Green gardening is the use of natural materials to fertilize, prevent pests and other reasons. The idea of “being green” revolves around the use of natural, earth-friendly materials that also are seen as better for humans.
The listings of research below represents a compilation of scientific articles found on the topic, with a very brief overview description of each article/study. This compilation of research articles does not necessarily imply that there are adequate results to demonstrate safe and/or effective human use of any herb listed.
Essential oils for pest control was reviewed. From: Regnault-Roger, C. (1997). The potential of botanical essential oils for insect pest control. Integrated Pest Management Reviews, 2(1), 25-34.
Rosemary and its constituents showed strong activity against weed germination. Savory also had an effect. From: Angelini, L. G., Carpanese, G., Cioni, P. L., Morelli, I., Macchia, M., & Flamini, G. (2003). Essential oils from Mediterranean Lamiaceae as weed germination inhibitors. Journal of Agricultural and Food Chemistry, 51(21), 6158-6164.
A variety of commercially sold essential oil garden pest sprays showed varying effect against arthropod pests tested. From: Cloyd, R. A., Galle, C. L., Keith, S. R., Kalscheur, N. A., & Kemp, K. E. (2009). Effect of commercially available plant-derived essential oil products on arthropod pests. Journal of economic entomology, 102(4), 1567-1579.
Rosemary was effective against the spotted spider mite on plants. From: Miresmailli, S., Bradbury, R., & Isman, M. B. (2006). Comparative toxicity of Rosmarinus officinalis L. essential oil and blends of its major constituents against Tetranychus urticae Koch (Acari: Tetranychidae) on two different host plants. Pest management science, 62(4), 366-371.
Thyme, savory and spearmint were active against the mite: Varroa, without being toxic tohoneybee colonies. From: Ariana, A., Ebadi, R., & Tahmasebi, G. (2002). Laboratory evaluation of some plant essences to control Varroa destructor (Acari: Varroidae). Experimental and Applied Acarology, 27(4), 319-327.
Of 53 tested plant oils, bay, caraway seed, clove leaf, lemon eucalyptus, lime, pennyroyal, peppermint, rosewood, spearmint, and tea tree oils were highly effective against the greenhouse whitefly. From: Choi, W. I., Lee, E. H., Choi, B. R., Park, H. M., & Ahn, Y. J. (2003). Toxicity of plant essential oils to Trialeurodes vaporariorum (Homoptera: Aleyrodidae). Journal of Economic Entomology, 96(5), 1479-1484.
Lavender, lavendin and laurel essential oils showed activity against mites that kill honey bees without killing the honey bees. From: Damiani, N., Gende, L. B., Bailac, P., Marcangeli, J. A., & Eguaras, M. J. (2009). Acaricidal and insecticidal activity of essential oils on Varroa destructor (Acari: Varroidae) and Apis mellifera (Hymenoptera: Apidae). Parasitology research, 106(1), 145-152.
Diterpene acids from Grindelia humilis detered aphids. From: Rose, A. F., Jones, K. C., Haddon, W. F., & Dreyer, D. L. (1981). Grindelane diterpenoid acids from Grindelia humilis: Feeding deterrency of diterpene acids towards aphids. Phytochemistry, 20(9), 2249-2253.