Hi Harry, I collected my yamadori in late October. One elm tree and one oak. I used your black bag technic. How long should I keep the black bags before removing them. I live in Canada, Toronto. I leave all my trees outside in the winter. Thank you so much. Your channel really helps, keep doing good job.
Hi Harry, your method is working so well here, that the shoots coming from the sides of the trunk are growing against the bags. Should I remove the bag or let the shoots find their way in the bag-tight area? Thanks again, Walter
Great tip Harry, I have a Birch forest potted last fall 9 out of 11 trees have budded. Can I bag the two no shows? Its still cold in Canada -6 nights to 10 in the day. Your thoughts please. Thanks
Two more questions, Harry... 1: Do I understand correctly that you leave the bag on for two years (summer through winter) and 2: what if the plants are mildew-ish. Can you bag them up then too? Thanks again! Walter
SUPERCARCLASSICS 1) no, keep open, keep the bag and remove by the end of summer. 2) mildew often indicates a stressed tree. More often than not because it has vigour but poor soil. Bagging up won’t Make the mildew worse, but don’t spray the leaves (as this is how mildew spreads)
Great video, thanks! I have a newly collected Utah Juniper. I've been giving it Rhizotonic every 4ish days. Will Utah Junipers benefit from bagging as well? They typically grow in very dry areas around here.
Some advise please: Just before spring I collected some young Scots pine saplings from my neighbours garden. I potted in only sphagnum moss to attempt to encourage root growth. Some are doing well, but two are showing falling needles (all turning yellow including new growth). I think it may be overwatering, but we have had hot days recently. I water every morning with a generous sprinkle. Should I continue this routine? Would pines benefit from this technique too, and is sphagnum moss ok? I’m very new to bonsai, so any advice is good 😅
Thanks for sharing,intresting especially as i have just lifted a yamadori hawthorn from my neighbours garden before he disposed of it. buds had burst ,so assumed all would be ok , but with what you have said i have just blacked bagged and will leave like that until when please ? Regards Nick Walker Yorkshire uk
Nick Walker good find!!! Don’t believe it’s taken until we’ve had the first really hot 25+C temps of the summer. If it makes it through that, you should be ok
Thanks for describing this technic. Is it beter if the bag is totaly opaque, or should it let some light pass? A bit of photosynthesis help the shoots to not rot? Last question, do you use some fungicide, to prevent mold? Sorry for my english! 😉
@@bonsai4me2 I come back to this technic who seems to work very well on some spicies. But this year as last year, I got a lot of fungus problem whith this bags... Humudity with no air circulation is the perdect combo for disease... I ve got problem on prunus and pear... How to deal with humidity sensitive species? I don t found a good preventive treatment for this special conditions of culture... If you got something? Thanks!
Thanks Harry, another very interesting and helpful video. I have a previously layered Hawthorn which is struggling since I repotted a couple of weeks ago. Will black bagging help?
Your videos on this sweating technique are great! My 2 hawthorns are pushing good growth now from last week - one of them is so humid it's got aeriel roots coming out all over the trunk so I'm hoping that means there's something happening under the soil as well. Something got into my greenhouse and ripped up a black bag so I've replaced with a large clear-ish one I had to hand, will that work just as well now buds have started popping? Thanks.
Thank you for sharing, very very useful! I was familiar with the technique, however I keep wondering how long I should keep the tree inside the bag. I collected a field/hedge maple this spring, just before the buds openend. After a week or so the buds opened. How do I proceed? For how long should I keep the tree in de black bin bag? Good to mention, unfortunately I was not able to collect a very good rootball. I also started to use Rhizotonic, as suggested on you website.
Great description of this technique, but I do have a couple questions. I have 2 large boxwood that must be dug from a garden by September. I have already pruned them back a lot but left a lot of foliage on them still. On your website you say that boxwood take repotting better midsummer than spring so does that hold true for lifting them? Also should the soil be left on the roots or should I hose it off and replace it with a mix of pumice, haydite, and pine bark? Finally would you recommend a clear plastic bag for them? Thanks
Hi Harry. Some help would be appreciated. With no polytunnel but willing to use this technique, where would you place a yamadori oak collected one month ago? Shade Outdoor? Bright indoor? Thank you very much
Hi, does the bag has to be black all year round or clear bag do the job too, my yamadori collected on 22en of March under the bark is still green but not bud yet. After watching your video it's now in full sun with a clear bag over it. Thanks for your video.
Thank you for this ! I got an hawthorn and a black thorn collected this end of winter that is struggling. They have leaves but a little dry. Can I had the bag now ? If I do, completely close or open at the top ? They were in tunnel, and seems better now out, what you think ?
I Trying this with a newly collected hawthorn but I am using one of the green recycling bags our council provides. Is this ok. Reason I decided to use this was the article I saw talked about using a very cheap/thin black bag as this would let some light in to stop new growth dying/yellowing whilst still maintaining humidity etc........ intend to bag up a struggling firethorn tommorow after seeing this although I fear I may be too late. Would b grateful for reply on the green bag. Thanks.
