Katydids, also known as bush crickets, are not harmful to humans, although it would seem that their bite can be quite strong. Hence their name, Katydid. Whilst some species do have the ability to secrete harmful chemicals as a defence mechanism, their bite is not harmful in that regards.Click to see full answer. Herein, are katydids harmful to gardens?Katydids look like grasshoppers but you can tell them apart by their antennas, which are as long as their bright green bodies. You’ll normally find these insects in shrubs or trees in the garden, since they are leaf eaters. Generally, katydids in the garden nibble leaves but do not do serious garden damage.Furthermore, are katydids destructive? Broadwinged Katydids are much less destructive than their grasshopper relatives. They also help control small insects by eating them. The best defense is a strong offense when it comes to protecting your vegetable garden against damaging insect pests. In this regard, can you eat a katydid? Our edible katydids are sourced from insect collectors in Thailand and Cambodia. This packet of Katydids are cooked and ready to eat, you can eat the whole bug straight from the bag, or you can add them to other foods, for example pizza toppings, or salads. There are many possibilities.Are katydids aggressive?Most of us will hear but not see katydids because of their nocturnal and arboreal nature. Too bad. These insects are slow moving and very interesting to examine. They are not aggressive and tolerate a bit of prodding so are a good insect to introduce to children.