Nectar can mean different things for different butterflies. For some it is good dick with mind blowing O's, for others it is family, stability and children, yet for others it can be status and lifestyle, and for others it is money, power and access to resources. The trick is to find out which type of nectar the butterfly likes and provide it when it's needed. If the nectar ever runs out rest assured the butterfly will fly off and seek other gardens/flowers to pollinate.