The present invention provides a combination of agricultural and horticultural fungicides, which remarkably improves controlling effects against plant diseases. A method for controlling plant disease, which comprises applying (a) 3-(2,3,4-trimethoxy-6-methylbenzoyl)-5-chloro-2-methoxy-4-methylpyridine, (b) prochloraz, and (c) at least one fungicide selected from the group consisting of a sterol demethylation inhibitor (excluding prochloraz) and an electron transport complex II inhibitor, to plants.
