Of the several species of these sweet-scented shrubs there is only one that florists cultivate, and that now is most often conspicuous by its absence. But we all know J. grandiflorum. A plant that I can remember as long ago as I can think of any plant was a large bush of J. revolutum, which for the larger part of the summer was covered with its sweet, yellow blossoms. But that was in the temperate climate of the south coast of England. Here it is not hardy.
J. grandiflorum needs a temperature of 50 degrees during winter. The young growths root readily in the spring, and if planted out after frost is gone and kept pinched they make fine bushy little plants and can be lifted and potted, and will flower in October and November. They cannot be called showy plants and would receive no attention if it were not for their delicious fragrance.
The jasmine is no more a climber than a heliotrope, but if you want the flowers the best way is to plant one out at the end of a carnation house and in the spring prune it back, and during summer keep it pinched so that the flowering is retarded to late fall, when for weddings there is often a call for it.
Unfortunately when asked for jasmine for a bride's bouquet the sweet flower is gone, and again when the flower is ready the bride is not.
Any good loam will grow the jas-minum.