Also known as the English Marigold, calendula is a tough little soul. Grown as a hardy annual, they produce stunning orange flowers, both in single and double forms, throughout the summer. Easily sown in open ground, it's great for filling gaps in your borders or raised beds and is sometimes used as a companion plant, grown alongside tomatoes and beans to deflect aphids. A notable party trick of the calendula lies with its edible flowers, which can be garnished on salads or used to decorate drinks! It has been noted as a medicinal plant throughout history, used to treat irritated skin and, in some cases, even skin wounds and infections.