Do I Need Drain Holes in a Window Box

It’s absolutely necessary that a window box have drainage holes so plants do not sit in soggy soil. If your box does not come with holes, you will need to drill holes in the bottom before installation.

How many drainage holes should a window box have?

Drainage Holes The holes give the excess water an escape route so it doesn’t stay in the soil. Many flower pots come with only one drainage hole. Others don’t have any holes at all. If the container is made from a material you can drill, add two or three more drainage holes.

How do you use a planter without drainage hole?

How to Use Pots with No Drainage Holes. Some experts suggest using a layer of pebbles as a sort of drainage layer in those pots without drainage holes. This technique allows excess water to flow into the space with the pebbles, away from the the soil and therefore the roots of your plant.