as long as you like
as far as i am aware hydroponic gardens are used because there is a lower rate of desease on plants, most deseases come from the soil. hydroponics eliminates this. they are also used in parts of the...
tomatoes Radishes or lettuce.
It is a small pond
There are 365 gardens in the Kew gardens. Mainly because it was made in 1 year and it wasnt a leap year so it represents the days of the year.