I'm having trouble with my young valencia orange tree. The veins are still green, but the leaves have some yellow - seems to be a problem all over the tree.
Is this chlorosis? Do i treat it with nitrogen, or with iron, or with something else, or with a combination?
I had used miracle grow fertilizer spikes, so I was surprised to see yellow leaves.
Here is a link that might be useful: these are the spikes we used