Jasmine is a tropical plant and it enjoys high humidity (50-80%). However, if growing it in a greenhouse, don't make it too wet for the plant, and make sure to provide a good air circulation at all times.

Prune overgrown Jasmine branches by up to a third of their length during the summer months to maintain the shape of the shrub. Container plants require more aggressive pruning to maintain their size, while plants in flower beds can be allowed to sprawl.