Logic would have you believe that adding gravel or pot shards in the bottom of a pot or container will increase drainage and this has been a common practice for a long time. More recently some gardening experts and scientists have declared this to be a myth, claiming that gravel does not increase drainage when placed in the bottom of a pot. That is the current thinking.
New science has now been published that debunks the claimed myth and concludes that drainage material in the bottom of a pot or container does increase drainage.
Key Takeaways
- New science shows that drainage material in the bottom of a pot increases drainage.
- Highly porous soils are affected more.
- Sand at 60 mm worked best.