Did you know that most fertilizers on the shelf at hardware stores are not based on good science? There seems to be a plot to get us to over apply phosphorus, which is bad for the environment. They have taken phosphorus out of lawn fertilizers, but non-lawn fertilizer still have incorrect fertilizer ratios, resulting in the continual overapplication of phosophrus in our gardens. Garden chemical suppliers at hardware stores are not doing a good job of getting us products that are healthy for the garden.
I went to home depot to get some fertilizer for my potted plants outside. They haven’t been growing well, mainly because I have not put any form of fertilizer on them. Potted plants are difficult to grow successfully without additional fertilizer. I was looking for something fairly cheap and easy. When I got there I stared at the shelf in bewilderment. I knew I wanted a fertilizer with an unbalanced ratio, something looking like 5-1-2, and I wanted a slow-release granular type for ease and to avoid over application. At first glance, nothing was close. I finally found this:

I am using this on potted herbs and flowers. It was the closest I could find to what I wanted. It was interesting looking at these fertilizers marketed for different kinds of plants. Fertilizer is fertilizer and tomatoes, lawn and flowers all use the same chemical stuff. They tweak rations and percentages but its all marketing and not based on good science.
The general public will often go to a store if they have a problem with the garden, or need a good product. Most of the time they don’t come prepared with the knowledge of what they actually need. When they get there, they find a lot of chemical-junk products. I found out that even if you go knowing what you need and what would be best for your plants, the product is often just not there. What results is a lot of overuse of chemicals. Unfortunately, if you want a decent garden and reduced chemical use, you usually also have to have some sort of garden training. Without it, it is easy to get overwhelmed by the massive amount of horrid chemical products on the shelf.
I’m not necessarily again chemical use: I have yet to grow a completely organic garden. Chemicals, including pesticides and inorganic fertilizers, can be part of sustainable gardening, mostly as a last result. But walking into Home Depot they seem like the only option and often the ones that are heavily promoted are poor products. I can never seem to find the type of low-impact chemical solutions that I would also recommend to people.
What I would like to see is gardening education in the store so that you can walk into a store and the most sold and promoted product is also the one that is best for your garden. Right now there is a great divide between what is recommended by experts and what is actually on the shelf. If we really want sustainable and smart gardening to take off, it’s going to have to happen in the hardware stores and garden centers as well as in blogs and book. Authorities can recommend practices and types of products all they want, but to really be effective the products need to be available on the store shelf and marketed correctly.