Abstract: A new and distinct cultivar of Spathiphyllum plant named ‘Spaamerigro’, characterized by its upright, outwardly arching and uniform plant habit; freely clumping growth habit; bushy and dense plants; glossy dark green-colored leaves; freely flowering habit; large white-colored spathes that are positioned just above and in between the foliar plane on strong and erect scapes; and good inflorescence longevity.