Jasminum, or jasmine, grows rapidly, needs little maintenance once established, and has fragrant flowers. It is usually trained on walls, fences or a trellis, which makes it easier to prune. Jasminum needs minimal pruning to maintain its shape and control its growth.
Trim mature jasminum plants with loppers. Shape the top of the plant to make it flat or rounded.
Prune back any broken, dead, or diseased branches using loppers or pruning shears. The diameter of the branch will determine which tool you use.
Thin the branches on the interior of the plant to let in more sunlight. Prune no more than 1/3 of the internal branching so that bloom production isn't affected.
Prune back any vines that are growing awkwardly from the support system or that are intertwining with foliage from other plants.