Truffles grow best when a number of conditions occur in the landscape and climate. Climate, vegetation, altitude and chemical composition of soil are all important.
Truffles grow best at an altitude of no more than 700 m above sea level. The truffle likes to be in soil which gets some light rain and be near a non-stagnant watercourse on a valley floor on a slight slope. The ideal soil for the truffle is one rich in limestone and potassium with low levels of phosphorous and nitrogen with a a PH between 6.8 and 8.5. The soil must be aerated but not too permeable. The outer layers must be quite humid even in the dry months.
This type of soil is ideal for the following host trees: