Why Spring in New Jersey Makes This So Confusing Springtime in New Jersey brings a big shift - trees bloom, grass starts growing, and pollen levels spike across the state. At the same time, cold viruses are still circulating, especially in schools, offices, and public spaces. Because both conditions affect your sinuses, throat, and breathing, it’s easy to mix them up. The key is understanding what’s causing your symptoms, how they feel, and how ...