This study was conducted to determine the effects of different intra-row spacings (10 cm, 20 cm, 30 cm and 40 cm) and seed harvest periods (1st harvest period; 100% ripening, 2nd harvest period; 50% ripening) on seed yield and quality in Mountain spinach. The research was established in 2023 according to factorial arrangement in randomized blocks in the dry experimental field of Iğdır University Agricultural Application and Research Center Directorate. The effects of row spacing and harvest peri