You KNEW the answer before you asked, Filix. Obviously he needs something that drains a little better than your 'average-out-of-the-bag-soil'.

Al

Yes Al your right. Window boxes are so shallow 6"? That they need a soil with a very low P.W.T. It's just like you said recently. When most people see the gritty, they think "how can something grow in that"? I also thought that if he wont give up the peat mix, maybe I could improve it by adding perlite. The wetting agents just adds insult to injury. filix.

I just reread my post & I see where it could look like I was chastizing you, but I wasn't. I had a smile on my face & what was going throuugh my mind was, "You've learned what makes a good soil & separates a good one from a bad one, so it's pretty cool that you were already armed with the info you needed to decide". Just wanted to make sure you didn't think I was being crappy. ;o)

Al

No way Al. Didn't take it that way one bit. Thanks for helping me understand this stuff. filix.