Johnson Grass in the garden

I had about 2 weeks that because of things going on I did not get out into my garden to weed and with my oldest working she could not come and help me.  Now I have a beautiful garden, if you can find it under 3 foot tall johnson grass!

You can see the stand of grass in the back ground.  I have mulch (wood chips) and cardboard down on about half of it and that has definately helped but there is atill a LOT of grass and weeds.

The trailer is how much grass came out of one row

My daughter is coming over today to get busy on finding the rest of the garden!!!

If anyone has any wisdom in how to battle and hopefully defeat this stuff please let me know!