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Clematis Care

Jackmanii Clematis are beautiful flowering perennial plants. There are several hundreds of species of clematis worldwide, and most of them are climbers. Most of the species are hardy, however some species, in particular most of the evergreen clematis, can only tolerate a few degrees of frost before they die. Clematis have a variety of bloom times, varying by species. If planned properly, a clematis garden can have lovely blooms from late winter all the way to late autumn. This entails a variety of clematis with differing bloom times to be planted together or spread throughout the garden.

Most varieties of clematis produce only a single bloom, yet some produce a dual bloom. The blooms of clematis range in size from about one inch to ten inches. The blooms of the clematis plant will often change color throughout the life of the plant. This occurs more often when the flower is grown in full sun conditions.

Clematis are very particular about what climate they grow well in. Clematis will grow better and have nicer blooms with a dormancy of only about six weeks. Night temperature colder than 45 degrees will generally put the clematis plant into dormancy.

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Clematis Information


Q: Are clematis perennial or annual?


A: Clematis plants are perennial in many areas in America. This depends on the specific variety in question. Most clematis varieties are hardy in zones 4-9. This means that most clematis will thrive and return year after year in these zones.


Q: Are clematis poisonous?


A: Yes. All parts of the clematis plant is poisonous to humans, cats, dogs, and horses in particular. It is recommended that you wear gloves when pruning these vines. You should keep clematis away from areas where your children or pets can reach them. If you know that a person or pet has ingested clematis, you should seek the advice of a doctor or vet immediately. Clematis often have a very bitter taste that acts as a deterrent for animals who may eat the plant.


Q: Do clematis bloom all summer?


A: The bloom time for clematis varies with different varieties. Many varieties bloom in early summer and last until late summer or early fall. Some varieties have been bred for longer lasting shows. Jackmanii clematis is one variety that can bloom from late June to late September in many areas of the country. Try to plant multiple clematis varieties that bloom at different times to optimize your bloom time.


Q: Are clematis deer resistant?


A: Clematis can be occasionally eaten by deer. This can be especially true if the deer do not have a lot of food choices in the area. Clematis has a very bitter taste and is poisonous so it will not usually be the first choice for deer.


Q: Are clematis evergreen?


A: Many varieties of clematis are not evergreen. There are a few varieties that are evergreen like Clematis armandii.


Q: Do clematis need sun or shade?


A: Clematis generally like a good amount of sun on the flowers, foliage, and stems. Most varieties prefer at least 6 hours of direct sun each day.


Q: Should clematis be deadheaded?


A: Clematis should be deadheaded in order to encourage growth and maintain a beautiful vine. This can be done by removing the old blooms and trimming the vine just above a nice new bud. Deadheading should be done in spring after the last frost of the year. It should also be done in between bloom cycles if it is a variety that blooms multiple times in a season. In most cases you should not deadhead at the end of the season because doing so could leave the plant vulnerable over the winter.


Q: Do clematis attract bees?


A: Yes bees love clematis in most cases. There will be many flowers filled with pollen that will catch the attention of bees. If you are trying to attract beneficial bees to your garden, try to plant multiple colors. Bees specifically love bright colors like blue, yellow, and purple. Try planting clematis that is native in your area to invite the most bees possible.

  • Growing Clematis And Roses Together

    Clematis And Rose FlowersFrom Rhonda Fleming Hayes. A Master Gardener and contributing writer for Nature Hills Nursery.

    The rose is probably the most well-known, well-loved flower in the garden. Clematis is called “queen of the vines’. Such is the beauty of these two flowers; they can hold their own in any landscape. Combine them, and the effect is magical.

    I first saw this done while living in England. The British are masters when it comes to roses. Roses plants aren’t left to stand alone with their bare legs exposed. They are integrated in the herbaceous border or underplanted with perennials like lavender or lady’s mantle in formal beds. Their climbing roses often intermingle with twining clematis. Continue reading

  • Growing Clematis

    Growing ClematisGrowing a clematis vine is a fun and easy activity for any gardener. Clematis are relatively easy to care for, if the proper conditions are given. Most clematis require full sun near the top and cooler shade near the base.

    Clematis also need a good amount of water in the soil, and the level of water should be consistent throughout the growing season. The best thing to do when growing clematis is to mulch heavily near the base of the plant. This will allow the soil to maintain moisture and also provide shade for the root system.
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  • Dividing Clematis

    Dividing Purple ClematisDividing clematis is one form of propagation of the plant. Dividing clematis consists of taking one plant that has grown well, and dividing it at the roots into two or more plants. These plants can then be transplanted to different areas of the garden to spread beauty elsewhere.

    When dividing clematis plants, it is important to know what species the clematis is. Different clematis will bloom at different times, and thus division must be done at different times as well.  Dividing clematis at the wrong time will hinder new season growth, limit blooms and has the possibility of even killing the plant.

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  • Clematis Pruning

    Pruning ClemantisClematis Plant pruning is the most important factor when considering how and when a clematis will bloom. Pruning clematis improperly will never kill the plant, however it will likely delay the bloom. Not pruning the plant at all will allow the plant to bloom, but proper pruning will cause more and longer blooms. All clematis should be cut back the first early spring after planting. After this, the time and amount of pruning depends on the type of clematis being grown.
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