my leech systems are fairly deep where my garden is as it runs back and forth down a slope.
UP at the top where my garden is It is over a foor down to the gravel. My is built where it has the leech drains,.. then about 6 or so inches of gravel on top of thay.. then a foot or so of dirt on top of that.
Since most garden plans root fairly shallow... I am guessing I shouldn't have a problem with roots getting into the lines.. but just to be safe... sounds like I should check the "average" depth for various plant roots, and anything that goes pretty deep.. just avoid planting them on top of the lines.??
Life is great..... but if you get lemons - compost them
Near Atlanta GA... newbie to gardening & Composting