BWO or Baetis
Blue Wing Olive hatches are one of the most consistent and important mayfly hatches for trout, especially in spring and fall.
Best Flies for the Blue Wing Olive (BWO) Hatch
Best time: Overcast days, late morning to afternoon
Season: Spring and fall (can occur year-round)
Water: Slow to moderate currents, tailwaters, spring creeks
Trout behavior: Selective feeding on small mayflies and emergers
Match your fly to trout behavior—dry flies for surface feeding, emergers for selective fish, and nymphs when trout are feeding below.
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Blue Wing Olive - Mayfly Dry Fly
$0.98Original price $1.09Original price $1.09 - Original price $1.09Original price $1.09$0.98 - $0.98Current price $0.98The Blue Wing Olive is a must-have for matching one of the most consistent and important mayfly hatches across trout fisheries. When conditions tur...
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Parachute Blue Wing Olive - Mayfly Dry Fly
$0.98Original price $1.09Original price $1.09 - Original price $1.09Original price $1.09$0.98 - $0.98Current price $0.98BWO is one of the most prolific and long lived hatches. This versatile color can also cover both the Pale Morning Dun and Pale Evening Dun. If you...
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Flashback Pheasant Tail-Beadhead
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99A great improvement on this all-time classic pattern. Many nymphs take on a very shiny appearance right before emerging. Trout key in on this vuln...
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Pheasant Tail-Beadhead
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99One of the top five trout nymphs ever tied on a tippet. A near perfect imitation of the blue wing olive nymph, also works great for a general mayf...
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Barr's Emerger BWO-Beadhead
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99Excellent pattern when fish are on the surface but not hitting the duns. Trailing shuck and beadhead make this a great pattern to cast upstream, a...
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Barr's Emerger BWO
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99Excellent pattern when fish are on the surface but not hitting the duns. Trailing shuck make this a great pattern to cast upstream, and allow to ...
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Flashback Pheasant Tail
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99Like all the Pheasant Tail patterns, this one has a spot in every trout fisher's fly box. One of the best all time emerging Callibaetis patterns, ...
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Pheasant Tail Emerger-Beadhead
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99An excellent pattern for imitating all sorts of emerging mayfly nymphs. Combines the attributes of the beadhead nymph with the attributes of an ...
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Blue Wing Olive Thorax - Mayfly Dry Fly
$0.89Original price $0.99Original price $0.99 - Original price $0.99Original price $0.99$0.89 - $0.89Current price $0.89Thorax style flies feature a single wing, and more hackling. Often fished with a 'V' cut in the bottom hackle to allow it ride lower. Proponents o...
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Juju Beatis Flashback
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99Tied skinny on a curved nymph hook. Flash, excellent for skinny water, temperamentally challenged fish. Many nymphs develop a shiny back before ...
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Mercury Flashback Pheasant Tail
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99Your all-time favorite pattern with a bead that imitates the gas bubble nymphs ride to the top. This one will quickly be one of your must-haves. ...
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Parachute Blue Wing Olive Blue Dun Post - Mayfly Dry Fly
$0.98Original price $1.09Original price $1.09 - Original price $1.09Original price $1.09$0.98 - $0.98Current price $0.98One of the most prolific and long lived hatches. Presented here with a blue dun post, to closer match the wing of the natural. If you have never f...
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Pink Pheasant Tail - Beadhead
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99Designed as a mayfly pattern, the pink pheasant tail is meant to take that extra leap past the Egan's Frenchie in attraction. Pink and purple are ...
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CDC Biot BWO Thorax - Mayfly Dry Fly
$0.89Original price $0.99Original price $0.99 - Original price $0.99Original price $0.99$0.89 - $0.89Current price $0.89Thorax style flies feature a single wing, and more hackling. Often fished with a 'V' cut in the bottom hackle to allow it ride ...
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Juju Baetis Tungsten - Umpqua
$3.75Original priceOriginal price $3.75 - Original price $3.75Original price$3.75 - $3.75Current price $3.75One of the most infamous baetis patterns in history. This pattern has been one of the top producers of picky fish across North America. Baetis are ...
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Bead Wing Midge - Solitude
$2.20Original priceOriginal price $2.20 - Original price $2.20Original price$2.20 - $2.20Current price $2.20One can never have to many midge patterns, and this a great nymph to add to the box. Bead Wing gives this emerger a look that only a transparent ...
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Baetis Dun - Mayfly Dry Fly
$0.89Original price $0.99Original price $0.99 - Original price $0.99Original price $0.99$0.89 - $0.89Current price $0.89The marvelous baetis like the energizer bunny, just keeps on ticking. A very exact imitation of baetis during many hatches. These insects can va...
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Baetis Zinger - Mayfly Dry Fly
$0.89Original price $0.99Original price $0.99 - Original price $0.99Original price $0.99$0.89 - $0.89Current price $0.89The marvelous baetis like the energizer bunny, just keeps on ticking. A very exact imitation of baetis during many hatches. These insects can va...
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Bread Line Emerger
$0.89Original price $0.99Original price $0.99 - Original price $0.99Original price $0.99$0.89 - $0.89Current price $0.89When mayflies are hatching, fish will readily target emergers as the hatch begins. Fish commonly wait as nymphs wonder from the depths to the surf...
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Darth Baetis - Umpqua
$3.59Original priceOriginal price $3.59 - Original price $3.59Original price$3.59 - $3.59Current price $3.59This juicy little Baetis pattern produces fish under the spookiest of circumstances. From Colorado to Maine, baetis nymphs are a huge source of foo...
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Christiaens' GT Adult - Montana Fly Co - Mayfly Dry Fly
$2.93Original price $3.25Original price $3.25 - Original price $3.25Original price $3.25$2.93 - $2.93Current price $2.93It's a great all-around mayfly dry The klinkhammer-style curved hook leaves much of the fly's body under the surface, represents a struggling emer...
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Slam Dunk BWO
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99Blue Winged Olives are the most important food source for trout. BWOs hatch from early fall through late spring and provide many trout with the bu...
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Parachute Extended Body BWO - Solitude - Mayfly Dry Fly
$2.37Original price $2.63Original price $2.63 - Original price $2.63Original price $2.63$2.37 - $2.37Current price $2.37This fantastic little dry fly for the pickiest trout. Soft and realistic, this is a proven winner. Customer requested, this one should have been i...
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Arnot's Pocket Drone Pink Bead - Fulling Mill (Barbless)
$3.33Original priceOriginal price $3.33 - Original price $3.33Original price$3.33 - $3.33Current price $3.33Arnot’s Pocket Drone – Pink Bead (Barbless) Baetis & Mayfly Nymph with Hot Orange Butt Arnot’s Pocket Drone – Pink Bead (Barbless) is a...
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Blue Wing Olive (BWO) hatches often bring out selective trout, especially on pressured rivers and tailwaters. Matching size, profile, and presentation is usually the difference between refusals and eats. Most BWO fishing happens in sizes 16–20, with emergers outfishing dries when trout are feeding subtly in the film. Target softer seams, eddies, and slower edges during active hatches.
BWO hatches peak in spring and fall and are strongest during overcast or rainy weather. These mayflies can hatch multiple times a year and often produce longer, more consistent windows than other mayflies.
Trout key in on specific stages of the insect, so adjust your flies as their behavior shifts. Use dries when fish are rising confidently, switch to RS2s or emergers during subtle sips, and downsize if fish are refusing your presentation.