I only grow 2 citrus tree's in containers and both get fed 3 times a year. The medium is the type of potting soil i get from my local nursery that he uses. I give him hardy figs in the spring and i get whatever i need. I strictly uses Ferti-lome for pecan and citrus and my tree's blooms profusely every spring. For me it works-out good enough.
quote="danero2004"]19-10-5 is the ratio of this product and as far for N is very good because citrus trees are heavy feeders on nitrogen , P is also ok , but the K ratio is a little too low and can not provide or induce good flowering.
This is what I think
http://www.fertilome.com/ProductFiles/10820%20Fruit%20Citrus%20&%20Pecan%20Tree%20Food%20Approved%2009-14-09.pdf[/quote]