Foliage might appear dry, withered, and even black on affected plants. 2020 Invasive Plant Factsheet: Sweet Autumn Clematis (Clematis terniflora) It produces tremendous amounts of seed, allowing it to escape from cultivation into fencerows and roadsides where It forms a dense tangle that can smother native vegetation. ***OFFICIAL Sweet autumn virginsbower (Clematis terniflora) ASSESSMENT*** Answers are highlighted in yellow, comments are inserted in . Prune aggressively in fall or early spring. Roughly 1 inch of water per week, through rainfall or irrigation, is generally sufficient. It is native to Japan and China and was introduced into the United States as an ornamental plant. It has a fast growth rate, gaining a few feet in length each year. Hi sugarshokt, I've grown Sweet Autumn Clematis (C. terniflora) for about five years, I guess. There is an invasive version (Clematis terniflora), which should be avoided. Grow on a trellis or a … 2015-41595-24254 from the USDA National Institute of Food and Agriculture. Clematis terniflora, or sweet autumn clematis, is moving out of cultivation in Indiana and we’d like to know if you’ve seen it in the wild. (5 to 7.6 cm) long. Withhold additional water during rainy spells, as this plant doesn't like to sit in wet soil. Powdery mildew, leaf spots, rust, and viruses can also affect the plant, though generally, they are not fatal. Fungicides for Disease Control on Clematis. It is C. terniflora that you need to be careful with. Seeds are best started in the late fall to early winter, and seedlings can be moved outside once nighttime temperatures remain above freezing. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture. There exists a good-looking specimen with small, abundant, fragrant white flowers. Then, repeat every few weeks throughout the growing season. David Beaulieu is a garden writer with nearly 20 years experience writing about landscaping and over 10 years experience working in nurseries. Looking for advice on the advisibility of planting Sweet Autumn Clematis (clematis ternifora). Native to Japan and China. With these issues, look out for discolored foliage, small bugs on the foliage, and the plant generally failing to thrive. italics . I have read that sweet autumn clematis fits the bill but is considered invasive in some regions. Sweet autumn clematis has average water needs. It is considered invasive in many areas of the eastern U.S. But it is a bit slow to get going in the spring so now I wonder if I had been more patient, would it have come back from the roots. I'm in Kansas City and would put the vine on my eastern fence, which gets a good dose of afternoon sun. These masses of white flowers are borne on vigorous twining vines that will cloak a decorative support such as an arbor or ramble along a fence or pergola. Like all clematis species, this plant is a heavy feeder. Richard Webb, Self-employed horticulurist. The similar-looking, but not very fragrant, Virgin’s-bower, C. virginiana, native to eastern North America blooms about the same time, and could be used instead, but is not as readily available in the horticulture trade. I got rid of my main plant 3 years ago and I still have them come up in several places in my yard. Sweet autumn clematis (Clematis terniflora) is a perennial flowering vine that produces sweetly fragrant flowers in the late summer and early fall, well after most other clematis plants are finished blooming. Sweet autumn clematis is listed on the South Carolina Exotic Pest Council Invasive Species List as a significant threat. It is considered a Category II invasive plant in Florida (north and central) and some other eastern states, meaning invading native plant communities but not yet seen as displacing native species. However, if the clematis would be bad news, can you suggest Ny other vines that might grow in bright shade in containers? The only thing “sweet” about the sweet autumn clematis (Clematis terniflora) is its fragrance. It is native to Japan and China and was introduced into the United States as an ornamental plant. This plant may be less frequently damaged by deer than other clematis species (hybrids). Stem cuttings can also be easily rooted. This charming plant is called sweet autumn clematis plant or terniflora, paniculata . One year it didn't come back and I had to replant. I your share your love for sweet autumn clematis, I loved the one I had but unfortunately here in middle Georgia it becomes very invasive. Anyway, it's lovely. Sweet autumn clematis grows vigorously in the climate conditions across its entire hardiness range from USDA growing zones 5 to 9. Sweet Autumn Clematis can be considered invasive in warmer climates, as it is native to New Zealand. After flowering is complete, the vine should be rigorously pruned. As with other clematis species, sweet autumn clematis is prone to clematis wilt, a potentially fatal fungal disease. Sweet autumn virginsbower is documented to occur in much of the eastern U.S. from Minnesota to Vermont, south to Texas and