Cold water and ethanol extracts of two fungicidal plants (Zingiber officinale and Ocimum gratissimum) were screened for their in vitro effects on rot fungi of yam using 60 and 80% aqueous extract and 20 and 30% ethanol extract of each concentration. The two concentrations of aqueous and ethanol extracts were found to have inhibitory effects on all the rot fungi isolated from yam, 80% aqueous extract of Zingiber officinale inhibited Fusarium oxysporum to 66.70%, 80% aqueous extract of Ocimum. gratissimum inhibited Botrydioploidia theobromae to 60.00% also 73.33% inhibition of Aspergillus flavus was recorded using 30% ethanol extract of Zingiber officinale, the same concentration of Ocimum gratissimum inhibited Aspergillus niger to 70.00%. Both aqueous and ethanol extract of Zingiber officinale and Ocimum gratissimum had potential inhibitory effect on all the rot fungi.