Evening Primrose is a biennial weed but more likely a wildflower. It has 4 yellow petals and the seed pod is quite distinctive. It is one-eighth inch round and 1-2 inches long.
![Photo of Evening Primrose](images/large/eveningprimrose-full.jpg)
Photo by Dr. John Meade, weed scientist emeritus
Rutgers NJAES Cooperative Extension
![Photo of Evening Primrose Flower](images/large/eveningprimrose-flower-full.jpg)
Photo by Dr. John Meade, weed scientist emeritus
Rutgers NJAES Cooperative Extension
![Photo of Evening Primrose Seed Capsules](images/large/eveningprimrose-seedcapsules-full.jpg)
Photo by Dr. John Meade, weed scientist emeritus
Rutgers NJAES Cooperative Extension