I recommend Brian's Botanicals and NS Exotics. They also sell on eBay. Great growers--great quality plants. http://www.briansbotanicals.net http://www.nsexotics.com

trees do NOT... can NOT.. invade modern chemically welded PVC pipes ... they can very easily do so .. in old fashioned sewer lines.. like at the link if yours were dug out... as you state.. i cant believe they do not modernize the pipe system ... perhaps you should be asking that contractor his opinion??? a very simple primer on tree roots... some say.. a root mass can be 2 or 3 times the size.. of what you see above ... but do NOT confuse yourself into thinking is is in the same shape ... most are pancake flat.. and only a few feet down in the soil [unless there is a leaking fertilizer source down there.. like a sewer pipe] .. see pic below on the root mass of a silver maple .. unless i forget .. lol .. almost all of its roots are there... in the space my ball cap took ... and the large ones going deep ... were headed towards a septic field... go figure on that ... i dont know either of your trees.. but had green and white ash.. both tended toward surface roots ... which was a big problem for me .... i wnated them deeper ... ken Here is a link that might be useful: link

This was recently discussed on another thread. Might wanna check that out: http://forums.gardenweb.com/forums/load/hosta/msg0712573627964.html Here is a link that might be useful: Mail Order Hosta Thread

I highly recommend Sebright Gardens in Brooks, OR. Fortunately, I am close enough to drive down once or twice a year to purchase. However, I have ordered specific plants to email as gifts to friends and was delighted to learn that they shipped big, healthy plants. Check out their catalog for some 'hard to find' varieties. If you get to the Northwest, walk down their hoop house to see 500+ varieties arranged in alphabetical order and then wander through their spectacular display gardens.It is a wonderful place to see full size varieties of hostas amid other shade loving plants and big trees. Here is a link that might be useful: Sebright Gardens