The present invention relates to the use of a mixture comprising, as active compounds 1) a herbicide (compound I) selected from the group of synthetic auxins consisting of (i) Phenoxy-carboxylic-acids selected from clomeprop, 2,4-D, 2,4-DB, dichlorprop, MCPA, MCPB and mecoprop; (ii) Benzoic acids selected from chloramben, dicamba and 2,3,6-TBA; (iii) Pyridine carboxylic acids selected from aminopyralid, clopyralid, fluoroxypyr, picloram and triclopyr; (iv) Quinoline carboxylic acids selected from quinclorac and quinmerac; (v) benazolin-ethyl; and (vi) amino-cylopyrachlor; and 2) a fungicide (compound II) selected from the group of strobilurines consisting of pyraclostrobin, orysastrobin, azoxystrobin, dimoxystrobin, enestroburin, fluoxastrobin, kresoxim-methyl, metominostrobin, picoxystrobin, pyribencarb, trifloxystrobin, 2-(2-(6-(3-chloro-2-methyl-phenoxy)-5-fluoro-pyrimidin-4-yloxy)-phenyl)-2-methoxyimino-N-methyl-acetamide, 3-methoxy-2-(2-(N-(4-methoxy-phenyl)-cyclopropane-carboximidoylsulfanylmethyl)-phenyl)-acrylic acid methyl ester, methyl (2-chloro-5-[1-(3-methylbenzyloxyimino)-ethyl]benzyl)carbamate and 2-(2-(3-(2,6-dichlorophenyl)-1-methyl-allylideneaminooxymethyl)-phenyl)-2-methoxyimino-N-methyl-acetamide; for synergistically increasing the health of a plant. In addition, the invention relates to respective mixtures for increasing the health of a plant.