When summer ends, most people stop thinking about ticks. But ticks are active all year long, and in Connecticut and across the Northeast, fall brings its own tick risk. Why fall still matters Deer ticks, also called blacklegged ticks, are the ticks that spread Lyme disease. The tiny young ticks, called nymphs, are most active in late spring and summer. Adult deer ticks are most active in the fall and can stay active any time temperatures rise above freezing. That means raking