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Plants of the Eloise Butler Wildflower Garden

Common
Name

Scientific
Name

Plant
Family

Garden
Location

Prime
Season

Dame's Rocket
Hesperis matronalis L.
Mustard (Brassicaceae)
Woodland and Upland
Spring to Early Summer
Other names and notes
(Rocket, Sweet Rocket; Dame's violet). An erect 2 - 3 foot tall biennial, found primarily in the Woodland Garden with some encroaching on the Upland Garden. The fragrant flowers (mostly noticeable in the evening) vary from white to pink and occur in a loose cluster at the top of the stem and in smaller clusters from the upper leaf axils. Flowers are 4-part, tubular with the petals spreading to about one inch wide. The tube of the flower is about one inch long and with fine hair. Leaves are toothed and alternate, the upper leaves touch but do not clasp the stem. Lower leaves may have a very short stalk. Stem and leaves have fine soft hair. The plant is an escapee from gardens and is quite a spreader, becoming invasive in the Garden as it has spread throughout the bog area and is making it's way up the back trail to the Upland Garden. It is a prohibited plant in several states. Like most plants that become invasive, it grows fast and blooms and seeds early before the less vigorous native plants can take hold. Dame's Rocket can have a prolonged bloom period, and like most Mustard Family flowers, they open from the bottom of the spike upward, while the long, thin seed pods form from the decaying lower flowers. The "Rocket" part of the name, according to Mrs. Grieve, (Ref. 7) comes from the language of flowers and "has been taken to represent deceit since the plant gives off a lovely perfume in the evening, but in the daytime has none." The genus name, Hesperis, is Greek for "evening" or "Vesper-flower", as that is when the fragrance is greatest, and matronalis is Latin and indicates the flower was a favorite of women- hence altogether - Dame's Rocket.
Dames Rocket Flower
Dames Rocket
The flowers can vary in color depending on the soil and amount of sun received. Some can also be white as shown below.
Dames Rocket white flower
Below: The upper leaves touch but do not clasp the stem
Below: White and pink flowers often intermingle
Dames Rocket leaf
Dames Rocket pink and white flowers
Below: An extensive growth of Dame's Rocket in the bog area of the Woodland Garden.
 
Dame's Rocker
 

Notes: Dame's Rocket is not indigenous to the Garden area. It arrived sometime later as it was listed on Martha Crone's 1951 inventory of plants in the Garden at that time. It has naturalized in North American throughout most of Canada and all of the United States except the states of the Gulf Coast and Arizona. In Minnesota, escaped populations will be found in those counties that have cities of size, particularly the metro area counties. In an early spring like 2010, first flowers can appear before May 1st and flowering can continue well into the summer.

Lore and Use: This flower was especially popular in Europe, having originated in Italy, and thus was brought over to America. It was a favorite of Marie Antoinette. There is some early medicinal lore of using the plant as a diuretic and an expectorant and for inducing sweating. Gerard and Culpepper are said to have mentioned it.

 
 

 
References: Plant characteristics are generally from sources 15, 16, 30, 31, 33, W2 & W3. Distribution principally from W2 and also 31, 34 and W1. Planting history generally from 1, 4 & 4a. Other sources by specific reference. See Reference List for details.  
©2008-2012 Friends of the Wild Flower Garden, Inc. All photos are the property of The Friends of the Wild Flower Garden unless otherwise credited. "www.friendsofthewildflowergarden.org" 111912