botanical gardens is a collection of living plants designed chiefly to develop relationships within plant groups and save them from destroyed.
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.
There are many different things to plant. Some are for early spring, late spring, early summer, late summer, early fall, and late fall. There is also some for winter but very little. It just depends...
a 'landscaper' who designed the garden will install the plants.but a 'garden designer' or landscape architect' generally wont install the plants.