Silver Vine is sold in four main forms, and they are not interchangeable. Fruit galls are the potent one. Sticks are mild and mostly for chewing. Powder depends entirely on what it was ground from. Leaves are the weakest. If a product just says "silver vine", it is usually not the fruit.
Silver Vine (Actinidia polygama), also called matatabi, reaches more cats than catnip, including about three quarters of the cats that ignore catnip completely. But that advantage only holds if you buy the part of the plant that carries the chemistry.
Fruit galls: the potent form
A gall is a fruit deformed by a gall midge laying eggs in it. Those deformed fruits carry the highest concentration of the active compounds, mainly nepetalactol alongside actinidine and others. This is the form serious Silver Vine products use.
You will see it sold whole, as hard knobbly fruits, or ground from those fruits into a powder. Whole galls keep their potency longest, for the same reason whole catnip buds do: more of the oil stays sealed inside the plant until something ruptures it.
If a seller has real fruit gall, they say so, because it is the expensive part.
Sticks: for chewing, not for potency
Silver Vine sticks are lengths of the woody stem, sold as chew toys. Plenty of cats enjoy gnawing them, and they can be good for that, but the wood carries far less of the active compounds than the fruit.
So a stick is a fine chew and a weak attractant. If your cat likes chewing wood, good. If you are trying to reach a cat that ignores catnip, a stick is not the strongest tool for the job.
Powder: it depends what it was made from
Powdered Silver Vine is only as good as its source. Powder made from fruit galls is potent. Powder made from leaves or stems is not, and once it is ground you cannot see the difference.
As with catnip, grinding also starts the clock. Powder loses potency faster than whole material because more of the oil is exposed to air. Useful for dusting onto a scratcher or into a toy you will use soon; less good as a long-term fill.
Leaves: the weakest
Silver Vine leaves carry the least of the active compounds of the four forms. They are cheap, and they are what "silver vine" often means when no part is named. Not useless, but not what you buy if potency is the point.
A quick ranking
| Form | Potency | Best for |
|---|---|---|
| Whole fruit galls | Highest | Toys and reaching non-responders |
| Fruit gall powder | High, fades faster | Quick dusting, short-term fill |
| Sticks (wood) | Low | Chewing |
| Leaves | Lowest | Little; usually filler |
How to buy it well
- Look for the named part. "Fruit gall" or "matatabi fruit" is what you want. "Silver vine" alone usually is not the fruit.
- Whole beats ground for anything that has to last.
- Mass-market pet products often use ground leaves or stems, which is why they underwhelm even on cats that respond to Silver Vine elsewhere.
- Store it sealed. Same rules as catnip: air, heat, and light are what kill it.
What we use
We fill Le Croissant with whole Silver Vine fruit, sourced from producers in East Asia, alongside organic catnip buds, at least 30g in total, kept whole inside reinforced OEKO-TEX cotton. Fruit because that is the potent part, whole because that is how it stays potent, and paired with catnip so the toy reaches both groups of cats rather than betting on one plant.