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.
I used it this past spring and can confidently say that it made my plants look bigger and livelier than before. Yes it doesn't look like the most natural fertiliser and it won't improve your overall soil quality but it definitely delivers the nutrients and food that plants need. It's so simple I usually just mix two spoons to a 9L watering can and just give the plants a good feed every 2 or so weeks. It's definitely a quick solution for plants that aren't looking that great or just need a quick boost. I won't solely rely on this as I believe plants do need some compost or organic matter to improve overall soil quality as well but this is great when I don't have much time to garden.