Question
what type of grass would do well in a heavy shade area like me backyard. i cant seem to keep a healthy thick yard, the grass seems to be very thin and sensitive. we cant even walk on it  without damage to it.

Answer
If you're in Cool Season Grass country, you're in luck.  The BEST Shade Grass is a state-of-the-art Kentucky Bluegrass variety imported from Germany, 'Supina' (Poa supina).  

This is not a drought-tolerant variety.  And it costs a bundle.  But no Grass grows better in low footcandles.  By blending it with other grasses you can soften the sticker-shock.

Supina is a slow growing Bluegrass.  Sowed Supina takes 2 to 3 weeks to get off the ground -- so to speak.

You can get it on the internet at Seedland.com and at some Garden Centers where they sell premium priced Seed.  Put some flagstones out for regular paths so that you don't widen your 'path of destruction' as you traipse thru the yard.  In deepest Shade, and directly under Trees, Hostas and Pachysandra are more suitable.

Good luck, keep me posted.

L.I.G.