Despite 
                  the difficulties of life, or perhaps even because of them, medieval 
                  people loved their pleasure gardens. Homes, whether peasant 
                  hovel or nobleman's castle, were usually dim, draughty, smoky, 
                  cold, and usually with a complete lack of privacy, so it is 
                  hardly surprising that people took whatever chance they could 
                  to spend time outdoors.
                Castles 
                  and manor houses always had pleasure 
                  gardens (as well as their herb and vegetable gardens), and 
                  these pleasure gardens were often frequented by every member 
                  of the household. Sometimes, however, the lord kept them for 
                  the exclusive use of himself and his family - Chaucer's noble 
                  knight of January kept his stone-walled flower garden under 
                  lock and key, which he guarded jealously. 
                Pleasure 
                  gardens were an opportunity for outdoor living, much as they 
                  are for us now. People ate, drank and played games within them, 
                  particularly chess and other board games. Music and dancing 
                  were also favourite occupations, as was illicit sex within shadowed 
                  corners - church court documents regarding annulments show many 
                  people became a little carried away with the wine, the scent 
                  of the roses, the freedom from spying eyes and indulged in romantic 
                  escapades they regretted later. 
                Great 
                  nobles and kings also held court within their extensive pleasure 
                  gardens on warm days: it was, again, an excuse to get out of 
                  draughty, cold and smoky halls into the sunshine and promenade 
                  about the garden. 
                Women 
                  loved to pick flowers and weave 
                  garlands, which they often then wore about their heads. 
                  The love of wearing flower garlands was not confined to women 
                  - many medieval romances mention knights wearing them as well. 
                  
                In 
                  short, there was very likely not much difference to the way 
                  medieval people used their gardens to the way we use them now. 
                  Gardens were for flowers and fruit, and they were for extending 
                  domestic life beyond the house, and into a 'tamed' natural world.