Posted: 02/04/2017 at 12:52
Yes and yes. I would also cover the stones or gravel at the bottom with a layer of weed membrane or woven landscaping fabric. That will prevent the gaps between the stones being filled with fine soil over time and eventually reducing the drainage. Make the holes at least 10mm in diameter and make plenty of them.
Last edited: 02 April 2017 12:52:18