Is anything wrong with my Nagami kumquat?
during the spring I bought a potted Nagami Kumquat tree from a local nursery and being my first citrus(I know its not really a citrus) I had a few troubles with my choice of soil, iron deficiency and watering but after i learned from my mistakes it seemed to recover well and exploded with new growth and blooms.
Come October it started to get cold outside so I started moving it in at night and for cold days and back outside for the warm ones before bringing it in for good. I bought a 2-lamp T8 florescent fixture with full spectrum lamps and hung it about 8'' above the top of the tree since it doesn't seem to give off much heat.
Not much happened at first but after a couple weeks the older lower leaves began to turn yellow and fall off and so did many of the still small kumquats.the drop kept accelerating and even green leaves started dropping(all older leaves) leaving some of the lower twigs/branches with little to no leaves but the branches remain green. then the drop abruptly stopped and and everything seemed okay for a while. Now over the past couple weeks the leaves on the top(new leaves) started turning yellow/light green from the tips inward and I'm not sure what is causing it. Also as of last week I noticed some new growth on the top of the tree.
-live in Manitoba Canada
-tree is now in a gritty mix (3/4'' granite, spruce bark, aquarium soil) equal parts
-stopped fertilizing when i brought it indoors
-light is on 12-16 hours a day
-no actual sun light
-tree is kept at room temperature 21-23*C(70-73*F)
-give very light watering once daily to keep soil surface moist
-give heavier watering once weekly (very little drains out)
-give it a rinse in the shower once monthly to clean leaves and flush any salts
-i have checked closely for mites and other pests and found none
-it has been very cold outside lately around -25*C(-13*F) so the humidity is extremely low and I've been spraying the entire plant with water 2-3 times daily
My questions are:
is the leaf/fruit drop normal?
will the still green twigs/branches grow new leaves?
what is causing the yellowing of the newer leaves?
is it normal for it to have new growth in the winter?
is there anything I'm doing wrong?
I have attached some images of my tree below:
This post was edited by TheRiGuy on Sat, Dec 21, 13 at 2:27