Crown Of Thorns 101 — plant diseases

Phosphorous toxicity. I have seen posts on social media of Crown of Thorns that are sick because they are over fed and most of the time, the owner does not even know it. Also, I have been asked too many times by my customers of what is wrong with their Crown of Thorns. On this post I will tackle Phosphorous toxicity and I will address the other nutrient toxicities in my next posts. Many gardeners seem to believe that fertilizers that contain high amount of phosphorous will make their plant bloom like crazy. Examples of high Phosphorous fertilizers are 10-30-20,...