seed production because individual insects remove little tissue and plants often have strong ability to regrow lost tissue. This map shows the native and introduced (adventive) range of this species. It is a active self-seeder though, so the cycle will continue as long as it sets seed. Some ephemeral species are also available for summer shipping. The central stem and side stems are light green to reddish brown, … thistle (Cirsium altissimum), in two different ecosystem productivity zones in the tallgrass prairie region of eastern Nebraska USA. Detailed analysis of the seed addition experiment results showed (Russell et al. Cirsium altissimum, Tall Thistle. Common name is tall thistle or roadside thistle. 1826. Eltham. purple prairie clover. UPS and Spee Dee are often used for expediting plant orders; they will not deliver to Post Office Box numbers, so please also include your street address if ordering plants. Cirsium altissimum (Tall Thistle) is somewhat variable in the way they grow and what they look like from one location to another. (2012) Cirsium altissimum.In: Azimova S.S., Glushenkova A.I. Pasture Thistle can be identified by examining the underside of the leaves; the downy white underside contrasts with the green topside. The plant growing in full sun is shorter, has no lobed lower leaves, and the inflorence is more open. During the 2nd year and thereafter, it develops stems with alternate leaves and becomes about 3-8' tall. It was first named and described as Carduus altissimus by Carl von Linnaeus in the second edition of Species Plantarum in 1753. Cirsium altissimum, Tall thistle. Biennial with taproot, reproduction by seed. W. L. Bloom (1977) reported that the chromosomes of the two species differ by several rearareaments. Then, follow the GERMINATION INSTRUCTIONS prior to planting. However, it is not a legal authority for statutory or regulatory purposes. Cirsium. Since our plants are field-grown, Nature sets the schedule each year as to when our season will begin and end. If you're interested in any of the seed listed above, please contact us (alsonkrohn@gmail.com)! Perennials. Category: Biennials. It bears bright purple pom-pom flowers on woolly stems with leaves that are soft and white-felted. Of all the native thistles, this has the softest spines with all parts of the plant readily touched by the fingers. 1732). FOR MORE DETAILED SHIPPING INFORMATION, INCLUDING CANADA SHIPPING RATES (SEED ONLY), PLEASE SEE 'SHIPPING' AT THE FOOTER OF THIS WEBSITE. TOOLS and BOOKS have the shipping fee included in the cost of the product (within the contiguous US). Fruits: dry seed on fluffy, feathery-divided pappus. The attributes of the genus Cirsium (plume thistles) are available at these links: FNA, USDA, Wikipedia.Distribution information is available from BONAP and The Vascular Plants of Iowa. Natural hybrids between Cirsium altissimum and C. discolor are well documented (R. A. Davidson 1963; G. B. Ownbey and Hsi Y.-T. 1963; Ownbey 1964; S. Dabydeen 1997). biltmoreanum Petr. **We are required to collect state sales tax in certain states. NameThatPlant.net currently features 3816 plants and 23,855 images. A. Online Catalog? 1 & 2. Plants of Cirsium altissimum ranging from southern Minnesota to Texas often have more deeply divided leaves than do populations in other portions of the species’ range. We are primarily a wholesale seed farm. Shipping & handling charges are also subject to the sales tax. May 16, 2016 - 40 Seeds per packet. We dig plants when they are dormant from our outdoor beds and ship them April-May and October. If winter-spring greenhouse growing conditions are favorable and all species are well-rooted at once, then we ship by order date (first come, first serve). Cirsium heterophyllum. Print Catalog? Trees. Plant seed or plants in the fall to take full advantage of this biennial cycle. These flowers attract a wide variety of pollinators, including bumblebees, long-horned bees, swallowtail butterflies, many beetles and caterpillars. A root photo is included with each species to illustrate the optimal depth and orientation. Leaves: large, with spiny teeth or shallow lobes but not divided, underside with dense, whitish fuzz. Average Water Needs; … A form of this plant but with more deeply divided leaves is sometimes called C. iowenses. BARE ROOT PLANTS are shipped during optimal transplanting time: Spring (April-May) and Fall (Oct). ... To quantify the effect of apical meristem mining on seed production by C. altissimum , we randomly chose 120 (of 180) experimental plants. Bull thistle - Cirsium vulgare or Canada thistle - Cirsium arvense). Discussion. We send tracking numbers to your email address so please include it when you order. 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