++++Very good point! Actually I hope the roots do grow into the pipes because they will get their food there more direct but tomato or veg. roots should not pose a problem as wood a tree root! I have no trees near by! I also plan on redoing the pipes every year if I have too since there is such easy access to them in only a foot of soil! I may even want to move the deeper compost dirt to the surface or use it in the fall for my new plantings in the spring sinc it should be very rich and the pes gravel will actually airate the top soil in the garden! Pea gravel and sand ae excellent admemdments to any garden to break up the soil! I also like to add some wood ashes to my garden from the burn pile!!toxcrusadr wrote:If this pipe has holes in it, and there are plants growing all around searching out nutrients and water, the roots are going to grow right into the holes and plug them up rapidly. Just like they do with sewer pipes if they can find a way in. Maybe with annual vegetables this wouldn't be too much of a problem, I don't know. If you have trees or shrubs anywhere in shouting distance, they'll be in there too. My grape vines and peach trees send roots 10 ft. or more into my garden, and I don't even want to talk about the silver maple and cottonwood not too much farther away. Just something to watch out for.