can I plant rosemary and/or garden sage over septic tank

Question

I am building a patio next to the septic tank. I can’t cover the septic tank with concrete (if something goes wrong with the septic system, I will need access). So I thought I would make an herb bed but I don’t want the roots to invade the tank.

Answer 1

The roots won't invade the tank. Herbs have pretty shallow roots. That being said, there are some other consideration to take into account. This article explains them:
https://www.gardeningknowhow.com/edible/vegetables/vgen/gardening-over-septic-tanks.htm