Phosphate fertilizers are hard to find in stores because they are banned for residential use in many areas due to overuse and subsequent water quality issues that it has caused. If you need P and K fertilizer for your garden, your best bet will be at your local farm supply store or, if you can find one that will work with you, a nearby farm co-op. Walmart and other big chain stores just won't carry anything with phosphorous in it. All this, by the way, should serve as a reminder that we should all be responsible when using fertilizers and pesticides - even on small areas. If we dont self regulate, the government will tell us when, where and how we can use these materials - if we are allowed to use them at all. Sorry for the speech - I just felt it was a good time to issue a reminder to everyone!