The conclusions of the European Food Safety Authority (EFSA) following the peer review of the initial risk assessments carried out by the competent authorities of the rapporteur Member State, Estonia, and co‐rapporteur Member State, France, for the pesticide active substance Streptomyces strain K61 are reported. The context of the peer review was that required by Commission Implementing Regulation (EU) No 844/2012, as amended by Commission Implementing Regulation (EU) No 2018/1659. The conclusions were reached on the basis of the evaluation of the representative use of Streptomyces strain K61 as a fungicide on fruiting vegetables, leafy vegetables, bulb vegetables, pulses, ornamentals, aromatic herbs and root crops, onions and seedlings, in permanent greenhouses and walk‐in tunnels. The reliable end points, appropriate for use in regulatory risk assessment, are presented. Missing information identified as being required by the regulatory framework is listed. Concerns are identified.