New York City EcoFlora

Must Find Mustard

The Mustard family (Brassicaceae) is a large, diverse, and economically important group. They are identifiable based on their small flowers, usually with four yellow or white petals; their distinctive, elongated fruit structure called a silique; and leaves that give off a pungent smell when crushed. Over 50 species of Mustards have been found growing wild in New York City. The most abundant species in NYC are the invasive Garlic Mustard (Alliaria petiolata) and the non-native Shepherd's Purse (Capsella bursa-pastoris), but there are also a number of common native species such as Virginia Pepperweed (Lepidium virginicum), Cut-leaved Toothwort (Cardamine concatenata), and Bog Yellowcress (Rorippa palustris). How many Mustards can you find this May?

Guide to Mustards of NYC