What is the difference between New Zealand and Australian Manuka honey?

Manuka honey is a specific variety of honey that originates from New Zealand and Australia. It is made by bees that get their nectar from flowers from the Manuka bush, which is indigenous to New Zealand. The difference between Australian and New Zealand honey stems from the plant the honey is made from. In New Zealand, Manuka honey is derived from a plant called Leptospermum scoparium, which is part of the larger plant family Leptospermum, of which there are over 80 different species. In New Zealand, in order to be called Manuka, the honey can only be derived from the Leptospermum scoparium. Australian Manuka honey, on the other hand, is derived from multiple species of the Leptospermum plant, as the plants are often grown side-by-side. Australian Manuka honey is slightly darker than its New Zealand counterpart.