Purple Haze
Imitates: Generic mayfly attractor (Adams variant)
Quick Reference
- Best Sizes
- #12-18
- Best Season
- Summer
- Best Conditions
- Western pocket water, freestone rivers, attractor situations
- Water Temp
- 55-68°F
- Recommended Tippet
- 4X-5X
How to Rig It
Single dry or as the dry in a dry-dropper rig with a small nymph 18-24" below.
How to Present It
Cast it tight to seams and pocket water. The purple body somehow triggers strikes when matched-the-hatch flies don't.
Why It Works
Andy Carlson tied a purple-bodied Parachute Adams almost as a joke and watched it out-fish every traditional pattern on Montana's Bitterroot. Nobody knows why purple works — it just does. Theory: purple appears black underwater but reflects UV light, creating a unique silhouette.
History
Andy Carlson invented the Purple Haze on the Bitterroot River, Montana in the early 2000s. It's now standard in every Western fly shop and the unofficial state fly of Montana.
Pro Tip
When the river is flat and nothing is hatching, tie on a #14 Purple Haze. It catches fish that have refused every match-the-hatch dry in your box.
Frequently Asked Questions
Why does the color purple work for trout?+
Best theory: purple reflects UV light and appears as a strong silhouette against the sky. Trout see UV; we don't.
Where is the Purple Haze most effective?+
Western freestone rivers — Bitterroot, Big Hole, Madison, Yellowstone. Works as a generic attractor when nothing specific is hatching.
Not sure if Purple Haze is right today?
Get a fly recommendation based on live water temp, flow, sky, and time of day for any river in the US.
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