What Can I Use For A Potting Medium In My Planter Boxes That Will Keep The Planter Boxes From Being Too Heavy

Question

What does should I use instead of gravel in my 6 foot long planter boxes to keep them from being too heavy

Answer 1

Gravel is not a suitable growing media, unfortunately. If you are growing hydroponically, then I would try puffed silica stones, or puffed clay pellets. These options are lighter.

Otherwise, I would recommend using the potting soil of your choice, or soil according to the type of plant that you intend to plant.

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/types-of-potting-soil.htm