The yellow flower in the photograph belongs to Moonshine Yarrow. The Latin genus above contains just under 100 flowering plants, many of which are used decoratively in Gardens like this one. The name comes from Greek mythology where it’s said Achilles soldiers used Yarrow to treat wounds. I find this fascinating as the blood clotting qualities of Yarrow are well documented by herbalists. Only a few months a go a herbalist in the Natural History Museum garden was telling me to put yarrow up my nose for a nose bleed. These properties give yarrow some of its other common names like blodwort and allheal. This is one property of many that Yarrow has been scientifically proven to have, it has antiseptic properties and is often used as a carminative and to treat colds and flu. Usual warning…be certain about identification to the untrained eye, there are some nasty plants this may be mistaken for especially as there are such a range of species flowering in a multitude of colours.
PS: Please would someone identify the moth for me?