How do Citronella plants work?

Chef's answer
Despite the claims made on "Mosquito Plants" (lemon-scented geranium or "citronella plant") sold at big box stores, the plants themselves don't repel mosquitoes. It's the oil inside the leaves that have properties that can repel mosquitoes. ... Planting them in your landscape will do little to repel mosquitoes.
Frequently asked Questions 🎓
Given that plants do not have pain receptors, nerves, or a brain, they do not feel pain as we members of the animal kingdom understand it. Uprooting a carrot or trimming a hedge is not a form of botanical torture, and you can bite into that apple without worry.
Southern cattail (Typha domingensis), with their tall, stiff, grass-like leaves and hotdog-on-a-stick flowers, are familiar plants of freshwater marshes.
NeritesNerites (Neritina spp.) are fantastic algae eaters that also eat leftover fish food, dead plant matter and other "stuff" that ends up on the bottom. They come in different colors and patterns, including one with horns! They are among the most beautiful of all aquarium snails.
When tiny hairs of tomato roots are exposed to bright light, heat and scratches, they can get damaged. The plants are likely to suffer from transplant shock. These tiny hairs of the roots usually function as the moisture and nutrients absorb from the root ball.May 31, 2020
For some people, touching the leaves, stems, or veggies of certain plants can result in a red, dotty, itchy rash known as contact dermatitis. It can happen with zucchini, cucumber, pumpkins, or other plants that have prickly hairs on their vines. ... Let your skin air-dry, and the rash should go away after an hour or so.Jul 20, 2010
Given that plants do not have pain receptors, nerves, or a brain, they do not feel pain as we members of the animal kingdom understand it. ... While these plants visibly display a clear sensory capacity, recent research has shown that other plants are able to perceive and respond to mechanical stimuli at a cellular level.
Certain plants can be used to control and repel insects. Planting a diverse garden helps balance the pests. Lavender, lemongrass, and peppermint plants make a great addition to an outdoor garden. ... The essence of the plant remains in the resulting essential oil.May 15, 2020
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