View Full Version : Why does hydroponic potatoes need a growing media?

12-22-2010, 11:29 AM
I was planning to put my potatoe sprout in a plug so the green plant part is sticking out of the tote lid. The potatoe would be soaking in the nutrients with a constant air supply pumping via air stone. All the sites I've read says to use some kinda growing media, straw, sand, etc. But they don't say why, my understanding is roots just need air and nutrients to grow.

What happens if you grow potatoes in just a deep water hydroponic system? No sprayers just an air source?

01-11-2011, 11:55 PM
I think you would want a substrate with hydro potatoes more so to maintain a healthy root structure than anything else. Of course potatoes will grow roots before even exposed to water or substrate, the sand, straw, clay pellets, vermiculite, or what have you will help guide nutrients through your potatoe plant's room system and ensure a healthier plant.

01-11-2011, 11:57 PM
Some good examples of substrate are listed here (http://www.squidoo.com/growroom) and they should apply to almost all vegetables, fruits, and herbs.

03-26-2011, 01:47 PM
cuz all roots systems need something to grasp on.