New to citrus normal leaves have fallen off all my citrus
I bought a 35 gallon Meyer's lemon, a blood orange, a satsuma and a honey bell minneola from a friend who owns a reputable nursery. The plants came from Record Buck and were all quite beautiful and healthy. They were in the ground 2 weeks and then my friend fertilized them all in the middle of February. He said they needed citrus fertilizer and that I shouldn't wait to March to do it. Within 2 or 3 days all of the trees lost a ton of normal green leaves. I'm new to citrus, so I don't know what I'm doing. I doubt the defoliation was related to transplant shock since the plants had been in the ground for a few weeks and since they all lost maybe 3/4 of their leaves over night. I'm assuming that this is related to the citrus fertilizer. Does anyone know? Since then, new tender growth has appeared on all of the plants and they are doing fine. Is this defoliation normal and if so, should I expect it every other month when I fertilize? Thanks!