The key to getting the most out of an indoor primrose plant is to keep it where it receives bright light (but not direct sunlight), stays evenly moist and as cool as possible. In our winter climate, a sunny window that has a sheer curtain is almost always bright and cool. Direct morning sunlight is great, but avoid the afternoon sun. Ideal temperatures for an indoor
Keep in mind that while primroses need to stay consistently moist they cannot tolerate soggy soil.