How and when to prune grape vines to obtain the greatest number of flowers

How and when to prune grape vines to obtain the greatest number of flowers

Jasmine vines often grow in the right place with little care, and will bloom best when pruned properly at least once a year. Knowing how and when to prune jasmine can do a lot to keep your vines colorful and healthy year after year. This guide covers Pruning the three main groups of clematisdepending on the time of year it blooms.

Clematis clusters

A long-time favorite in American gardens, clematis are perennials, most of which are vines that are classified into three groups. Each variety grows and blooms somewhat differently, so it’s best to know where your jasmine plant will fit before you start pruning your plant.

If you’re not sure which group your jasmine plant belongs to, keep track of its flowering time to find out the best time to prune.

Matthew Benson


Group 1 (early bloomers)

You can expect to do very little pruning in this first group besides removing broken, dead or misplaced vines. Jasmine in this first group produces flowers on older vines, so pruning should only be done after its second year, if at all.

The first group of jasmine plants bloom early in the season, so you can begin pruning, reshaping, clearing and deadheading the vines soon after they flower, allowing the vines to continue growing throughout the growing season and preparing them for the following season.

Group 2 (early summer trousers)

Group 2 jasmine includes many popular hybrids that are readily available in retail stores and online. This group of vines produces flowers on the previous year’s growth and a second flush of flowers on the current year’s growth. It blooms twice a year under ideal conditions.

Pruning Group 2 jasmine plants is a little more involved than Group 1 due to more frequent blooming, but it keeps the plants looking their best. To begin pruning, remove any broken, unruly or dead vines from the plant in late winter or early spring when the buds begin to swell. It is also advisable to remove any dead vines and leaves to reduce the chance of plant diseases and pests in the material.

The first round of pruning of live stems can also be done in early spring. Start by cutting back one-third of last year’s growth to about 12 inches of soil. Leave at least one strong-growing bud on each vine. The second group of clematis plants are relatively tolerant, able to bloom on both new and old stems, so a plant that has been heavily pruned can still grow well and continue to bloom the following year without problems.

Clematis can also benefit from a second round of pruning after the first set of flowers has finished to encourage more growth and a second wave of flowers later in the season.

Bob Stefko

Group 3 (mid-summer to fall bloomers)

The third group of jasmine vines produces flowers on new growth in mid-summer to early fall. Like Group 2, it includes a wide range of hybrid vehicles typically found in retail centres. A popular example Clematis (shown here), which has large purple flowers.

Like Group 1, Group 3 plants are exceptionally easy to prune. Cut these plants back completely every year to allow for a large amount of new growth that will bring new flowers. In late spring, when the buds begin to swell, cut all the vines back to about a foot above the soil level. Jasmine of all types grows at a surprisingly fast rate, and Group 3 plants rebound quickly.

Jasmine care tips

As with all plants, when living leaves, branches and stems are removed from a plant, they lose nutrients. To counteract this loss of nutrients and promote jasmine plants in the spring with resumption of growth, use a low-nitrogen fertilizer followed by a balanced fertilizer every four weeks throughout the growing season. Jasmine plants are heavy feeders and appreciate the extra supply of nutrients that allow them to thrive to the best of their ability.

Each spring, apply mulch around the base of the jasmine plant. Mulch helps retain moisture in the soil and keeps the ground cool. Apply a 3- or 4-inch layer of compost bark chips, shredded bark, or other organic mulch, and remove any weeds that may compete with the clematis roots.

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