Marigolds have a bit of a reputation in the gardening world. They’re known for repelling all manner of pests and diseases, whether they’ve technically earned these accolades or not.
It’s extremely common to see their cheery heads nodding in the summer sunshine next to tomatoes, squash, and broccoli.
But as with many garden practices, is there any science behind those things that we’ve been doing for years – or sometimes centuries?
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When it comes to using these flowers as a form of pest repellent, there’s a good reason to be planting those golden beauties next to your edible plants, and scientific research has confirmed it.
Marigolds can help you to control certain pests that may wreak havoc on your veggies.
Here’s what we’ll talk about in this coming guide:
Keep in mind that it might not be as simple as grabbing a flat of French marigolds and plopping them next to your nearly-mature potatoes.
Using natural methods of pest control can take a little advance planning, so let’s jump right in.
Whiteflies
A 2019 study published in Plos One proves that glasshouse whiteflies (Trialeurodes vaporariorum) are repelled by French marigolds, Tagetes patula.
Niall Conboy at Newcastle University’s School of Biology and Dr. Thomas McDaniel at Newcastle University’s School of Natural and Environmental Science looked at whether the humble flower could chase off the nasty whitefly.
It turns out that the limonene in marigolds deters this annoying and destructive pest.
However, that doesn’t mean that if you have a whitefly infestation you can just run out and grab a four-pack of flowers. Nope.
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