Florida. Companion Plants: Japanese Maple, Climbing Rose, Daylily, Hydrangea, Butterfly Bush. Sweet autumn clematis is a vine that produces an abundance of small, white flowers in late summer and early autumn. According to the U.S Forest Service, Invasive species have contributed to the decline of 42% of U.S. endangered and threatened species, and for 18% of U.S. endangered or threatened species. This can take six to eight weeks. What troubles a lot of novices at gardening is whether clematis invasive. The leaves are opposite, compound (with three to five leaflets), and the margins are entire. Sweet autumn virginsbower prefers sun to partial shade and is found invading forest edges, rights of way, and urban green space especially near creeks. Insect pests include aphids, slugs, snails, scale, earwigs, and spider mites. Discover beautiful U.S. native plant alternatives. When covering wood fences or similar structures, a sweet autumn clematis in bloom gives the appearance of fleece. If you are worried by the question “Is this species of clematis invasive?”, you will soon find the answer. It is considered invasive in many areas of the eastern U.S. Seed heads have long, silvery-gray, feather-like hairs attached. Table 2. However, sweet autumn clematis should be planted with caution, as it is a very vigorous vine that can choke out nearby plants. The flowers look pretty much the same as virgin’s bower, so you have to look at the leaves to tell which is which. They will even reseed into grassy areas. Leaflets are each 2 to 3 in. Use the appropriate fungicide or insecticide for the problem. Prune sweet autumn clematis after flowering finishes in the late fall. By September 2013 it had grown into a beautifully draped vine that graced the railing of the deck. Find where this species is invasive in the United States. It can self-seed, and has escaped cultivation and naturalized in many parts of the USA. By applying a low-nitrogen fertilizer, such as 5-10-10 in spring, you’ll give your vine a good start at reaching heights of 20 feet. Is it a problem in containers in the DC area? Apply a low-nitrogen fertilizer, such as 5-10-10, in the spring. Plant sweet autumn clematis in full sun for best flowering. The photos you are seeing are ones I took last weekend when Lynn and I ducked into McKinney to grab a Fletcher’s State Fair corny dog in the much-hyped special promotion. Sweet autumn clematis is in bloom around Texas right now. Invasive, Exotic Plants of the Southeast Sweet Autumn Virginsbower. Clematis terniflora – Missouri Botanical Garden, Invasive.org – Center for Invasive Species and Ecosystem Health, Clematis terniflora – Illinois Wildflowers, Electronic Data Information Source – University of Florida IFAS Extension, Plant of the Week – University of Oklahoma Department of Botany & Microbiology, Sweet Autumn Virginsbower – National Park Service. How to report an invasive species sighting to EDDMapS – Early Detection & Distribution Mapping System, EDDMapS – Report an invasive species to EDDMapS, Cooperative Extension Offices – Find your local Cooperative Extension office on this map provided by USDA. Sweet Autumn Clematis; Sweet Autumn Virginsbower; Previously known as: Clematis cuspidatum; Clematis dioscoreifolia; Clematis maximowicziana; Clematis paniculata ; Phonetic Spelling KLEM-ah-tiss tern-ih-FLOR-uh This plant has high severity poison characteristics. Last assessed by Brenda Howard 8/21/2019; Reviewed and approved by IPAC 10/30/2019 . It is not recommended to plant sweet autumn clematis (C. terniflora), as it is a highly invasive vine. What are invasive species and why should we be concerned about them? It commonly overgrows saplings and small trees, killing some. This twining vine has leathery, shiny, dark green leaves. Leslie J. Mehrhoff, University of Connecticut. This work is supported by New Technologies for Agriculture Extension grant no. The plant is not fussy about soil conditions as long as there is good drainage. And fragrant! They include vomiting, excess salivation, diarrhea, mouth ulcers, dizziness, fainting, and convulsions. But if you're trying to get your vines to cover a large area, such as a big pergola, you can prune less severely and leave more of the plant in place. This invasive species can be identified by looking for the characteristics described in the paragraphs that follow. Q: I saw a white blooming vine that smelled divine and was blooming in October. Clematis virginiana, devil’s darning needles – Images at invasive.org, Clematis ligusticifolia, western white clematis – Images at invasive.org, Dave Powell, USDA Forest Service (retired),bugwood.org, Joy Viola, Northeastern University,bugwood.org, Sweet autumn virginsbower – Images at Invasive.org. In fact, The New Southern Living Garden Book describes it as a “tall and vigorous” plant that “self-sows readily and can become a pest.” On the plus side, the book does say … Seeds are also showy, and production is prolific. But … Before planting check to be sure that sweet autumn clematis is not invasive