Citronella (Cymbopogon nardus). Cymbopogon nardus is the only citronella variety categorized by the US FDA as safe for human consumption, including its distillates, essential oil and hydrosol. See the list here.

It is important to note that the US EPA categorizes the citronella oil as a biopesticide due to its high antifungal activity with no reports of adverse effects of concern over a 60-year period. See the documentation here. Or download the pdf.

Citronella : Antifungal

Actual product independent testing : Farm Application

According to this in vitro study of GIGC C. Nardus essential oil, "Fungal growth inhibition was significantly observed in all concentrations. However, in the absence of the essential oil, the pathogenic fungi had a normal development in 10 days of incubation. The present study revealed that essential oil of C. nardus is a promising natural means of controlling the development of the pathogenic fungi of P. indicus."

Source: In vitro Evaluation of Cymbopogon nardus Essential Oil against Leaf Disease Fungus of Narra (Pterocarpus indicus Wild), Ata JP and Manalo MMQ. International Research Journal of Biological Sciences, Vol. 3(8), 56-59, August (2014)link.

In another study, it says that " the effect of citronella (Cymbopogon nardus) essential oil was observed to inhibit mycelial growth of Fusarium oxysporum f. sp. cubense (E. F.Smith) W.C. Snyder & H.N. Hansen causing Fusarium wilt disease in abaca in vitro and its disease symptoms in vivo. Four different concentrations (0.001%, 0.025%, 0.05% and 0.1% v/v) were used for the in vitro assay within 21 days of observation. Mycelial growth was significantly inhibited in the 0.05% and 0.1% concentrations. For the in vivo assay, the 0.1% v/v concentration was used to test the efficacy of citronella essential oil in suppressing leaf symptoms of Fusarium wilt disease on Abaca seedlings using the Disease Severity Index (DSI)."

Source: Evaluation of the Curative Effect of Cymbopogon nardus (L.) Rendle Essential Oil On Fusarium Wilt of Abaca (Musa textilis Nee), Gana, Ata, and Manalo.Ecosystems & Development Journal 7(1): 14-20 April (2017) link.

Insect repellent, Natural fumigant

Talling above the lemongrass and citronella are the coconut trees, where we source our virgin coconut oil (VCO).
Because both are inherently insect repelling, none of the trees were infected with "coco-lisap" nor army worm, nor any infestation. No pesticides were ever needed.

coconut trees with no pesticides

Try our citronella insect repellent spray! Artisan product, low volume, high quality.

Safe for pregnant women and kids
No propellant
No surfuctant
No emulsifier
100% natural.


To naturally fumigate, you may burn our lemongrass or citronella essential oils.

Essential oils vs "blended" oils

Pure essential oils caramelize, like sugar

Essential Oils means they are still plant-based material and undiluted. The most accurate way to test is via gas chromatography testing and look for monoterpenes (i.e limonene, geraniol, etc.)

A practical test would be using a vaporizer. This vaporizer of ours has not been cleaned for at least 30 days and it runs on 25W. There is a flatter vaporizer made from Australia and it only runs on 4W The flatter the better, means no water is necessary. (Although, I don't put any water in this 25W.)

Pure essential oils caramelize, like sugar.

If the product is tainted with any alcohol, even the natural ethyl alcohol, the residue will turn black.

And the resulting air is carbon monoxide, the same deadly fume that comes out of automobile exhaust pipes.

Any form of oil added that is mineral-based (like baby oil) will turn the residue black.