this post was submitted on 21 Feb 2026
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Gotta geek out a tiny bit.
Assuming my uncited research from a decade+ ago is correct ...
Citronella was actually extracted from the "Lemon Eucalyptus / Lemon-scented Gum" tree, formerly known as Eucalyptus citriodora but more accurately known as Corymbia citriodora.
The "Citronella Scented Geraniums" never worked much at all to repel mosquitoes. It was essentially the placebo effect. I've done really lame and totally non-scientific experiments myself. The geraniums simply do not work to any significant benefit. People will literally argue with you day and night about this, but it's just not true.
That being said, grow scented geraniums to your heart's content. Burn citronella candles as if your life depended on it. They smell really good and olfactory cues like this will burn memories into your brain that you'll treasure when you're older and fading.