Water proofing a sub-irrigated planter

Asked May 8, 2013, 10:37 PM EDT

I'm building a small raised planter for growing vegetables. I want to use sub-surface irrigation as a watering method. To retain the water I need to make the planter waterproof by lining it with some sort of plastic sheet or film. I assume the plastic sheet should be food safe. How can I tell if the a plastic sheet is food safe? Is there a better more "food safe" way to accomplish the waterproofing?

Jefferson County Colorado

1 Response

Thank you for your question. When burying drip irrigation hose, the extension literature does not recommend lining the beds with plastic or any other material. If you decide to do so, the plastic lining should specify on the packaging that it is food safe. Please let us know if you have any additional questions.