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:

Farnia (Quercus robur)

Farnia (Quercus robur)

Turkey Oak (Quercus cerris)

Turkey Oak (Quercus cerris)

Durmast Oak (Quercus petraea)

Durmast Oak (Quercus petraea)

Downy Oak (Quercus pubescens)

Downy Oak (Quercus pubescens)

Black Poplar (Populus nigra)

pioppo-nero

Silver Poplar (Populus alba)

pioppo-bianco

Cottonwood Poplar (Populus deltoides cv. carolinensis)

pioppo-carolina

Goat Willow (Salix caprea)

salicone

White Willow (Salix alba)

salice-bianco

Linden Tree (Tilia platyphyllos)

tiglio

Hop Hornbeam (Ostrya carpinifolia)

carpino-nero

Hazelnut Tree (Corylus avellana)

nocciolo

Images courtesy of Centro Nazionale Studi Tartufo