Alexanders is also known as horse parsley. And indeed, horses appreciate it very much and it tastes a lot like parsley. Actually, its flavor is somewhere between parsley and celery. People also eat this plant. Alexanders can grow reasonly tall. It is a plant to be harvested in the winter or early spring, before it starts to flower. Some Texelaars still use it to make tasty mashed potato casseroles. The Dutch call it 'black mush chervil'; when you boil it, it turns black!