Michigan is home to some of the finest caddis hatches in the country. From the Au Sable to the Manistee, Pere Marquette, and countless smaller streams, caddis flies are a cornerstone of the trout diet throughout the season. Understanding when and where these hatches occur — and having the right flies in your box — can make the difference between a good day and a great one.
Michigan's Key Caddis Species
Several caddis species are particularly important to Michigan trout anglers:
Grannom (Brachycentrus)
The grannom is one of the first significant caddis hatches of the season, typically occurring from late April through May. These small, dark caddis (size 14–16) hatch in large numbers and can trigger impressive surface feeding. A gray or brown North Branch Caddis pattern is an excellent imitation.
Spotted Sedge (Hydropsyche)
The spotted sedge is the most abundant caddis in many Michigan rivers and hatches throughout the summer. These medium-sized caddis (size 14–16) are tan to brown in color and are a staple food source for trout from May through September. A tan or burnt orange North Branch Caddis is a deadly imitation.
Little Sister Sedge
A smaller caddis (size 16–18) that hatches in late summer and fall. These olive to gray caddis can trigger selective feeding, and a size 16 olive North Branch Caddis is a perfect match.
October Caddis (Pycnopsyche)
The October Caddis is one of the largest caddis species in Michigan (size 8–10) and hatches in — you guessed it — October. These big, orange-bodied caddis are a significant food source for large trout in the fall, and a size 10 orange or burnt orange pattern is the go-to imitation.
The North Branch Caddis: Michigan's Secret Weapon
The North Branch Caddis is a Michigan-born emerger pattern that has proven itself on rivers throughout the state and beyond. Developed to imitate caddis in the emerger stage — when the insect is transitioning from pupa to adult at the water's surface — this pattern features premium Whiting saddle hackle and a sparse, realistic profile that trout find irresistible. Rep it with a Yellow North Branch Caddis sticker or Olive Holy Grail Caddis Emerger sticker.
The North Branch Caddis is available in a range of colors to match the most important Michigan caddis species:
- Gray: Matches the grannom and little sister sedge
- Tan/Burgundy: Matches the spotted sedge
- Burnt Orange: Matches the October Caddis and larger spotted sedge
- Bright Yellow/Light Yellow: Doubles as a sulphur imitation during sulphur hatches
- Olive: Matches the little sister sedge and other olive caddis species
Caddis Fishing Tactics
Emerger Fishing
The most productive time to fish caddis patterns is during the hatch, when insects are emerging at the surface. Fish your emerger pattern in the film — not on top of the water, but just below the surface. A light application of floatant on the hackle only (not the body) will keep the fly in the right position.
The Skating Caddis
Adult caddis skitter across the water surface when laying eggs, and trout key on this behavior. Try skating your dry fly across the current with short, twitching strips — this can trigger explosive surface strikes even when a dead-drift presentation is being refused.
Caddis Larvae and Pupae
Don't overlook the subsurface stages of the caddis life cycle. Caddis larvae (imitated by a bead head caddis larva in brown or green) and pupae are available to trout year-round and are often more important than the adult stage. Fish a caddis larva dead-drift along the bottom for consistent results throughout the season.
Timing Your Michigan Caddis Fishing
Caddis hatches in Michigan typically occur in the late afternoon and evening, with the most intense activity often happening at dusk. Plan to be on the water by 4–5 PM and stay until dark for the best surface action. On overcast days, hatches can occur throughout the day.
Final Thoughts
Michigan's caddis hatches offer some of the most exciting dry fly fishing in the Midwest. With the right flies and a basic understanding of caddis behavior, you can consistently find rising trout throughout the season. Stock a range of North Branch Caddis patterns in different colors and sizes, and you'll be ready for whatever the river throws at you — keep them in a dedicated Dry Fly Box.