Vihertantta Oy is rated 3 out of 5 in the category environmental services. Read and write reviews about Vihertantta Oy. Vihertantta Oy is a company operating in two dfferent business areas - gardening and b2b research consultation. What is in common for the two areas is the entrepreneur's passion for both, combined with professionalism and an open mind for challenges. The two business areas are operated under different trading names: VIHERTANTTA ("The Green Lady") is a jolly and broad-minded helper in all kinds of garden work. ROMEDIA offers professional, objective, independent and tailored b2b-consulting in media and market research.