Medicinal uses
Documented medicinal uses.
Historical medicinal uses. These records describe reported uses. They do not establish safety or effectiveness. Ask a qualified health professional before using any plant medicinally.
4,120 plants
- Orchis laxifloraMarsh Orchis
- Orchis masculaEarly Purple Orchis
- Orchis militarisMilitary Orchis
- Orchis morioGreen-Winged Orchid
- Orchis ustulataDark-Winged Orchis
- Origanum dictamnusDittany Of Crete
- Origanum majoranaSweet Marjoram
- Origanum onitesPot Marjoram
- Origanum vulgareOregano
- Origanum vulgare hirtumGreek Oregano
- Origanum x majoricumHardy Marjoram
- Orixa japonica
- Ornithogalum umbellatumStar Of Bethlehem
- Orobanche ammophylaLie Dang
- Orobanche californicaCalifornia Broomrape
- Orobanche fasciculataCancer Root
- Orobanche grayana
- Orobanche ludovicianaBroom Rape
- Orobanche pinorum
- Orobanche tuberosaGround Cone
- Orobanche uniflora
- Orostachys japonicaRock Pine
- Orthilia secundaSidebells Wintergreen
- Osbeckia chinensis
- Osmanthus fragransFragrant Olive
- Osmorhiza claytoniiWoolly Sweet-Cicely
- Osmorhiza longistylisAniseroot
- Osmorhiza occidentalisWestern Sweet-Cicely
- Osmunda cinnamomeaCinnamon Fern
- Osmunda claytonianaInterrupted Fern
- Osmunda regalisRoyal Fern
- Ostrya virginianaIronwood
- Oxalis acetosellaWood Sorrel
- Oxalis corniculataYellow Sorrel
- Oxalis exilisLeast Yellow Sorrel
- Oxalis oreganaRedwood Sorrel
- Oxalis strictaYellow Wood Sorrel
- Oxalis violaceaViolet Wood Sorrel
- Oxydendrum arboreumSorrel Tree
- Oxyria digynaMountain Sorrel
- Packera aureaGolden Groundsel
- Paederia scandens
- Paeonia anomala
- Paeonia browniiBrown's Peony
- Paeonia caucasica
- Paeonia delavayiTree Peony
- Paeonia emodi
- Paeonia hybrida
- Paeonia japonicaYama-Shakuyaku
- Paeonia lactifloraChinese Peony
- Paeonia luteaTree Peony
- Paeonia mascula
- Paeonia obovata
- Paeonia officinalisPeony
- Paeonia ostiiTree Peony
- Paeonia potaniniiTree Peony
- Paeonia suffruticosaMoutan
- Paeonia szechuanicaTree Peony
- Paeonia veitchii
- Paliuris ramosissimus
- Paliuris spina-christiChrist's Thorn
- Panax ginsengGinseng
- Panax japonicusJapanese Ginseng
- Panax pseudoginseng
- Panax pseudoginseng notoginsengSan Qi
- Panax quinquefoliusAmerican Ginseng
- Panax trifoliusGround Nut
- Panicum antidotaleBlue Panic Grass
- Panicum capillareOld Witch Grass
- Panicum milliaceumEuropean Millet
- Papaver argemonePrickly Poppy
- Papaver dubiumLong-Head Poppy
- Papaver nudicauleArctic Poppy
- Papaver orientaleOriental Poppy
- Papaver rhoeasCorn Poppy
- Papaver somniferumOpium Poppy
- Parietaria judaicaPellitory Of The Wall
- Parietaria officinalisPellitory Of The Wall
- Paris polyphyllaHerb Paris
- Paris quadrifoliaHerb Paris
- Parnassia cabulica
- Parnassia palustrisGrass Of Parnassus
- Paronychia argenteaAlgerian Tea
- Paronychia capitataAlgerian Tea
- Parryella filifoliaCommon Dunebroom
- Parthenium integrifoliumWild Quinine
- Parthenocissus quinquefoliaVirginia Creeper
- Passiflora edulisPassion Flower
- Passiflora incarnataMaypops
- Pastinaca sativaParsnip
- Patrinia scabiosifolia
- Patrinia villosa
- Paulownia tomentosaFoxglove Tree
- Pectis angustifoliaNarrowleaf Pectis
- Pectis papposaChinchweed
- Pedicularis bicornuta
- Pedicularis canadensisCommon Lousewort
- Pedicularis longiflora tubiformis
- Pedicularis oliveriana
- Pedicularis pyramidata