Your pitcher plant does not require too much fertilizer as it feeds on insects too.  Feed it once during its growing season and it will thrive. The pitcher plant drinks water. The water it needs to survive is stored in a reservoir at the bottom of its lower leaves, called a "pitcher." When it rains, water flows into the pitcher and the plant uses this water to keep itself alive. The pitcher plant can use the water for a long time without drying out because it doesn't lose any water through its leaves.