Primroses, an outdoor perennial,  can be grown indoors as houseplants if you provide the right climate. These plants remind me of African Violets with their likes and growing conditions. I find that mixing the two plants in their own growing climate works well. The Primrose (primula) likes a growing climate with cool night temperatures of 50-60° F. It also likes filtered sun and moist soil. Daytime temperatures must not exceed 80 degrees. My...