Noob Question About Gravel

[Fairview]

I see a lot of pics with some sort of gravel around the plants. Is this a cosmetic top dressing or does it serve a purpose?

Thanks

[Tom in Tucson]

Some people use a top dressing as a decorative addition like this,:



but for some species like this;



which leaves rot easily when kept wet too long. It helps to keep them out of contact with wet soil.

[meridannight]

On some plants I cover the whole top layer with gravel to reduce water evaporation from the surface and thus prolong moisture retention of the soil. I suppose some growers might do it for appearance.

[mickthecactus]

I do the opposite for Stapeliads as I want them to dry out quickly, they are so rot prone. But if I was showing them they would be top dressed.

Lovely plants Tom if they are yours.