Lynn the reason you do not need the holes in the plastic is because these ;pots lay on their side. When it rains they do not get any water. If you set them up and water as soon as you lay it back down the water runs out so it dries up.
I killed Sedum and Semps until I realized what was happening. Added to the fact that this one was terracotta it was a killer pot.
The key with these is keeping moisture in the pot.
If you punch hole in your plastic you defeat your purpose because it is going to run out and dry up if you are having a hot summer your plants are dead. Your drainage is the big planting hole in the front of the pot and all your water is going out of that hole as soon as you lay it down.
They are cute pots but you have to throw out the normal thought of drainage of a pot sitting up and getting watered.
