Posted: 26/07/2013 at 21:02
Found this in Google. Should be no problem for a raised bed.. Can I use Tanalith® E treated timber around food, water, vegetables or other plants?
Treated timber in general should not be used in direct contact with human food or drinking water during storage or preparation. Incidental contact of food with treated timber, such as in play grounds, picnic tables, decks and pools is fine as there is little or no potential for migration of the preservative constituents onto the food. Similarly treated timber is suitable for raised flower or vegetable beds, gardens, landscaping, mushroom trays, grape and tomato stakes, greenhouse uses and similar applications.