Question
Been growing P. moctezumae for some time now, but it never seems to produce much of a root system.  It isn't suffering too much I don't think, but it isn't thriving either.  I can pick the rosette up right off the surface of the pot.  I tried using grittier potting mix without any peat, but this didn't seem to work much either.  It is grown with good light in a greenhouse, pot not sitting in water, western Oregon.  Should I try a potting mix even more open, say with more perlite/ pumice?

Answer
Hi Deven,

Try this.  Mix your soil at two parts sand, one part peat, and one part perlite.  Do this dry, then to that add one tablespoon of dolomite lime to each cup of soil.  Once you've mixed it wet it down thoroughly and re-pot your plant into that mix.  Since we started adding the lime to our butterwort mix we've seen a dramatic improvement in the health of many species.  Be sure to use powdered lime as opposed to the prilled types.  Everything else you're doing sounds good.  If you're not doing a light foliar fertilization, that helps too.

Good Growing!

Jeff Dallas
Sarracenia Northwest
http://www.growcarnivorousplants.com