What is the best frequency at which to fertilize fruit trees?
The first method is to dump a large amount of fertilizer to feed the plant one or two times per year. This method was the preferred method listed in my gardening book. The reason not specified. I question how this method is sustainable. Wouldn't the fertilizer seep out of the reach of the roots after a few good waterings?
The second method is to either use slow release fertilizer or use small amounts of fertilizer every time you water. This second method was never discussed in my book. I realize this method is more tedious, but I do have the dedication to do it if it is beneficial to the plants. This more frequent method also seems to avoid burning the roots.
If it matters, I have various fruit trees: pomegranate, cherry, guava, lychee, wax apple, dragon fruit, goji berry, blackberry, raspberry, and strawberry. Most are young and in containers. The bigger ones are in the ground.