Primroses are hardy flowers that can grow indoors or outdoors. They are popular indoor blooms because once they start blooming, they can easily be induced to create a long-running, colorful show. If you want to grow primroses indoors, you will not need much in the way of equipment. Just tend to some basic needs and watch your flowers start to bloom.
Plant the seeds in the pot. You can use regular potting soil and houseplant fertilizer. The fertilizer is not necessary in most cases, but it can make your plants grow a little larger and faster. Keep the interior temperature of your home between 55 and 70 degrees F or you may prevent the seeds from germinating.
Water the plants thoroughly whenever the surface of the soil is dry to the touch. Do not wait for the entire pot of soil to dry out, but replenish the water whenever the top of the soil is dry when you do not push your finger into the dirt.
Give your primroses bright, indirect sunlight. These plants should not be placed in direct sun, but they do need a lot of light in order to thrive. If necessary, move them from room to room to keep them in the light most of the day.
Turn the temperature down when the plants start to bloom. The blooms will last longer if your house is closer to 55 than 70 degrees F.