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Juniper Bonsai in Trouble

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Old 12-Nov-2007   #1
NLN
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Juniper Bonsai in Trouble

I have a juniper bonsai, perhaps 15 or 20 years old, which has been in my care for about 4 years. The tree is about 18" tall and about as wide.

During most of that time the tree has been doing well, and I transplanted it once two years ago. This year, however, it has not been doing as well, and I am concerned about it.

The tree had very little new growth this year, and put out a lot of little "cones" in the spring. It is now beginning to put out another crop of cones.

The foliage is not the bright green that it once was, but has turned a gray green. In a few instances, small shoots have turned brown and died.

The new growth that is visible is on some branches but not all, and is a bit spotty, and localized.

For the first few years that I owned the tree I watered it once each morning and again in the evening. Since this problem has been occurring I have been setting the tree in a tray where it may "suck up" the water from below as well as above, but this doesn't seem to make much difference.

The tree looks as if it isn't getting enough water, but I don't think this is the case because the soil is always damp and moss is growing beneath the tree.

Could I be over-watering the tree? Would it look this way if I was?

I am probably not fertilizing the tree enough, but I'm afraid to try anything now, for fear of harming the tree further.

Any suggestions would be very welcome!
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Old 12-Nov-2007   #2
Bonsai Barry
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You're watering may be too ambitious. If you're watering it from above and below, you may be forcing all of the air out of the soil. I think you'd be better off watering less frequently and keeping it out of bright direct sunlight. I'm assuming that you're keeping it outside. If not, do so immediately. If you posted photos showing the tree, the pot and the soil, you may get some needed advice.
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Old 12-Nov-2007   #3
gregb
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Some history about where you have been keeping the tree would be helpful...indoors or out? Where do you live--what hardiness zone, etc.?

My guess the reason the tree looks like it isn't getting enough water is that it isn't. Because you've kept it in a tray and watered it twice a day, it's feet are wet so to speak. There is a perched layer of water at the bottom of the pot that never leaves because of the tray at the bottom of the pot and this has rotted some/all of the roots. With no roots, no water is being taken up by them.

My advice would be to 86 the tray--death sentence for a juniper. If you are keeping it indoors, look around outside for a sheltered place to winter it outdoors, preferrably an unheated garage or shed. Carefully lift the tree out of its pot and inspect the roots around the sides and bottom of the rootball. If they are mushy and soft and there are no white feeder roots and there is a rotten smell, you have root rot. If you don't, put the tree back in the pot and lose the bottom tray.

If you have root rot, reply again to this thread and we can take it from there. Are there any bonsai clubs near you or bonsai nurseries you can consult?
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