I agree; vigor makes more sense as a reference to overall health, perhaps with increase and fertility as helpful, related sub-categories. It is so beneficial to illuminate and cluster separate aspects of the whole under a larger umbrella.
Some people look for fast increase to fill out their lots more quickly, and others prefer to maintain a smaller design space. Fertility, which may not seem like a priority for display-only home gardens, still impacts what will be available to everyone in the future. Overall health is important to all gardens, so sub-categories that could cover further specialization such as increase and fertility would seem to be of benefit to everyone.
