A little katydid damage to the garden does not require any action or treatment as katydids don't do much damage or kill plants. Katydids do eat the leaves and flowers of plants, but you often won't even notice the damage.

Should I get rid of katydids?

Katydids are usually considered gentle insects that aren't harmful to humans. Some people consider them garden pests; however, they usually don't cause serious damage to your plants or vegetables.

Are katydids aggressive?

In fact, their large "biceps" and over 2.5 inch body make them among the biggest insects to currently exist, National Geographic reports. ... Their combative instincts also make them stand out from other species.