Closely related to the sulfur hatch that carries over from late spring, pale morning duns call for similar patterns in smaller sizes as the season progresses.
A parachute Adams tied with a pale yellow or green body works great during this stretch, since its visible post makes it easy to track on faster water.
Yellow Sallies & Early Summer Stoneflies
Yellow sallies show up during early summer, particularly on Tennessee's mountain streams. These small stoneflies bring trout to the surface with an eagerness that surprises you if you are unfamiliar with the hatch.
A yellow-bodied dry fly, fished with a natural drift along current seams and near overhanging structure, produces great results during this window. Because yellow sallies tend to hatch sporadically rather than all at once, blind fishing, likely holding water with this pattern, usually works as well as targeting visible rises.
Blue-Winged Olives Return in Cooler Stretches
While blue-winged olives are best known as an early spring hatch, they make a return appearance during cooler stretches of summer (especially at higher elevations). Brookies respond to these small mayflies the same way they do earlier in the year. They rise steadily during the hatch window and usually ignore larger patterns in favor of something closer to the natural insect's size and color.