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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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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Barbless Blue Wing Olive - Mayfly Dry Fly
$1.07Original price $1.19Original price $1.19 - Original price $1.19Original price $1.19$1.07 - $1.07Current price $1.07The most precise Blue Wing Olive or Beatis pattern out there. Rides high and true to fool the most wary of fish. When you see tiny 'sailboats' on...
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Barbless Beadhead Flashback Pheasant Tail
$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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Barbless Beadhead Pheasant Tail
$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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Blue Wing Olive Wet Fly
$1.09Original priceOriginal price $1.09 - Original price $1.09Original price$1.09 - $1.09Current price $1.09This prolific hatching mayfly makes itself available to fish and fly fisher year around in many locations. A real fish producer. Wet flies are a s...
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Barbless Parachute Blue Wing Olive
$1.07Original price $1.19Original price $1.19 - Original price $1.19Original price $1.19$1.07 - $1.07Current price $1.07Overview: 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 ...
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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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Blue Wing Olive Quill Body - Mayfly Dry Fly
$0.89Original price $0.99Original price $0.99 - Original price $0.99Original price $0.99$0.89 - $0.89Current price $0.89A quill body version of the infamous BWO. Rides high and true to fool the most wary of fish. Slender, segmented quill body
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Barbless Pheasant Tail
$1.09Original priceOriginal price $1.09 - Original price $1.09Original price$1.09 - $1.09Current price $1.09A classic nymph, peacock thorax, slender pheasant tail body. The wire rib presents a nice segmented look, in addition to adding flash and durabili...
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Baetis Cripple - Mayfly Dry Fly
$0.89Original price $0.99Original price $0.99 - Original price $0.99Original price $0.99$0.89 - $0.89Current price $0.89Guess what, fish have become more sophisticated. There are times when they are so selective they only will hit the cripples. Be prepared with th...
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Barbless 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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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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BWO Poxyback
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99Quite simply one of THE great hatches. Many, many anglers rely on this hatch to provide them with the bulk of their warm weather fish. Begins as e...
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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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Bear Baetis Nymph
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99Baetis are a extremely popular food source. This pattern is slim and flashy. Great in better much every column of water. Subsurface, deep down, or...
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Blue Wing Olive Extended Body - Mayfly Dry Fly
$0.98Original price $1.09Original price $1.09 - Original price $1.09Original price $1.09$0.98 - $0.98Current price $0.98Extended bodies are great for creating a larger body without using a large hook. A cdc post, backed by a white wing help a make this pattern visib...
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Blue Wing Olive Assortment--36 Flies #6
$36.25Original priceOriginal price $36.25 - Original price $36.25Original price$36.25 - $36.25Current price $36.2536 flies, representing the different stages of this prolific mayflies life-cycle. Flies range from sizes 16-20, based on availability. Includes: ...
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Barr's Emerger BWO - Glass Bead
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99Barr’s BWO Glass Bead The Barr’s BWO Glass Bead is a subtle, effective mayfly pattern designed for selective trout feeding on Blue-Winged Olive nym...
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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.