Silvervine

Silvervine, called matatabi in Japan, is a climbing shrub in the kiwi family that grows in the mountains of East Asia. Its dried leaves, powdered galls and sticks are sold as cat toys and treats. Cats lick, chew, rub and roll on it in much the same way as they do with catnip.

The effect comes from several compounds, including nepetalactol, rather than nepetalactone alone. In a published comparison of plants, most cats reacted to silvervine, and many of the cats that did not react to catnip did respond to silvervine. Kittens, like adults, differ in sensitivity. The response typically lasts around ten minutes and may be followed by a rest period.

It is considered safe for healthy cats in the small amounts sold for the purpose, and the plant is not addictive. As with catnip, offer it a few times a week rather than daily. Choose products made for cats, since pesticides and additives can be present in garden material, and ask your vet if your cat has a health condition or is pregnant before you offer any new plant. Stop and call your vet if a cat vomits repeatedly or seems unwell.