Not if you use one of the approved recipes for cucumber relish and don't change any of the amounts of the other ingredients. Just sub zukes for cukes only.

Or you can simply use the Summer Squash Relish recipe from NCHFP since it uses zucchini anyway.

http://nchfp.uga.edu/how/can_06/summer_squash_relish.html

Dave

There's a recipe I like from Ball--zesty zucchini relish. It has horseradish & peppers, so it can be as zesty as you like depending on which peppers you choose. I haven't attempted pressure canning...yet.

I've made Grandma's Sweet Relish with zucchini and found that they are pretty much interchangeable, so there shouldn't be a problem with a water bath. As Dave mentioned, be sure to use a safe and tested recipe. Grandma's was nearly identical to the one in the Ball Blue Book, other than some seasonings, which made me very happy, I just keep on making it.

Annie

I've made zucchini sweet relish from the Ball Blue Book and really liked it as much as the cucumber relish. Waiting for the zucchini to come in this year so I can make a lot because I eat a lot of it.

Madonna

MMMMMMMM.....homemade relish is one of my favs!!!! The first time I made it was about 5 years ago and relish has never been the same again. I crave homemade relish quite frequently. I may have to find me some zucchini and make some.

Melissa