Must Find Mustard - May 2025
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 which 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 noteworthy native species such as Virginia Pepperweed (Lepidium virginicum), Cut-leaved Toothwort (Cardamine concatenata), and American Sea-rocket (Cakile edentula). How many Mustards can you find this May?
View our Guide to Mustards in NYC
How to Get Started
- Download the iNaturalist app or register at iNaturalist.org.
- Photograph Mustards anywhere in New York City.
- Upload your observations to iNaturalist.
- Respect wildlife (do not touch, feed, or disturb animals, and keep a safe distance).