Welcome to the forums! By boggy they mean terrestrial, but constantly wet. The plants should be kept in a water tray almost as deep as the pot, and the water level should be kept approximately half way up the pot. To mimic natural conditions, you can fill the tray all the way to near the top of the pots, and then let it dry out before refilling.
Have you cared for carnivorous plants before? Please keep in mind that Sarracenia and almost all other carnivores are highly sensitive to soil and water conditions. Soil must be nutrient free, composed of media such as sphagnum peat moss, perlite, silica sand and long fiber sphagnum moss. Absolutely no fertilizer until you're familiar with the various species of CPs and their various needs. Fertilizer will kill most carnivorous plants in short order.
Water must be chemical-free, fertilizer-free, and mineral-free. For most people, this means no tap water, and by no tap water I mean no water from the tap, no water from the tap that's been boiled, or allowed to sit and cure, or filtered with a drinking water filter. Treating water in this way will not remove the mineral hardness, which is what does CPs in. You need distilled or reverse osmosis water, which is available at most grocery stores. Many newer supermarkets have reverse osmosis water filters in the store, and you can fill your own jugs for about fifty cents a gallon. You can also collect rainwater for your carnivorous plants, but it's a good idea to know where you can find good water in the event of low rainfall.
Here on the forums we see too many people lose plants because they think that their tap water is OK. Please do not try and find out; water your plants with water that you know for sure is OK - rain water or store bought - and if you really, really want to use tap water, do some research before giving it to your plants. Most tap water will not make your plant immediately crumble to dust and drift away on a breeze, but over a period of weeks or months it will weaken and kill your plant, possibly before you notice anything is wrong. To find out if your tap water is OK, you need to contact your water utility and find out what kind of hardness your water has, among other things. If the water is chlorinated, you'll need to let it sit out so that the chlorine can evaporate from it, and there are other things to be concerned about with tap water. So don't waste your time! Your plants will thank you if you spend the extra two dollars a month to give them clean water.
CPs are lots of fun and once you get to know them, they're very easy to raise. I suggest you start here at
Barry Rice's CP FAQ, but take it with a grain of salt! Barry can sometimes make things seem more difficult than they actually are, but his instructions are sound and built on many years of experience. Another good way to learn about the various genera of plants is to look around the forums here - new people are constantly coming by with questions similar to yours, and there are a lot of threads around to answer them.
Good luck!
~Joe