and related types, is not unusual, unfortunately, and is probably caused by a secondary infection of leaves damaged by poor watering practices. The water causes small bruises that are in fected by fungus or bacteria. It is simply scarring and usually does not spread, but preventing water from standing on the leaves will often prevent the problem. - Ned Nash
Unsightly spotting on Onc. Sharry Baby leaf.