5 Tips for Summer Fly Fishing with Terrestrial Insects

Although trout will eat terrestrial insects during much of the fishing season, summer marks the peak of terrestrial insect activity, which means trout are feeding heavily on land-based insects.

From grasshoppers to ants, trout will readily hit terrestrial insect imitations during the summer months, offering a fun and productive opportunity for fly anglers.

Here are five tips on how you can catch more trout with terrestrials this summer.

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Float or Sink

Most terrestrial imitations are tied as floating flies. While floating terrestrials are very effective, do not overlook sinking terrestrials.

Try an experiment of throwing a land-based insect into a trout stream. Often, that insect initially sinks when it hits the water. For this reason, sinking terrestrials can also work well, especially if traditional floating flies do not seem to be working.

Best Times

Terrestrial insects tend to have their peak activity during the low-light hours of morning and evening. These are also the best times to fish with terrestrials. One exception is the grasshopper, which is often most active during the day.

Windy days are also very good times to fish with terrestrials, because many land-based insects will be blown into the water and trout will be on the lookout for these high-calorie meals.

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Stream Zones

The traditional tactic when fishing terrestrials is to work the edges of the stream, the most likely areas terrestrial insects will fall into the water. While this is an effective tactic, anglers should make sure to cover the entire stream.

While it is true that land-based insects usually fall into the stream near the edges, once they are in the water they will be pulled to different areas of the stream. For this reason it is important to work the stream just as you would with an aquatic insect imitation, fishing the closest water first and gradually working your way toward the opposite bank, until you have covered the entire stream section.

Drift

If you go back to the experiment of throwing a terrestrial insect into the water, you will notice that when land-based insects hit the water, they do not make much movement.  This is proof that a dead drift is the best way to fish a terrestrial.

Of course, it does not hurt to add a subtle twitch to your terrestrial as it drifts along, but do not make any significant movements that look unnatural. This is more likely to scare the trout away, rather than entice a strike.

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Match the Hatch

Just as you would with aquatic insects, it is important to fish with a terrestrial imitation that resembles the insects that are currently available to the trout.

The best tactic is to search along the shore to see if you can spot any beetles, grasshoppers or other insects. If you see an insect that is noticeably prolific, fish an imitation that resembles the shape and size of that insect.

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