Bologna is home to numerous prestigious cultural, economic and political institutions as well as one of the most impressive trade fair districts in Europe. In 2000 it was declared European capital of culture and in 2006, a UNESCO âcity of musicâ.ologna is also one of the wealthiest cities in Italy, often ranking as one of the top cities in terms of quality of life in the country: in 2011 it ranked 1st out of 107 Italian cities.
Add topsoil to achieve a total topsoil depth of 10-15 cm (4-6 inches), after firming. The topsoil should be a loamy sand, sandy loam, clay loam, loam, silt loam, sandy clay loam or other soil suitable for the area.
Seeds that are sown shallow (up to 1 inch deep) should have 12 to 15 inches of soil to grow into. Seeds that are sown deeper than 1 inch should have a minimum of 18 inches of soil beneath them to grow into.If a seed is planted 3 inches into the soil, the total soil thickness should be at least 21 inches.The seed packaging will tell you how deep the seeds need to be sown to be successful.eeds that are sown shallow (up to 1 inch deep) should have 12 to 15 inches of soil to grow into. Seeds that are sown deeper than 1 inch should have a minimum of 18 inches of soil beneath them to grow into.