Don't know where you live, but the folks at your county's Extension Service office could provide effective suggestions.

To locate that office, use this interactive map - http://npic.orst.edu/pest/countyext.htm

In the meantime, see this https://hortnews.extension.iastate.edu/cicada-killer-and-other-digger-wasps

where are you ... is this a current problem.. or something you are planning for next spring ...

what jean said .. but on a bed that small ... i dont know why you couldnt dig out all the plants you want to keep.. and then double dig the whole bed ...then replant the plants ...

i have these things in my pole barn ... and they are more than welcome to the area ... as i seem to hate cicadas more than them.. lol ... they seem to thrive in the barn sand.. undisturbed for years ... and i only go in there once a week to get the lawn mower ...

that said ... it would be nice to get a full and proper ID ... to be sure they are what you think they are ... because if they are.. i simply dont think they will ever attack you ... but i would sure want to be sure ...

ken

sorry.. forgot the link about double digging ... ken

https://duckduckgo.com/?q=double+dig&t=ffcm&ia=about

Nicole, I've stepped on one of these insects with a bare foot. If you want me to tell you what it felt like, let me know!