The late Valerie Finnis was a knowledgeable (and eccentric) plantswoman who was generous in giving away plants. When a keen-eyed nurseryman spotted this growing in her Northamptonshire garden she insisted he took a piece.  He named it for her and now, thanks to micropropagation, it is widely available. It is the most beautiful muscari, with celadon buds that open to delicate baby-blue flowers, when the whole plant looks like a piece of Chinese porcelain. Because the flowers are sterile the plant can only spread by bulb offsets, so you won’t be overrun with it, as you can be with other, less well-behaved, species of Muscari.  It is best in a well-drained soil and prefers a sunny spot but will grow in shady places.