You have a seedling. The truth is It is not anywhere near being a bonsai and won’t be for a very long time. If you’re really serious about making it j in to a bonsai plant it in the ground and wait five to ten years for the trunk to thicken enough to work with
Keep it inside and it will die. It doesn’t need repotting and won’t for five or six years. If you put it outside now and leave it there that might happen. It won’t if you keep it inside. You’re already seeing the first signs the tree is not in the greatest of health
FWIW the pots you have are...
Best way to inform yourself is to get out and look at good and great bonsai pots. Bonsai Shows museums etc. also a trip to an Asian art museum can help if that museum has displays of ceramics. Good and great bonsai potters use ancient pottery for examples of glazes and shapes.
If you have a...
The conditions you’ve describe are what are in the aphis quarantine requirements and the protocol for importing bonsai into the U.S. I’ve listed all that above.
Cultivation in a contolled environment for three years. That period in a controlled environment is the quarantine period. That...
I’ve heard this more than once about this species. Good advice to let it alone for a couple of years AT LEAST. Five would be better. Can be unpredictable with recovery. The First flush of new foliage is NOT an indicator the plant has surviveD
FWIW deadwood carving has a TREMENDOUS impact on...
Zelkova leaves tend to be larger longer and more lance shaped. Tiny ovalish leaves are usually Chinese elm
FWIW you aren’t very likely to run into an actual zelkova outside of a specialty nursery or more advance bonsai show vendor area. In other words odds are if you find a bonsai marked...
If you’re importing to the U.S. it can take up to threes years of quarantine either in the country of origin or in USDA approved sites inthe us
Here’s a noted bonsai professional Adam Jones in Japan on the issue:
“Tree House Bonsai works closely with the USDA office in Tokyo to ensure our...
No. Small greenhouses are notorious for “heat gain” in winter. Greenhouses trap heat pretty effectively turning a 32 degree day into a 70 degree one. That drives trees out of dormancy and early bud break in mid winter. That means you can’t keep the tree in the mini greenhouse without adding a...
You do NOT want to bury the pot in the ground. It's unnecessary and can harm your tree. When you dig a hole in the ground, putting the pot below soil level, you have basically created a bowl that will fill with water when it rains. That will rot and kill roots in the submerged pot.
Simply...
Get rid of the humidity tray. It's useless and a potential problem.
Second find a sheltered spot in your yard with a garden bed. Next month, after a few frosts put a brick or two on the surface of the mulched garden bed, place the pot (it should be as level as possible) on the bricks insuring...
Whoever told your has no idea what they’re doing. It will NOT be fine inside simply because someone kept it in a greenhouse. It is a temperate zone species. Greenhouse cultivation doesn’t change genetics. It requires a dormancy period or it will eventually decline in health and die.
That’s been the story for a long time. Many many instances of this species being attempted but they don’t pan out well. Doesn’t like root disturbance
You may have a leg up here was yours is already containerized but down the road it will need root pruning etc
Any non-UV resistant plastic left out in direct sun will deteriorate quickly. Stabilized plastic (HDPE), metal etc will work. I use buckets like this but keep them inside to avoid weather extremes (seasonal freeze/thaw and humidity -which can affect the soil regardless of container)
The short answer is no.
The longer answer-The problem with growing larch above zone 7 is not the lack of cold really (although it’s a factor). It is the nights in summer that don’t drop below 70 f (21 C) larch are native to areas that have colder nighttime temperatures averages. With night...
STOP SCRAPING BARK. The tree is dormant for the winter. Just like the trees in the landscape around you
Do a search on “overwintering elms” here. You need to do it soon
Wouldn’t bother treating it with anything. The wood on forsythia is extremely soft and treating it won’t add much. Clean the hollow out as much as possible keep the tree growing to help close the wound
Your location is important. If it’s autumn where you live and this tree has been kept outside before you got it it’s likely it has dropped its leaves in preparation for dormancy.