Posted: 28/03/2015 at 09:34
I've grown it for a few years, and it sometimes survives the winter outdoors, but not always. It also sometimes self seeds and grows again in the same patch, but not always, probably because cats love it too much and nibble it and roll all over it before it gets established and grows again.
I grow it in pots in the greenhouse, and plant out when its established, into an area of the garden where I'm happy for the cats to enjoy it. It over winters ok in the greenhouse and is ready for the garden in spring, as well as a fresh source of leaves for the cat in winter when there would be none still growing outdoors.
My seeds were originally Mr F's variety, Nepeta Cataria.
From what I've read, not all cats react to it, maybe around 2/3rds. Of those, some prefer it fresh and green and straight off the plant, others prefer it dried like it would be in cat toys.
It's a wonderful plant, both for cats and pollinating insects.