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Plants with crop protection properties
Plants with crop protection properties
Very many wild and domesticated plants have plant protection properties in some measure. Some of them are part of the rich indigenous knowledge in some parts of Africa, but others are less commonly known. The following table gives an overview of the documented species from two sources (see below) and their properties for plant protection.
When making plant teas from these plants, please note that some have stronger effects than others and that botanicals are often difficult to dose exactly right, so you may not be getting the full benefit from any one plant tea preparation.
For more reliable plant protection please see our new list of registered biopesticides, some of which are much more effective than conventional spray chemicals. Also they are easy to dose correctly.


Plant Name Insecticidal Insect repellant Nematicidal Fungicidal Anti bacterial Anti Viral
African Marigold x x x x x
Aloe x x
Bersama Abyssinica x
Blackjack x x
Cassava x
Castor oil x x x x
Catunaregam Spinosa x x
Chili x x
Chineese Lantern x x
Cork Bush (Mundulea sericea) - Rotenone Xxx Use Prohibited by some org certifiers
Croton X also kills snails and fish
Custard apple X incl grasshopper
Datura x x x x
Eucalyptus x
Fat Hen (Chenopodium album) x
Feverfew (contains pyrethrin) x x
Finger millet x x
Garlic x x x x x
Goat weed (Ageratum conyzoides) x x x x
Jatropha X (incl mollusks) x x
Lantana x x
Leadwood x
Lion?s Ear (Leonotis nepetifolia) x
Lippia x x
Marigold, Mexican x x x x
Monkey orange x
Moringa olifera x x
Oleander Whole plant is poisonous X (also rodents ) x x
Onion x x midly
Papaya x x x
Plectranthus barbatus x
Pyrethrum x x
Rain tree (Rotenone) X prohibited
Red Mahogany X also rats
Red sunflower (tithonia rotundifolia) x
Resurrection bush x
Rhubarb x x
Rubber hedge (Finger Euphorbia) x x x
Snow berry x x
Soyabean stems x
Stab grass, Andropogon spp x
Sugar apple Annona sp. x
Sunnhemp (Crotolaria) x x
Sweet basil x x midly
Sweet potato aphids x
Syringa (Melia Azedarach) x x x x
Tea x
Tephrosia (rotenone) Xxx (prohibited by some organic certifiers x
Tobacco x x x x
Tomato x
Wild basil x x midly
Quassia amara x x x
There are other plants with medicinal and plant protection properties not listed and probably many not yet discovered.
Information Source Links
  • Elwell. H. and Anita Maas1995: Natural Pest & Disease Control. Mambo Press, Gweru, Zimbabwe. ISBN: 0-7974-1429-0
  • Stoll, G 1986: Natural Crop Protection in the Tropics. AGRECOL Margraf Publishers, Switzerland. ISBN: 3-8236-1113-5
organic
Refers to the farming system and products described in the IFOAM standard and not to 'organic chemistry'.
Conventional
Refers to any material, production or processing practices that is not certified organic or organic in-conversion.
Biopesticides
Biopesticides include microbiological pesticides (based on fungi, bacteria and virus) but also botanicals (plant extracts), since they are extracted from or are products of living organisms (plants)