It exports filberts (for which product it is the centre), walnuts, hides and timber.
The county is specially famed for cherries and filberts, but apples, pears, plums, gooseberries, strawberries, raspberries and currants are also largely cultivated.
In some cases apples, cherries, filberts and hops are grown in alternate rows.
Catania has a considerable export trade in sulphur, pumice stone, asphalt, oranges and lemons, almonds, filberts, cereals, wine (the total production of wine in the province amounted to 28,600,000 gallons in 1905) and oil.
Grafted filberts are less liable than others to be encumbered by suckers at the root.
Plantations of filberts are made in autumn, in well-drained ground, and a space of about io ft.