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Plants of the Eloise Butler Wildflower Garden

Common
Name

Scientific
Name

Plant
Family

Garden
Location

Prime
Season

Red Clover
Trifolium pratense L.
Pea (Fabaceae)
Upland
Late Spring to Late Summer
Other names and notes

A common plant of fields and roadsides. Leaves: Red Clover has a magenta stalk-less flower head with alternate divided 3-part leaflets that, on the long-stalked larger lower leaves, have a blunt oval shape; a more lance-like shape on the upper leaves, which are stalkless or with short stalks; all leaves with hairy edges, without teeth. On each leaflet you will see a chevron like design that is a paler shade of green, sometimes even white. The smallest leaves are usually directly under the round flower head, where you will also find several green bracts. Leaves have very conspicuous stipules often with contrasting purple veining. Stem: Plant height is usually around one foot but some varieties can reach to 30". Unlike the White Clover, it is usually an erect plant with a hairy stem, sometimes branching. Flowers: The flower head is a cluster of 27 to 30 stemless tube shaped, 5-petaled flowers that open outward in all directions. The flower upper petal is the longest and shows best the delicate veining in a deeper color. Occasionally you may find a white flower. The inflorescence can arise from the leaf axils and on the stem tip.

It grows from a taproot as a biennial or a short-lived perennial. It was introduced to the United States for livestock food and it's primary use is for hay and silage. As a cover crop it is used for soil improvement as it is a member of the pea family of nitrogen fixing legumes. It is self-sterile and requires pollination by insects, mainly bumblebees as the nectaries are at the bottom of the flower tube. However, it is a source of nectar and pollen for many bees and butterflies. For comparison purposes, the White Clover, T. repens, is smaller and less erect, whereas the Yellow and White Sweet Clover, Melilotus officinalis, are tall and branching.

Red Clover
Red Clover lower leaf
Above and below: Flower head contains 27 to 30 tube flowers of 5 parts, with the upper petal having delicate dark veining. Above: The more bluntly rounded lower leaf of Red Clover. Note the hair and the lighter color of the chevron in the leaflets. Below: It is an erect plant with the lower leaves on stalks.
Red Clover flower closeup Red Clover plant
 
Below: The development of the inflorescence at the growing tip prevents further leaf production so at this stage it is best harvested for hay. Below right: The leaf stipules are very conspicuous and usually have this purple veining shown here.
Red Clover Red Clover Leaf stipule
 

Notes: Eloise Butler had catalogued this plant in her plant index as present in the Garden area on May 25, 1907. It is not a native plant but has become naturalized in most of the counties of the State and appears almost anywhere in North America. It is invasive and spreading must be controlled outside of agriculture, for which purpose, a large number of cultivars of the plant have been developed over the years.

Edible, medicinal lore: The entire plant is edible. Dried flowers are said to make a nice tea. The plant was used by Chinese and western herbalists to thin the blood. Active constituents of the plant are coumarin compounds which are known to thin the blood. (Ref.#39).

 
 

 
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.  
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