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.
Free Shipping. How deep (or tall) a raised bed should be depends on the rooting depth requirements of the plants you wish to grow, and whether the ground below the planter is made of healthy soil.hallow rooted plants such as lettuces, greens, annual herbs and most flowers can be grown in planters 11 to 16.5 inches tall, though even these plants may grow larger if given more soil. Taller planters also provide easier access and reduce the need for bending over.