It is natural, whether or not it is organic. The difference lies in the method of production.
With organic maple syrup, no cleaning products can be used during the boiling season. The stands of trees have to be properly maintained. Things must be monitored. There is also a list of requirements that have to be followed meticulously every day. Producing that kind of maple syrup requires much more work. That is what explains the difference between the two products.
Both are natural, whether organic or not. The difference is in the method of production. Equipment requirements are much more rigorous for organic products.