Trailing begonias & red spider mite??

Hi I wonder if anyone can put my mind at rest? I really fancy some trailing begonias in some baskets this year but a friend told me they attract red spider mite, is this true? (I'm worrying because red spider mite love chickens , I'd hate for my girls to get them, I treat them monthly & the coops with red spider mite powder weekly! prevention is better than cure & all that!)