posted 10 years ago
Hi Matt (again!) Since most roots go easily to 4 to >10 feet deep, a septic field (are you pipes deeper than 4 feet?) is not really protected. Even grasses can go much deeper than the standard leachfield. Vegies like lettuce, tomatoes, beans, and many more can have at least some roots to go to 4 feet. Don't forget tree roots grow .5 to 3 times wider than the canopy, so many leachfields are prone to root intrusion from nearby trees. At least out in the woods where I live.
To buy the book go to robertkourik.com