What would you do with these Japanese Maple cuttings?

[Shibui]

Doyou have such low rooting percentage in general with AP, or is this particular variety hard to root? Most AP cuttings I get 90+% rooting?

I've certainly had very low rates of rooting with all Japanese maple cuttings. And then most of those that do root, slowly die off after potting on. I don't even bother taking cuttings of JM now. Seeds much more reliable and just as quick though I obviously cannot propagate named cultivars from seed.

 

[The Barber]

I bypassed winter dormancy on all of my Kingsville boxwood cuttings and acorns that I collected last year and they've all done fine this year. I'm in the boat of experimenting and splitting them up between indoor and outdoors.

How do you keep the pumice fines from funneling out the bottom? A screen?

 

[Bonsai Nut]

Doyou have such low rooting percentage in general with AP, or is this particular variety hard to root? Most AP cuttings I get 90+% rooting?

I have almost no experience with JM cuttings, so I can't say if it is due to the season, or the method, or the cultivar. I was surprised simply because I didn't think I would get any success since I started in September. My understanding (from what I have read here on this site) is that some cultivars are relatively easy to root, others less so. These were "relatively" large cuttings, since people have been talking about using this bottle method for larger hardwood cuttings.

 

[MalsRFun in TN]

I have almost no experience with JM cuttings, so I can't say if it is due to the season, or the method, or the cultivar. I was surprised simply because I didn't think I would get any success since I started in September. My understanding (from what I have read here on this site) is that some cultivars are relatively easy to root, others less so. These were "relatively" large cuttings, since people have been talking about using this bottle method for larger hardwood cuttings.

I was one of the bottle and bin experimenters in the other threads, although I used the larger bottles for some larger cuttings and small cuttings in pots all in an enclosed bin that was clear. My results were quick success with large OG Japanese maple cutting, one out of four success with Shishigashira Japanese Maple large cuttings, and probably 80% success with about 60 small cuttings of Kashima Japanese maple grouped in 4 plastic pots. The OG JM was in all pumice, the rest were in 50/50 coconut choir and perlite. I used coffee filters to plug the holes in the large bottles.

For me the bottle method seemed less successful on large cuttings than air layering with plastic balls, which was 100% successful on on 5 trees. My small cuttings in pots in other clear plastic bins that were kept in total shade all molded - the successful box had about an hour of sun around noon every day with a solid color cover.

I wonder if more of your cuttings would have rooted given another month. My successful cuttings stayed in their closed box with weekly misting and monthly fungal spray for 12 weeks before roots appeared.