Yikes. If fertilize got on one of my pitcher plants I think I would re-pot.

Remember: sarracenias want nutrient deficient soil, sterile/rain water only, and a cold hibernation.

Many advice threads on the forum already.

Here is information from the North American Sarracenia Conservancy:

Sarracenia or North American Pitcher Plants are hardy wetland plants. Most species of Sarracenia are found in the southeastern states of Georgia, Alabama, Florida, and the Carolinas. However, their distribution extends as far west as Texas and as far north as Canada. Successfully cultivating them requires mimicing the conditions in which they are found in the wild.

Sarracenia tend to inhabit permanently wet fens, swamps, and grassy plains. These habitats tend to be acidic with soil made up of sand and Sphagnum moss. Frequently, the soil will be poor in nutrients, often continuously washed clean by moving water. The plants gain their advantage from their ability to extract nutrients from insect prey in this mineral-poor environment. The plants prefer strong, direct sunlight with no shade.

Sarracenia need a period of dormancy, or winter rest. During this time, growth is halted and much of the above-ground vegetation dies back. In the spring, growth will resume with the warming of weather and the lengthening of days. If you are growing your plants indoors, rhyzomes can be wrapped in moist sphagnum and placed in bags in the refridgerator for several months to achieve the dormancy period.

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