Paperbark maple

[Dave E]

cool-hopefully i'll have some results
i've been on the lookout for one for a while,decided to start some seeds while i waited

 

[Giga]

man I was worried about this guy but he's finally putting out growth! Thought I took a pic of the whole thing but guess I didn't

 

[CWTurner]

So the leaves are almost all off of my Griseum now, so it was time to check the air layers. Not a single root in any of the 5. Some callousing was the best I could see.
It's a shame cause I have a lot of pruning to do and I hate to waste the material. Just one of those species I guess.
CW

 

[Dav4]

So the leaves are almost all off of my Griseum now, so it was time to check the air layers. Not a single root in any of the 5. Some callousing was the best I could see.
It's a shame cause I have a lot of pruning to do and I hate to waste the material. Just one of those species I guess.
CW

They have a rep of being extremely hard to propagate using seed or cuttings, though I would have thought layering would have yielded better results.

 

[coh]

So the leaves are almost all off of my Griseum now, so it was time to check the air layers. Not a single root in any of the 5. Some callousing was the best I could see.
It's a shame cause I have a lot of pruning to do and I hate to waste the material. Just one of those species I guess.
CW

Unless you have to prune it now for some reason, just leave the layer alone until next year...try re-cutting in the spring to make sure you've eliminated all the cambium, and re-wrap it. I've had a number of trees that refused to produce roots the first season, but many seem to "give in" and throw at least a few roots the second year.

 

[CWTurner]

Unless you have to prune it now for some reason, just leave the layer alone until next year...try re-cutting in the spring to make sure you've eliminated all the cambium, and re-wrap it. I've had a number of trees that refused to produce roots the first season, but many seem to "give in" and throw at least a few roots the second year.

This was the second year for the attempted air layer. I did not recut this year if I remember, so maybe that would have helped.
CW

 

[0soyoung]

This was the second year for the attempted air layer. I did not recut this year if I remember, so maybe that would have helped.

Next spring, cut off the lower part of the callus (the cambium is right under the surface) and apply some rooting hormone to give it a kick start. Given the difficulty you've had so far, I would go for 3.0% IBA powder that you can get on-line directly from Hormex (Hormex #30). It may turn your foliage reddish, but it ought to get roots started.

 

[CWTurner]

Next spring........

Too late, I removed the air layers on this. I may try again with different approach.
CW

 

[Pugs]

A few days ago I remembered that the city had planted a Paperbark maple as a street tree in West Salem Oregon. Six years ago it had seeds on it. So a few days ago I went back to that street to check it out. Turns out that the city had planted 15 of them as street trees over several blocks. Some where doing much better than others. Some had lots of seed, some had very little or none. Walking 5 blocks of them, looking for volunteer seedlings I found 1. About an inch or so tall. Managed to pull it up and have it potted here at my home. I'll check back mid November to check for leaf drop and harvest as much seed as I can. I bought one tree last month from Dancing Oaks here in Oregon, but I'd like more of them.

There is a wholesale nursery here in Salem that sells them, but I'm not a retail nursery, although it would be pretty easy to meet the $750 minimum order. I just wouldn't have the space for all those plants.

Side note, I was advised to revive old threads, which is why I hijacked this one. Mea culpa if I am wrong in doing this.

 

[BrightsideB]

A few days ago I remembered that the city had planted a Paperbark maple as a street tree in West Salem Oregon. Six years ago it had seeds on it. So a few days ago I went back to that street to check it out. Turns out that the city had planted 15 of them as street trees over several blocks. Some where doing much better than others. Some had lots of seed, some had very little or none. Walking 5 blocks of them, looking for volunteer seedlings I found 1. About an inch or so tall. Managed to pull it up and have it potted here at my home. I'll check back mid November to check for leaf drop and harvest as much seed as I can. I bought one tree last month from Dancing Oaks here in Oregon, but I'd like more of them.

There is a wholesale nursery here in Salem that sells them, but I'm not a retail nursery, although it would be pretty easy to meet the $750 minimum order. I just wouldn't have the space for all those plants.

Side note, I was advised to revive old threads, which is why I hijacked this one. Mea culpa if I am wrong in doing this.

Sounds like you’d do better reaching out to people if you started your own thread. A lot of people start threads with regular generic bonsai questions and that is where adding to a already existing thread is helpful.