Best greenhouse floor material

[MJMcKinney]

I am building a 14 x 24 greenhouse that will be a lean to attachment on the back of a garage.

I originally planned on pouring a concrete floor with pex tubing poured into the floor for heating purposes.

I have since learned that some feel that gravel - pea sized or larger -would be a better choice than concrete because the greater surface area of the gravel will help with raising humidity levels in the greenhouse.

Any advice on the pros or cons of concrete or gravel floors would be greatly appreciated.

Mike

[cowboy51278]

I have a friend who has a greenhouse your size, with concrete. He feels it dries out too quickly. I have a 14X24 myself. I have loose stone and I've been happy with it.