Awesome Graphic Design: Those cards are usually printed on paper with some special effect like filmed or polished. The words on it can be cut in relief or intaglio. And you will also find some really creative combination of color and texture.
As a gardener I adore this card. It is a lawn care service printed on an envelope with grass seed enclosed. You can also plainly see their logo which is simple and fitting. The palette also refers back to the idea of a yard.