The same wildflowers can be seen by the edge of the woods bordering Lafayette Ave, Hackensack (woods to the tennis courts), Beechwood Park… anywhere there is some sun (and no herbicides have been applied).
Search “wildflower” for more information &other photos of local spring blooms over the years.
Enjoy photos of other New Jersey spring wildflowers on the Native Plant Society of New Jersey website (they have a Bergen chapter—with local activities): http://www.npsnj.org/photo_galleries/photo_gallery_spring.html.
Another interesting and informative site is: http://uswildflowers.com/stateref.php?State=NJ
Finally — here is very helpful link to a site to use to identify wildflowers: