Is anyone growing nepeta grandiflora, 'Wild Cat' catmint?

Zoned for zones 5-8, I'm wondering if it would get enough winter chill down here in zone 23. Sounds good...to 4 ft x 5 ft. Only problem might be that the catmints I grow now can take a cat wallowing and smooshing them..they flatten out but recover. The tall, more shrubby 'Wild Cat' may end up with broken stalks....

What I've been growing is 'Six Hills Giant' though I definitely don't think it is...think it's another case of incorrect labeling for one reason or another.....