Question
I have noticed moss growth on the surface of my large ceramic Sarracenia bowl, and pulled it out, but I would like to know if I should leave it alone and let it grow for added moisture retention.  It wasn't a huge amount and looked like it could be spaghnum moss.  I keep my bowl in the patio in full sun; the soil is 1 part clean, packaged playbox sand to one part peat moss.  I brought some of my sarracenias from Santa Cruz, CA and bought the rest from you in 2009 and more at your last summer open house.  I'm not sure what my growing region number is as everyone up here has a different opinion (sigh)  but I live in Fisher's Landing in East Vancouver, WA.  If you could let me know what it actually is, I would be eternally grateful.
Thank you, Cheri

Answer
Your growing region is essentially the same as ours, so you can follow the winter care instructions as outlined in our online care guide.
http://www.growcarnivorousplants.com/careguides

Unless you can properly identify the moss as sphagnum moss, you should pull it out.  There are hundreds, if not thousands, of species of moss.  There are many types of moss that will overgrow in pots, smother plants, and harbor fungal spores.  So you're best off pulling it out unless you are certain it's sphagnum moss.  You can go online and compare it to photos of known species of sphagnum moss.  


Good growing!
Jacob Farin