After about five years they need repotting because the deep thatch of old leaves get in the way of the new roots reaching the soil from the growing plants. Most if not all Mexican Pinguicula can not self pollinate their flowers for physical reasons.

When should I repot my pitcher plant?

Pitcher plants, like other plants, do best when you repot them early in the spring before they have a chance to produce new growth. When your plant is still dormant, right before the spring arrives, remove it from its pot and gently remove as much planting medium as you can using a chopstick or other small object.

How do you take care of pinguicula?

Use chilly water for your temperate pings. The Mexican varieties can be kept on the tray system with overhead watering while they have carnivorous foliage in summer and autumn. When the rosettes change to their small succulents in winter, keep the soil on the dry side, dampening them only slightly and occasionally.