CHS Lawn and Garden 21-0-0 Extended Release 15#

Bottom Line: I needed a high-quality nitrogen source for my struggling lawn (preferably NH4+ or more commonly known: Ammonium Sulfate) and this product provides.Background: Like more people reading this review, I am becoming a lawn fanatic. I recently learned that different types of nitrogen sources react differently with soil and plant uptake. Initially, a quick search on Amazon for Ammonium Sulfate (NH4+) fertilizer produced this product. The pictures provided by the seller only shows the back of the product. So, I was not 100% confident that this was the correct product. Well, I took a risk and ordered it anyway. It was shipped to me, and the front of the bag does identify it as Ammonium Sulfate (NH4+).**See My Attached Picture**Why You Should Care: I live in San Antonio, TX and recently had an analysis of my soil. It shows that the nitrogen in my lawn was predominately Ammonium Nitrate (NO3-). NO3- is a decent source of nitrogen – however, the soil in my area typically has a high pH value (mine is 7.5). Soil pH can be high in south Texas. However, the good news is that NH4+ brings a slight acidity component and will assist in lowering my soil's pH. So not only do I get a good source of nitrogen, I am reducing the pH of my soil at the same time… that’s a win-win situation.Conclusion: I do recommend this product. Be warned and get a pH analysis completed first. I have been cautious and spreading the NH4 a small amount at a time. My lawn is responding well with the grass being definitely greener and now growing in previously sparse areas. My next soil analysis will be in 6 months or so (November 2018), so I will try to remember to post an update on the pH and overall lawn health.What’s Next?: Improving my lawn/soil's Potash/Potassium. It never ends….. :)

I fed my Pecan Tree this 21-0-0 late winter(Feb). Now the catkins are growing well. It will take about 2 years to see the results of more Pecan production. Thanks for a great product and excellent delivery service.

Its worked fine. Not sure about the "extended" release bit though.