March Brown
March Browns are one of the earliest significant hatches in both Eastern and Western streams. The dark mottled wings and brown body match Rhithrogena species that hatch in fast, well-oxygenated runs in early spring. Fish the March Brown high on the water in riffles and pocket water where the naturals struggle to emerge. Best presented with short, accurate casts.
- Type
- dry fly (Mayfly)
- Hook sizes
- #12–14
- Target species
- trout
- Difficulty
- intermediate
- Best seasons
- spring
Materials
- hook: Dry fly hook #12–14
- thread: Brown 8/0
- tail: Brown speckled partridge fibers
- body: Hare's ear dubbing or tan-brown dubbing
- ribbing: Yellow thread
- wing: Woodduck flank or brown hen wing, upright
Tying steps
- Mount a size 12–14 hook; start brown thread and wrap to bend.
- Tie in brown speckled partridge fibers as a tail.
- Dub a tan-brown hare's ear body from bend to the 2/3 mark.
- Wind yellow thread ribbing over the body in 5 even spirals.
- Tie in woodduck or brown hen wing upright and divided; figure-eight apart.
- Tie in a brown and grizzly hackle behind the wings.
- Wind hackles 4–5 turns; tie off, build small head, and whip finish.
- Inspect the mixed hackle from below — the brown and grizzly fibers should be evenly interspersed, creating a mottled, naturalistic footprint.