Chinese Elm loosing leaves

Luis46

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My chinese elm tree is loosing leaves. I bought the tree two years ago and it has been doing great until now. I am in the Valley of Los Angeles and it's getting hot, but not as hot as last year, so I don't think this could be the problem. When I purchased the tree I was told that they had replaced the soild in 2002. I Water my tree each day and it has really good drainage so I am wondering of my solid needs to be replaced becase it might be depleted in menerals?. I did take the bonsai to a bonsai master and he told me it needs water and more sun. He touch the soil and he said it was dry. I purposely did not water the tree that morning as the pot would get too heavy for me to carry, but I do notice when I water it drains really well. I been following the instructions of watering my bonsay since I bought it and this is the 3rd day and is still loosing the regular leaves. It does have new baby leaves on the tops bit not sure what will happen. The tree is looking very naked. Here are some pictures. Thank you all in advance.
 

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that doesn't look like chinese elm to me... unless some very special variety... chinese elms leaves on the edges are not round... serrated I think is the english word to describe it...

having said that the tree you have doesn't seem to have some massive problem... new shoots look good... foliage is all green (based on your photos)... normally water problems would result in at least some foliage to get yellow...
 
Time for a new bonsai master! That is definitely NOT a Chinese elm.

We do not change soil because it has run out of minerals. Nutrients are added by using fertiliser. You should apply fertiliser every 2-4 weeks depending on what sort of fert you are using. Soil is changed because: organic particles have deteriorated and water cannot drain out or because roots have filled all the spaces in the soil. Both those take 3-6 years. If water runs through your soil it is still good.

I'm trying to see where the leaves are falling off. I can see healthy new leaves just opening and I can see healthy older leaves but no sick or dying leaves so I do not think you have a problem.
Not sure what species that tree is but wondering if this is old leaves reaching end of life. Most evergreen species have leaves that live for 2-4 years then get too old so die and drop. That is natural and usually happens at the start of Summer so could explain what's happening to your tree.

Is your tree deciduous? (did it drop all the leaves for the winter?)

If anyone can ID the species that might give more clues.
 
Given you location and the tree's appearance, this looks to me like a Pistachio tree. Not an uncommon species to be made into bonsai. I may be wrong, but as said, it's definitely NOT a Chinese Elm

 
It's a Schinus terebinthifolius, very similar to pistachio, but with a final apical leave in each complex leaf, Mine looks like this:

JMK_43101-Photoroom2.jpg
Schinus terebinthifolius

I wouldn´t worry about that leaf fall. It's usual. I even make a complete defoliation at this time of the year....
 
My app says Brazilian Pepper Tree. Whether it is that, or a Schinus, like Fidur says, it is definitely NOT a Chinese Elm.
 
that doesn't look like chinese elm to me... unless some very special variety... chinese elms leaves on the edges are not round... serrated I think is the english word to describe it...

having said that the tree you have doesn't seem to have some massive problem... new shoots look good... foliage is all green (based on your photos)... normally water problems would result in at least some foliage to

Time for a new bonsai master! That is definitely NOT a Chinese elm.

We do not change soil because it has run out of minerals. Nutrients are added by using fertiliser. You should apply fertiliser every 2-4 weeks depending on what sort of fert you are using. Soil is changed because: organic particles have deteriorated and water cannot drain out or because roots have filled all the spaces in the soil. Both those take 3-6 years. If water runs through your soil it is still good.

I'm trying to see where the leaves are falling off. I can see healthy new leaves just opening and I can see healthy older leaves but no sick or dying leaves so I do not think you have a problem.
Not sure what species that tree is but wondering if this is old leaves reaching end of life. Most evergreen species have leaves that live for 2-4 years then get too old so die and drop. That is natural and usually happens at the start of Summer so could explain what's happening to your tree.

Is your tree deciduous? (did it drop all the leaves for the winter?)

If anyone can ID the species that might
 
Thank you so much for helping me. Two weeks ago I couldn't see the trunk of the tree because it was full of leaves. I did cleaned up all the fallen leaves and stems from the branches. It now looks naked to me compared to two weeks ago. I do have to say in the few years I owned it it never lost any leaves, so it looks like it might be old leaves that have come to the end of their life. I do add fertiliser once a month. I am attaching the picture of my fertiliser. It just freaked me out becase it's a beautiful tree and I really don't want to loose it. The bonsai master was not really engaged when I showed him my tree, that's why I am reaching out.
 

