Ordered by quantity

SpeciesPartQuantityReference
Taraxacum officinale WEBER EX F. H. WiGG. -- Dandelion Leaf 5,000 ppm DUKE1992A
Echinacea spp -- Coneflower, Echinacea Root 4,800 ppm DUKE1992A
Symphoricarpos orbiculatus MOENCH. -- Buckbush Stem 4,400 ppm DUKE1992A
Artemisia vulgaris L. -- Mugwort Plant 3,900 ppm DUKE1992A
Boehmeria nivea (L.) GAUDICH. -- Ramie Plant 3,500 ppm DUKE1992A
Physalis ixocarpa BROT. -- Tomatillo Fruit 2,974 ppm DUKE1992A
Harpagophytum procumbens (BURCH.) DC. EX MEISN. -- Devil's Claw, Grapple Plant Root 2,900 ppm DUKE1992A
Asiasarum heterotropoides MAEK. -- Asian Wild Ginger Root 2,800 ppm DUKE1992A
Asiasarum sieboldii (MIQ.) MAEK. -- Siebold's Wild Ginger Root 2,800 ppm DUKE1992A
Stellaria media (L.) VILLARS -- Chickweed, Common Chickweed Plant 2,530 ppm DUKE1992A
Verbascum thapsus L. -- Flannelleaf, Flannelplant, Great Mullein, Mullein, Velvetplant Leaf 2,360 ppm DUKE1992A
Mentha pulegium L. -- European Pennyroyal Plant 2,310 ppm PED
Carthamus tinctorius L. -- Safflower Flower 2,200 ppm DUKE1992A
Petasites japonicus (SIEBOLD & ZUCC.) MAXIM. -- Butterbur Plant 2,100 ppm DUKE1992A
Valerianella locusta (L.) LATERRADE -- Corn Salad, Lamb's Lettuce Plant 3,519-4,143 ppm USDA(GRAND FORKS)-UNPUBLISHED
Polystichum polyblepharum (ROEM.) PRESL -- Chinese Polystichum Plant 1,900 ppm DUKE1992A
Trifolium pratense L. -- Cowgrass, Peavine Clover, Purple Clover, Red Clover Shoot 1,850 ppm DUKE1992A
Nyssa sylvatica MARSHALL -- Black Gum, Black Tupelo Leaf 1,820 ppm DUKE1992A
Angelica dahurica BENTH & HOOK. -- Bai Zhi Root 1,800 ppm DUKE1992A
Schizonepeta tenuifolia BRIQ. -- Ching-Chieh, Jing-Jie Plant 1,700 ppm DUKE1992A
Caulophyllum thalictroides (L.) MICHX. -- Blue Cohosh Root 1,640 ppm DUKE1992A
Ruscus aculeatus L. -- Box-Holly, Butcher's Broom Root 1,640 ppm DUKE1992A
Diospyros virginiana L. -- American Persimmon Stem 1,620 ppm DUKE1992A
Amaranthus sp. -- Pigweed Leaf 1,527 ppm DUKE1992A
Thymus vulgaris L. -- Common Thyme, Garden Thyme, Thyme Plant 1,508 ppm USA
Camellia sinensis (L.) KUNTZE -- Tea Leaf 1,500 ppm DUKE1992A
Manihot esculenta CRANTZ -- Cassava, Tapioca, Yuca Leaf 1,500 ppm DUKE1992A
Arctium lappa L. -- Burdock, Gobo, Great Burdock Root 1,470 ppm DUKE1992A
Prunus serotina subsp. serotina -- Black Cherry, Wild Cherry Leaf 1,440 ppm DUKE1992A
Berberis vulgaris L. -- Barberry Root 1,410 ppm DUKE1992A
Anemarrhena asphodeloides BUNGE -- Chih-Mu, Zhi-Mu Rhizome 1,400 ppm DUKE1992A
Peucedanum decursivum (MIQ.) MAX. -- Qian Hu Plant 1,400 ppm DUKE1992A
Nepeta cataria L. -- Catnip Plant 1,380 ppm PED
Cynanchum atratum BUNGE -- Bai-Wei, Pai-Wei Root 1,350 ppm DUKE1992A
Juniperus virginiana L. -- Red Cedar Shoot 1,320 ppm DUKE1992A
Fallopia japonica SIEBOLD & ZUCC. -- Giant Knotweed, Hu-Zhang, Japanese Knotweed, Mexican Bamboo Plant 1,300 ppm DUKE1992A
Senna occidentalis (L.) H. IRWIN & BARNEBY -- Coffee Senna Seed 1,300 ppm DUKE1992A
Equisetum arvense L. -- Field Horsetail, Horsetail Plant 1,230 ppm DUKE1992A
Nardostachys chinensis BATALIN -- Chinese Spikenard Rhizome 1,210 ppm DUKE1992A
Bupleurum chinense DC. -- Chai-Hu Root 1,200 ppm DUKE1992A
Luffa aegyptiaca MILLER -- Luffa, Smooth Loofah, Vegetable Sponge Leaf 1,162 ppm DUKE1992A