I hope it continues to work for you, Fishhead. Sounds like you don't mind maintaining it. I still believe it's not the best solution if you want *low maintenance*.
Agree. If you know of something better I'm all for it. Fabric and mulch has to be maintained but anything short of concrete needs maintenance. I had my annual 3 yards of mulch delivered yesterday so I am not looking forward to a lot of pulling and shoveling in the next few days. I try to buy the highest grade of fabric thinking it lasts a little longer. I don't think there are as many weeds, and I don't think they get as good a hold with the mulch and occasional pulling.
Oddly enough, the "cover it with rock" can be the problematic part, it creates traps for pockets of water and dirt. The fabric also helps trap washed dirt, sand, and bits of leaves. Next thing you know you still have weeds (or even trees and brush). And if you used coarse rip-rap, now you can't mow it either. I have seen a lot of trees and brush growing in rip-rap lined ditches here, though it does at least seem to help keeping the grass down.
I don't think your weeds will be coming from the bottom up. I think they will be coming top down, on the air or water, and get deposited on top of your fabric and grow just fine. Being in a drainage channel, they will be well watered.
I don't think even slabs or pavers would help you, other than limit growth to the seams. I suspect regardless of what you will use you will still end up either mowing or hand cutting brush. If you spray stumps afterwards, you could at least keep it from regenerating as fast...?
Sounds like two different approaches. Some, maybe most people put the fabric down, then cut holes in it so shrubs or bushes have a place to grow. But that's not me. I want to put a 3-5 foot strip down along a ditch, then cover it with rock and hope to never see any growth through it.

Here's a pic of a fence that will never need weeding or edging:[/url]
That is interesting, thank you.
I have an abundance of sun and water, which is attractive to things that grow-- both desirable and undesirable. Maybe instead of fighting the relentless growth that I could never win, I should instead embrace it and grow something of my choosing.