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Given you location and the tree's appearance, this looks to me like a Pistachio tree. Not an uncommon species to be made into bonsai. I may be wrong, but as said, it's definitely NOT a Chinese Elm

I am in Mission Hills, Los Angeles CA 91345.
 

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Thank you so much for helping me. Two weeks ago I couldn't see the trunk of the tree because it was full of leaves. I did cleaned up all the fallen leaves and stems from the branches. It now looks naked to me compared to two weeks ago. I do have to say in the few years I owned it it never lost any leaves, so it looks like it might be old leaves that have come to the end of their life. I do add fertiliser once a month. I am attaching the picture of my fertiliser. It just freaked me out becase it's a beautiful tree and I really don't want to loose it. The bonsai master was not really engaged when I showed him my tree, that's why I am reaching out.
OK. We now know the species. We know it is evergreen. Biogold fert every month should be adequate.
One of the problems with bonsai is that the branches keep growing. They get longer and longer. The older leaves in the middle die and fall off leaving the centre of the tree bare.
The answer is pruning. Cut long branches shorter. That encourages new shoots to grow from the branches. Hopefully some will emerge further back along those bare branches and you will have inner foliage again.
@Fidur mentioned defoliating. That means all leaves are cut off the tree which forces the tree to grow new leaves which will give you another year of green foliage. If the tree can be defoliated I'm guessing it can also be pruned hard to force back buds.
Hope @Fidur can help with how to manage your pepper tree for the future - regular trimming, hard pruning, defoliation, repotting, etc and appropriate times of year for those activities for LA climate.
 
OK. We now know the species. We know it is evergreen. Biogold fert every month should be adequate.
One of the problems with bonsai is that the branches keep growing. They get longer and longer. The older leaves in the middle die and fall off leaving the centre of the tree bare.
The answer is pruning. Cut long branches shorter. That encourages new shoots to grow from the branches. Hopefully some will emerge further back along those bare branches and you will have inner foliage again.
@Fidur mentioned defoliating. That means all leaves are cut off the tree which forces the tree to grow new leaves which will give you another year of green foliage. If the tree can be defoliated I'm guessing it can also be pruned hard to force back buds.
Hope @Fidur can help with how to manage your pepper tree for the future - regular trimming, hard pruning, defoliation, repotting, etc and appropriate times of year for those activities for LA climate.
I think California has a similar weather to mine, so as Shibui says, prunning is the key action to keep this tree compact. I prune every shot as soon as it has 3 compound leaves, and I do this all year round. It can be fully defoliated if needed and it will grow back. My experiences with this species are written here:

 
OK. We now know the species. We know it is evergreen. Biogold fert every month should be adequate.
One of the problems with bonsai is that the branches keep growing. They get longer and longer. The older leaves in the middle die and fall off leaving the centre of the tree bare.
The answer is pruning. Cut long branches shorter. That encourages new shoots to grow from the branches. Hopefully some will emerge further back along those bare branches and you will have inner foliage again.
@Fidur mentioned defoliating. That means all leaves are cut off the tree which forces the tree to grow new leaves which will give you another year of green foliage. If the tree can be defoliated I'm guessing it can also be pruned hard to force back buds.
Hope @Fidur can help with how to manage your pepper tree for the future - regular trimming, hard pruning, defoliation, repotting, etc and appropriate times of year for those activities for LA climate.

OK. We now know the species. We know it is evergreen. Biogold fert every month should be adequate.
One of the problems with bonsai is that the branches keep growing. They get longer and longer. The older leaves in the middle die and fall off leaving the centre of the tree bare.
The answer is pruning. Cut long branches shorter. That encourages new shoots to grow from the branches. Hopefully some will emerge further back along those bare branches and you will have inner foliage again.
@Fidur mentioned defoliating. That means all leaves are cut off the tree which forces the tree to grow new leaves which will give you another year of green foliage. If the tree can be defoliated I'm guessing it can also be pruned hard to force back buds.
Hope @Fidur can help with how to manage your pepper tree for the future - regular trimming, hard pruning, defoliation, repotting, etc and appropriate times of year for those activities for LA climate.
Thank you so much it all makes sense to me now. I was afraid I was loosing it. I will follow your recommendations. The tree so far is growing lots of new leaves and the mature leaves are now solid.
 
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