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Castor oil treatment for voles

Ben D (zone 7b)
4 months ago
last modified: 4 months ago

I tried the castor oil treatment last fall, using a hose-end sprayer as described on the nhhostas website, but I still had two to four hostas damaged by voles.

I know not to use unscented castor oil, but how can I be sure mine is unscented? Should it have a strong odor? Mine does not -- but it was advertised as being useful against voles.

Any tips for rejuvenating a hosta that has been partially decimated by voles?

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