Once a week, on a Tuesday, the walled garden at Knole is open to the public. Among its extensive grounds, there is a small herb garden with lots of medicinal herbs growing, including the impressive Garden Angelica. Angelica (Angelica archangelica) is probably best known as those super green, super sweet crystallised sticks used in cooking but medicinally, it is a particularly useful aromatic bitter to help soothe digestive upsets – the monks of Chartreuse even have it as an ingredient of their digestif – but it can also help with coughs and cold and fevers.
P.S. Garden Angelica does have a sister in her Apiaceae/Umbelliferae family – the Chinese angelica (Angelica sinensis) but she has quite a different character!