evening stock References evening stock plant Ask Anything Homework Help Also known as: Matthiola longipetala, night-scented stock Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: stockEvening, or night-scented, stock (M. longipetala) is a low and much-branched annual from southeastern Europe. It produces pink to purple intensely fragrant flowers that open only at night. Read MoreEvening, or night-scented, stock (M. longipetala) is a low and much-branched annual from southeastern Europe. It produces pink to purple intensely fragrant flowers that open only at night. Read More