Hi,
I am new to growing citrus trees. I don't have much space so I intend to grow them in containers. I have my first one which is a still small mandarine orange tree, later this year I am adding a persian lime and a valencian orange trees from a local nursery.
I was thinking on using fertilizers that are readily available here: Urea, 12-12-17, Bone Meal and Epson Salt. I mixed these up to try to mimic somewhat the 5-1-3 theoretical ratio of citrus needs (if I understood this correctly), and got a fertilizer with a 19N-9.3P-11.7K-1.4Ca-0.3S-0.22Mg (this has a proportion of 5N-2.4P-3K which I figure is close enough).
I have also read and seen a bunch of videos that recommend monthly feeding for fruit trees in containers (citrus, figs, etc...). I was thinking that it would be wise to follow this recommendation.
The question is how much to add to each tree of this fertilizer each month? And then I imagine that the rate will vary depending on the size of the tree.... For example, how much:
1) When the trees are small in a 1 gallon pot,
2) When the trees are medium sized in a 5 gallon pot,
3) When the trees are producing on the first couple of year,
4) When the trees are over 2 years of age.
Thanks for any recommendations you can give me.