Do I need drainage holes in my plastic planting containers?

Question

I have some herbs growing in some outdoor planting containers, however there are no drainage holes in the containers. There is a plastic meshing at the bottom that creates a gap between the bottom of the container and the soil, however there is water gathering in this gap. Will the water eventually evaporate or will it cause issues? I’m not sure if I can create any holes in the containers. The plastic is very sturdy.

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Answer 1

Yes, you should drill some drainage holes or you risk root rot. In order to do it safely with an electric drill, you should empty the container and turn it over to drill the bottom. Use a 3/8" to 1/2" drill bit for 4 to 6 holes. If that's not available you can try using a screwdriver to jab some holes in it.

https://www.gardeningknowhow.com/special/containers/container-gardening-supplies.htm