in general ....

july is root growing time.. when the hosta starts storing energy in new roots .... to come out of dormancy next spring...

if you cut off all the food making tissue ... those ugly skeletal leaves ... then how will it store energy???

and.. it will burn more energy in replacing them..

so i would speculate that you will have a smaller clump next season ...

now.. all that said.. with the undulatas .. you could probably throw them on the driveway for the rest of the year.. and they will be bigger next year anyway ...

why dont you just do it.. and become the expert on rejuvenation pruning of hosta ...

of course.. you will have to do something about the bugs at the same time... or you will just be back where you started ...

ken

Thanks, Ken, for the info on the growth cycle. I think that first I have to move the spotlight. I'd probably be better off just moving the swiss cheese hosta somewhere else and replacing it with another from a 'not so important' area. I've never had a problem with bugs on hostas before this year.