There are a lot of ways to successfully garden but one of the basics is to have, and know how to have, good soil.
Soil is an amazing ecosystem with millions and millions of microbes. A teaspoon of soil has more micro-organisms than humans currently living on earth, each group of microorganisms with a specific contribution they make to the health of all.
A garden is only as successful as the soil in which a garden grows. Gives new meaning to this charming concrete garden sign, don't you think?