where you live. 5. How can I grow one?. It grows vigorously to 30 feet and reseeds freely. Ranunculales > Ranunculaceae > Clematis terniflora DC, Synonym(s): leatherleaf clematis, yam-leaved clematis, Clematis terniflora – USDA PLANTS Profile, Sweet autumn virginsbower – The reported distribution of this invasive species across the United States. I ordered a sweet autumn clematis about 15 years ago and planted it along our stockade fence -- it covered the whole fence and was absolutely gorgeous. Common Name: Sweet Autumn Virginsbower Scientific Name: Clematis terniflora Identification: Sweet Autumn Virginsbower is a perennial sprawling woody vine that may climb to 15 to 30 … Sweet Autumn Clematis, officially known as Clematis terniflora or Clematis paniculata, is a gorgeous perennial vine which produces an abundance of sweet-smelling flowers late summer into early autumn. Toxicity from ingestion is most common, though eating a fatal dose is rare due to the plant’s bitterness and ability to cause mouth irritation. As we sat fine-dining in the car, I saw them across the street. It has been reported to be invasive in Alabama, Delaware, Florida, Georgia, Illinois, Maryland, New Jersey, North Carolina, South Carolina, Tennessee and Virginia, although it is probably invasive in additional states where it occurs. Prune out and destroy affected foliage. I have read that it can be invasive but many of those reports come from warmer zones. However, there is a look-alike invasive clematis. White, fragrant, four-petaled flowers appear in the late summer through the fall. Control and management recommendations vary according to individual circumstances. If you want me to send you one I’ll be happy to dig one up for you. What is it? But if you want to share plants, the seedlings that sprout up around a mature plant can be transplanted wherever you wish. Clematis paniculata (Sweet Autumn Clematis) is listed in the Invasive Plant Atlas of the United States. It does not have particular humidity requirements. Insecticides for Clematis Insect Pest & Slug Control. See below This plant is an invasive species in North Carolina Description. Skin contact can result in redness and a burning sensation. Clematis paniculata is sometimes sold as sweet autumn clematis, but this is a less invasive vine that comes from New Zealand. Symptoms of toxicity are similar in people and animals. The deck is over an alley; there is not a lot of dirt right around it where seeds would grow if they fell. What is the best way and place to report the occurrence of an invasive species? However, sweet autumn clematis should be planted with caution, as it is a very vigorous vine that can choke out nearby plants. If you will use chemicals as part of the control process, always refer to the product label. Sweet Autumn Clematis As its name suggests, Sweet Autumn Clematis produces a cloudlike abundance of sweetly fragrant, frothy white flowers in autumn. However, it can be sparse and leggy near the base, so it is ideal to surround the lower area with other plants that hide the bottom of the sweet autumn clematis and keep its roots cool. To learn the easy way to spot it (spoiler alert—it’s the leaves! The seed heads are feathery in appearance. By using The Spruce, you accept our. John D. Byrd, Mississippi State University. Ranunculales > Ranunculaceae > Clematis terniflora DC Synonym(s): leatherleaf clematis, yam-leaved clematis Clematis terniflora– USDA PLANTS Profile Seeds are also showy, and production is prolific. Dave Powell, USDA Forest Service (retired), Additional Images for Sweet Autumn Virginsbower, Learning Resources for Sweet Autumn Virginsbower, Additional Information, Biology, Control and Management Resources, Terrestrial (land-dwelling) invasive species, Aquatic (Water-Dwelling) Invasive Species, Public Outreach and Education Materials (Invasive species), How to report an invasive species sighting to EDDMapS, United States Land-Grant University System. Table 1. It should be used with care as it is considered invasive in some locations.Also known as Clematis maximowicziana. The spent flowers are replaced by fuzzy seed heads that are also attractive. It also can cause irritation from skin contact, though not everyone experiences this. It is native to Japan and China and was introduced into the United States as an ornamental plant. It is rather rare that a gardener would need to propagate sweet autumn clematis. The pinwheel flowers are fragrant and white with 4 petal-like parts and many stamens. Sweet autumn clematis leaves and sap are toxic to both humans and animals. The leaves are opposite, compound (with three to five leaflets), and the margins are entire. Bloomed all of August and September here last year. (5 to 7.6 cm) long. Clematis terniflora (Sweet Autumn Virginsbower) - NC INVASIVE PLANT COUNCIL Sweet Autumn Virgin's Bower Sweet autumn virgin’s bower (Clematis terniflora), also known as sweet autumn clematis, is a vigorous woody vine that has fragrant flowers which bloom in the fall. United States