yellow sweetclover

Fabales > Fabaceae > Melilotus officinalis (L.) Lam.
Synonym(s): yellow sweet-clover
Yellow sweetclover is an annual to short-lived perennial herb native to Eurasia. Plants can grow to approximately 6 ½ ft. (2 m) in height and can sometimes be woody at the base. Leaves are ovate to oblong, entire, stipulate and 0.4-1 in. (1-2.5 cm) long. Flowering occurs from April to September, when yellow, pea-like flowers develop in a branched inflorescence at the tips of the flowering stems. Flowers are less than ¼ in. (7 mm) long. Fruits are small, circular, wrinkled and light brown pods that contain one seed (rarely 2). Plants occur along roadsides, in open fields, pastures and other disturbed areas. Yellow sweet clover was introduced into North America as a forage crop in the 1900s.

Identification, Biology, Control and Management Resources

  • Weed of the Week - USDA Forest Service
    http://www.na.fs.fed.us/fhp/invasive_plants/weeds/yellow_sweetclover.pdf - Nov 7, 2006

Selected Images

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Number:5239078
Description: Foliage;
Photographer:Richard Old, XID Services, Inc.
 Additional Resolutions and Image Usage
 
Number:1364315
Description: Fruit(s);
Photographer:Mary Ellen (Mel) Harte,
 Additional Resolutions and Image Usage
 
Number:1331022
Description: Plant(s);

 in flower

Photographer:Wendy VanDyk Evans,
 Additional Resolutions and Image Usage
 
Number:1459691
Description: Flower(s);
Photographer:Steve Dewey, Utah State University
 Additional Resolutions and Image Usage
 
Number:1209020
Description: Plant(s); side view of whole plant in typical habitat
Photographer:Dave Powell, USDA Forest Service
 Additional Resolutions and Image Usage
 
Number:1559353
Description: Foliage;
Photographer:Ohio State Weed Lab Archive, The Ohio State University
 Additional Resolutions and Image Usage
 
Number:1559352
Description: Infestation;

in flower

Photographer:Ohio State Weed Lab Archive, The Ohio State University
 Additional Resolutions and Image Usage
 
Number:1364313
Description: Plant(s);
Photographer:Mary Ellen (Mel) Harte,
 Additional Resolutions and Image Usage
 
Number:1459693
Description: Plant(s);

in flower

Photographer:Steve Dewey, Utah State University
 Additional Resolutions and Image Usage
 
Number:5308009
Description: Seed(s);
Photographer:Steve Hurst, USDA NRCS PLANTS Database
 Additional Resolutions and Image Usage
 
Number:1459692
Description: Infestation;
Photographer:Steve Dewey, Utah State University
 Additional Resolutions and Image Usage
 
Number:1459694
Description: Infestation;
Photographer:Steve Dewey, Utah State University
 Additional Resolutions and Image Usage
 

External Links

Invasive Reference(s)

Subject Reference(s)

  • USDA, NRCS. 2001. The PLANTS Database, Version 3.1, National Plant Data Center, Baton Rouge, LA 70874-4490 USA. - http://plants.usda.gov/