4. Marigold (Calendula Officinalis)
Commonly cultivated as ornamental plants, because of their beautiful colored flowers. The marigolds are very resistant and give off an intense odor that is very unpleasant to mosquitoes and ironically even to some gardeners. The plant contains pyrethrum, a compound widely used in anti-mosquito repellents.
The marigold plant prefers to be exposed to the full sun rays and extremely fertile soil an exposition in full sun and fairly fertile ground. If grown in pots, it can be placed in strategic areas such as the entrance of the house or window sills.
In addition to repelling mosquitoes, wasps, and hornets and containing pyrethrum, the marigolds also keep away many parasites of the tomato plants. The suggestion is to plant some of them in your vegetable garden. The use of Calendula Officinalis flowers has a calming, healing, emollient, and soothing effect. The decoction produced with about 50g of dried flowers per liter of water is used to both mouth ulcers, sores, blisters, and all skin problems.