Lion's Tail

I bought three Lon's Tail (leonotis menthifolia 'Savannah Sunset') in May at the Denver Botanic Garden's spring plant sale.  I planted them in one of the large barrels with some Salvia mellifera which I also got at the plant sale.  I have been patiently waiting all summer for the Lion's Tail to bloom.  It has been a long wait.  It is mid-October and I think they are going to finally bloom.  They need to hurry up though because I don't want it to get really cold and then miss them.