To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
As stated in the book, this is more for experienced gardeners than for beginners, although some of the information provided will be helpful to beginners, too, especially those who think that they want to grow a dozen zucchini plants for a family of three! There is enough information on each of the 55 veggies, fruits and herbs to provide a good overview, without getting minutia. This would have been a 5 star review if there was a chart in the book for how many plants per person. Instead, that information has to be looked up plant by plant. A chart would have made it easier to plot out the garden.