What's the plural ending? růžy ?
In accusative? Plural accusative is the same as plural nominative, "růže".
That's the "ovce" paradigm, right?
Perhaps, depending on your textbook...
I was told "růže" is the template, our grandparents were told "nůše".
Oh, well, that was a random placeholder name. In the Tips and Notes in the course it's called "ulice pattern"
This website is awesome for figuring out endings both for singular and plural. Just type in any word.