Applying a two inch coat of mortar on top of plastic will function as a weed barrier with added weight.
Best weed barrier under decomposed granite.
However weeds will still grow from time to time especially as time goes on and the rock breaks down which takes quite a while and the debris gather from plants birds etc.
Natural decomposed granite this works best as a mulch replacement in.
Spread out the weed barrier fabric along the length of your path before adding any layers of dg.
Water permeable it is the surface of choice for both eco and budget conscious homeowners.
The mortar takes the place of mulch and provides a steady base onto which to set your stones.
Weed free surface to create the best and most.
However she doesn t use it in flagstone paths where she is going to plant succulents or little groundcovers in between the stones.
Decomposed granite decorative gravel and weed fabric materials do not prevent weeds in landscapes and often can increase weed growth.
Best bruce answer hi bruce from what you are saying i am assuming that you have used the loose dg.
It is designed to be a long term solution to weed control and it comes lined with pre printed rows that make it easy to get your plants or flowers exactly straight or to plan out a perfectly symmetrical garden.
This best landscape fabric under rock comes in several sizes so you can customize it to suit your needs.
You may need a layer of gravel under layers of cured decomposed granite.
It may be bad under bark dust mulch soil or compost but it works very well under river rock gravel decomposed granite or flagstone.
The reason why it does provide a weed barrier but it also prevents the stone from sinking and disappearing into the soil below.
We have had pretty good success with this method.
See my page on decomposed granite to read about the different types you can use.
Occasionally however grass and weeds sprout in even firmly compacted gravel.
Add a weed barrier optional if you re worried about weeds pick up a weed barrier when you purchase your decomposed granite.
Mix 1 2 bag of type s mortar eight shovels of sand and three gallons of water.
Garbat has used weed barrier for example under thick decomposed granite pathways where she doesn t want plants to grow and where it won t surface.