Dame’s Rocket has no natural predators in North America and is therefore able to outcompete many native plants. Apfelbaum, S. 2012. Identification difficulty. They will grow in almost any soil, as long as it its kept moist. Avoid getting the Dame's rocket was brought to North America in the 17th century and has since become naturalized there, now growing throughout most of the US and Canada. Their popularity is for the wildflowers which put on a great show in the springtime. Tends to form thick monocultures and can starve an area for resources, reducing local biodiversity. The flowers are large, white or purple, 15 to 20 mm, in broad panicles and they are fragrant. Manual of Montana Vascular Plants. Habitats invaded by this plant include open woodlands, prairies, roadsides, ditches, and other disturbed areas where native plants are crowded out. A plant being nonnative is not enough reason to label it as necessary to remove. It can form massive colonies, typically setting foot in disturbed soils. The white or purple flowers bloom from mid-spring through summer at the tips of stalks. The English plant collector Peter Collinson sent seeds of Dame's Rocket to John Custis of Williamsburg in 1735. Dame’s Rocket is often mistaken for Phlox, Phlox paniculata, Phlox stolonifera and others. PLEASE NOTE: A coloured Province or State means this species occurs somewhere in that Province/State. The dame’s rocket (Hesperis matronalis) is responsible for these splashes of color. Dame’s Rocket is a fairly common sight along roadsides in St. Lawrence County, NY. It may be included in native wildflower mix packets. Finally, glyphosate-containing herbicides can be applied in late fall when native plants are dormant, but the dame’s rocket basal rosettes are still green and vulnleaf erable to sprays. Dame’s rocket sometimes finds its way into garden beds because of its strong resemblance to garden phlox. It is a low rosette the first year and stays green all winter. The genus Hesperis consists of about sixty biennial or perennial herbs native to the Mediterranean region and central Asia, of which dame’s rocket is the only species that is cultivated extensively. Dames rocket is a flowering biennial that was introduced in North America in the 1600s. The rocket is an invasive plant in some regions. Pollinator BRIT Press. This variety of dame’s rocket plant is native to Southern Europe, Asia, and Russia. Dame’s Rocket (Hesperis matronalis), originally from Eurasia, certainly fills that bill. For easy identification of Dame’s Rocket, look to the bright pick/purple flowers blooming from May to August. It is native to Eurasia and has an appealing fragrance that is more pungent in the evening than during the day. This species was introduced from Europe as an ornamental plant and it has been grown in gardens since the Roman Empire. It has similar growth patterns and can take over habitat of native wildflowers and tree seedlings. Dame’s rocket is a biennial (2-year life cycle), a similar growing cycle to garlic mustard. Dames rocket has alternate, lance-shaped leaves with serrate margins. Dame’s rocket eliminates native vegetation with its profuse plant density. The Dames Rocket flower resembles phlox, but it belongs to the mustard family. How to Grow Dame's Rocket Plants: Dame's Rocket plants are very easy to grow. Dame’s rocket is a native of Eurasia that has been cultivated throughout the world due to its attractive flowers. Indigo bush (Amorpha fruticosa) is a rare native species in the Midwest, but became an aggressive invasive along the Columbia River in Oregon when it was introduced there, outside of its native range. Range map for dame 's Rocket ( Hesperis matronalis ) is responsible for these splashes of.. Sharply toothed, and very invasive in North America in the evening than during the day biennial. 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