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OK, I have read the appropriate posts and directions for my Chinese Elm that is shedding leaves and looks like it is on it's way out. I have had it for 2 months and it looked good for about a month.

I don't think I am over/underwatering it. It was on the north side of the house in a bright room which would get direct sun on the longer days (morning & evening). I have moved it to the south side of the house in a window where it will get the most sun it can get in the house. In the first month the tree shot off two new branches, one with 4-6 leaves now and one with 8-10.

Now I am going to try outside but I am concerned. The instructions say full sun, does that mean literality 100% all day? I am in Colorado and it can get windy at my location. I have a place where I can place it outside that is partially protected from the wind and it will get 5-6 hours during the summer. The leaves seem fragile and I am worried that one good wind storm or a hard rain will trash the plant.

The south facing window might work if I bring it in during the winter? The guidelines say that the tree will survive outside in the winter, but I am skeptical.

Kind of looking for guidance here on the guidelines for this specific plant. Everyone is saying that these are good starter plants and are resilient and tough.

Of course they recommend fertilizer, liquid and solid. Anyone have suggestions? I would just default to Home Depot & Miracle Grow or buying something from this store? To many choices to pick from as a novice.

Please advise. The tree was a gift from my wife and I do not want to lose it.

An elm is a tree. It needs to be outside. Bringing it indoors should only be temporary--at most three days. A tree doesn't tolerate dry air. It needs some wind and humidity.

Colorado is zone 5 right? That might be a little too cold for ulmus in winter.

I have my ulmus overwintering in unheated greenhouse in sweden. Last winter coldest night got down to -16 outside and -12 in the greenhouse. When you got that low temperature it is important to protect the tree. Ideally you should avoid sub -10 temperatures.

Protection can be unheated shed, cold frame greenhouse. But also snow is very good protection. Put the tree on the ground and add 50cm snow on it.

Never put an ulmus inside in winter. For good health they need the dormancy.

Colorado is a big place, going from plains at 3000 feet/1000 meters to places like Copper at 11,000 feet/3500 meters. Weather can be pretty harsh to most of us.

The tree needs sunlight wherever you are, but winters might be a problem if you are in one of the colder areas. If you are in Denver there should be a bonsai group that can help.

In the meantime it is as warm now for a couple of months so put it outside in the sun and research winter care at your altitude.

Yes, Zone 5b. I moved the elm outside this morning, it should get 4-6 hours of direct sun during the day.

What is the light situation in Sweden over the winter months? I get the dormant state for trees/plants, but I don't have a greenhouse.

I have two options:

Leave the elm outside, I could move it under the deck to partially protect from the elements but the sunlight would also drop. My back yard faces north. Or just leave it where it is, during the winter the spot that it is in will get direct sunlight in the winter.

I could also move it into the basement, it won't get direct sunlight but there are plenty of windows. The basement is unfinished but, heated/insulated.

Thanks for input.

I have made a mistake then. The elm has been inside for a month and a-half. I moved it outside this morning. All the reading says that the elm are tough & resilient.

Is that your experience? That they can take a few mistakes and come back?

We have Chinese Elms here that grow in the landscape, I don't think they are indigenous to Colorado. To be honest, they are considered weed trees here, tough to get rid of and bad for residential area because of the raining sap the leaves produce, that will jack up a cars paint job quick.

My chinese elm ( www.bonsaiempire.com/forum/progressions/...ught-an-ulmus-bonsai ) stays outside, yearround. They can stand solid frost for some time. I had mine in an open-air shed when a cold spell dropped to continuous below-10C for ? over a week? last winter.

It is now clear: No damage to the tree.

As such, I do not have the challenges you have. 5b gets significantly colder though. I am not sure I would risk it with the species. But asking the denver bonsai society might be worth a short.

Arkaik wrote: Yes, Zone 5b. I moved the elm outside this morning, it should get 4-6 hours of direct sun during the day.

What is the light situation in Sweden over the winter months? I get the dormant state for trees/plants, but I don't have a greenhouse.

I have two options:

Leave the elm outside, I could move it under the deck to partially protect from the elements but the sunlight would also drop. My back yard faces north. Or just leave it where it is, during the winter the spot that it is in will get direct sunlight in the winter.

I could also move it into the basement, it won't get direct sunlight but there are plenty of windows. The basement is unfinished but, heated/insulated.

Where I am in Western sweden, we dont get much sun in november and december. Days are short and mostly cloudy. But it does not matter for the trees, when they are dormant they dont need sun. In january and february we have equally short days, but not that cloudy. In order to stop the trees from waiking up too early the greenhouse is shaded with tarps.

I think the option under the deck is the best for you. But askungen people with experience of growing bonsai locally will give you the best answer.

I moved the elm out side and it is getting regular water and much more sun. I looks like it is coming back, leaves are returning to where they fell off and a small amount of new growth.

Thanks for the advice.

Next test will be the winter. We have several months left before the season turns.