Question
is rain water in northern Virginia alright to give to a king henry Venus fly trap and a Drosera filiformis sundew plant?

Answer
Hi Andrew,

Rainwater is always great for carnivorous plants.  The only thing to be careful of is treated roofs that may have moss inhibitor on it.  That could be a problem, but otherwise just open collecting rainwater is great.  Rainwater has no minerals in it (anywhere on earth), and that is what cp don't like.

Good Growing!

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