They are small flowers, usually with five petals or more, that grow among bright green leafy foliage.
They grow in clusters off of stems. You can have your pick from colors like pink, yellow, red, blue-violet, and white.
Some are also two toned: one color in the middle, with another color edging the petals.
Most of the species of this plant are very difficult to grow. There are however, a few of the species that are easier to grow.
Japanese Primrose is very easy to maintain. Just make sure it is planted in a soil that is moist, and keep it well hydrated.
Those that are hard to grow, plant them in areas with partial shade, and in soil that is moist with a slightly acidic pH.
The easiest way to grow them is to begin by planting already purchased plants. Start right in the beginning of spring.
Since they like a soil with an acidic pH, you could put some type of acidic organic matter, or fertilizer to boost their growth and longevity.
The flowers will last for several weeks. Once they go away, the foliage will last until the middle of summer. Then they go dormant until the next spring.
If you choose to grow these plants by seeds, they will take a while longer to grow. The best way to grow them is by dividing and replanting.