Land-Grant University System – Find your land-grant university’s College of Agriculture, Cooperative Extension Service, or other related partner on this map provided by USDA. Sweet autumn virginsbower is an invasive climbing, semi-evergreen, ornamental vine. Sweet Autumn Clematis is easy to grow and can become invasive due to a rampant growth habit in addition to self-seeding. It is reported to be invasive in a number of eastern states. Most gardeners cut their sweet autumn clematis plants down to within a foot or so from the ground. Clematis terniflora is a perennial woody vine, native to Asia and introduced to North America as an ornamental. This will remove the seed heads and prevent them from growing unwanted plants. Regular feeding and watering will reward you with a large vine blanketed with white flowers by early fall. Native Species That Resemble Sweet Autumn Virginsbower. The ideal soil will have a slightly acidic to neutral soil pH, but even slightly alkaline soils generally support the plant quite well. Formerly categorized as Clematis paniculata, sweet autumn clematis can grow to 30 feet, though 15 feet is a more typical mature size. The flowers are small, white, numerous, and fragrant. If you determined to grow this strong-willed vine (or it's already growing in your landscape), be sure to keep an eye on it so that it doesn't get out of hand and invade other parts of your garden or natural areas. As long as the disease hasn't spread throughout the entire plant, it will usually bounce back the next growing season. It was just beautiful and smelled lovely. Introducing "One Thing": A New Video Series, The Spruce Gardening & Plant Care Review Board, The Spruce Renovations and Repair Review Board. Clematis terniflora prefers sun to partial shade and is found invading forest edges, rights of ways and urban green space especially near creeks. Simply cut a 4- to 6-inch stem segment, plant it in ordinary potting soil, and keep the soil moist until roots develop. Plus, it self-seeds readily and can easily spread beyond its garden site. Seed heads have long, silvery-gray, feather-like hairs attached. The Spruce uses cookies to provide you with a great user experience. Be sure to check locally in your area before planting to insure that sweet autumn clematis is not invasive where you live. Like all clematis, sweet autumn is a heavy feeder. It is reported as invasive in the eastern half of the U. S., in Arlington and Alexandria, and in… (Source: Invasive Plant Atlas of the United States), Up-to-the-minute distribution maps and why they are important. Learn tips for creating your most beautiful (and bountiful) garden ever. It needs a sturdy structure, as the plant can get quite massive and heavy. It prefers full sun but can tolerate partial … Although it can be used as a ground cover, sweet autumn clematis is more commonly found draped over stone walls or scaling structures such as arbors. Plus, it self-seeds readily and can easily spread beyond its garden site. It was introduced into the United States in the late 1800s as an ornamental garden plant, and has naturalized in many of the eastern states. Sweet autumn virginsbower is an invasive climbing, semi-evergreen, ornamental vine. It blankets native vegetation and eliminates the basic source that plants need to make energy—sunlight, smothering vegetation beneath it. White, fragrant, four-petaled flowers appear in the late summer through the fall. However, these vines can tolerate a considerable amount shade—unlike most other clematis species—as long as you are willing to put up with some reduced flowering. It seems to be a gorgeous addition to any garden at first. Sweet Autumn Clematis can grow quite vigorously to the point of being invasive in warmer areas of the country. Location, habitat, weather, and a variety of other conditions are factors that help determine the best treatment choice. Clematis terniflora, in addition to sweet autumn clematis, is also called Japanese clematis because it is native to Japan and China. To find the safest and most effective treatment for your situation, consult your state’s land-grant institution. This is a good time to double check populations you see to make sure it’s really the native virgin’s bower, and not the invasive sweet autumn clematis (Clematis terniflora). A: Just when you thought there wasn’t much to enjoy in your garden as summer becomes fall, along comes Sweet Autumn Clematis (Clematis virginiana). While this Asian sweet autumn clematis is listed as invasive in several parts of the country, it is not in Connecticut * I planted this in 2012 at the east side of the deck where the kiwi vine had been. Clematis terniflora prefers sun to partial shade and is found invading forest edges, rights of ways and urban green space especially near creeks. Leaflets are each 2 to 3 in. The native species (C. virginiana) is very similar (margins of leaves of the native tend to be toothed) but not as prone to self-seeding and spreading. 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