Love these videos, im wanting to do the same here, but dont have the use of a poly tunnel, or greenhouse, would it be recommended to do so just in the garden with no cover? thanks.
Can i do this on an olive which was dug up from the garden and had its trunk chopped? It has no leaves on it at all Will using this method help it to leaf?
Have you tried this with Oaks as well? I recently collected an Oak which I might have cut off too much of the root mass since the leaves haven't really started coming out compared to another smaller which I collected at the same time. Do you think this might help? Located in Sweden. I've just now read about collecting oaks on your website which I will try in the future.
I did this with a translucent white bag , spring UK with a Laurel in a pot. It worked well, many new leaves after 4 weeks.
Great.... a great way to care for bonsai to make bonsai flourish.
Hi Harry, I collected my yamadori in late October. One elm tree and one oak. I used your black bag technic. How long should I keep the black bags before removing them. I live in Canada, Toronto. I leave all my trees outside in the winter. Thank you so much. Your channel really helps, keep doing good job.
Great video! I could see this being used to encourage aerial roots on a ficus or similar tropical trees as well.
Brennan Mulligan it really would work well
Thanks for sharing with us Harry. Does this technique work for junipers and pines as well?
Shan Shan use clear plastic bags
Harry Harrington thank u.
Hi Harry, your method is working so well here, that the shoots coming from the sides of the trunk are growing against the bags. Should I remove the bag or let the shoots find their way in the bag-tight area? Thanks again, Walter
Great tip Harry, I have a Birch forest potted last fall 9 out of 11 trees have budded. Can I bag the two no shows? Its still cold in Canada -6 nights to 10 in the day. Your thoughts please. Thanks
Jonathan Aristone of course
nice one ,, thank you for the knowledge bout making bonsai ,, i love bonsai and i have video to hope anyone can watch
Two more questions, Harry... 1: Do I understand correctly that you leave the bag on for two years (summer through winter) and 2: what if the plants are mildew-ish. Can you bag them up then too? Thanks again! Walter
SUPERCARCLASSICS 1) no, keep open, keep the bag and remove by the end of summer. 2) mildew often indicates a stressed tree. More often than not because it has vigour but poor soil. Bagging up won’t Make the mildew worse, but don’t spray the leaves (as this is how mildew spreads)
@@bonsai4me2 thanks so much Harry. My trees will certainly benefit from your advice!
Great video, thanks! I have a newly collected Utah Juniper. I've been giving it Rhizotonic every 4ish days. Will Utah Junipers benefit from bagging as well? They typically grow in very dry areas around here.
Some advise please:
Just before spring I collected some young Scots pine saplings from my neighbours garden. I potted in only sphagnum moss to attempt to encourage root growth. Some are doing well, but two are showing falling needles (all turning yellow including new growth). I think it may be overwatering, but we have had hot days recently. I water every morning with a generous sprinkle. Should I continue this routine? Would pines benefit from this technique too, and is sphagnum moss ok? I’m very new to bonsai, so any advice is good 😅
Robert Urquhart good Q. Pines need more light, along with juniper.
Put them in clear plastic bags ;)
Harry Harrington thank you! Is that the same for other evergreens too? And if so, why?
Hi Harry, great video. My favourite tree is the Hawthorn. When is the right time to bag up trees?
Thanks for sharing,intresting especially as i have just lifted a yamadori hawthorn from my neighbours garden before he disposed of it. buds had burst ,so assumed all would be ok , but with what you have said i have just blacked bagged and will leave like that until when please ? Regards Nick Walker Yorkshire uk
Nick Walker good find!!! Don’t believe it’s taken until we’ve had the first really hot 25+C temps of the summer. If it makes it through that, you should be ok
Thanks for describing this technic.
Is it beter if the bag is totaly opaque, or should it let some light pass? A bit of photosynthesis help the shoots to not rot?
Last question, do you use some fungicide, to prevent mold?
Sorry for my english! 😉
omaley they should be thin plastic to let some light pass.
No, no fungicide. You need fungal growth (mycelium) to help the trees root
@@bonsai4me2
I come back to this technic who seems to work very well on some spicies.
But this year as last year, I got a lot of fungus problem whith this bags...
Humudity with no air circulation is the perdect combo for disease...
I ve got problem on prunus and pear...
How to deal with humidity sensitive species? I don t found a good preventive treatment for this special conditions of culture...
If you got something?
Thanks!
@@omaley7338 The recommendation is to remove the bag for a few minutes each day to allow air circulation and thus avoid problems with fungi.
Thanks Harry, another very interesting and helpful video. I have a previously layered Hawthorn which is struggling since I repotted a couple of weeks ago. Will black bagging help?
murphyorama absolutely
Hi Harry. Would you do this for European hornbeam too?
Ralph Manning definitely Ralph
@@bonsai4me2 Thank you.
Your videos on this sweating technique are great! My 2 hawthorns are pushing good growth now from last week - one of them is so humid it's got aeriel roots coming out all over the trunk so I'm hoping that means there's something happening under the soil as well.
Something got into my greenhouse and ripped up a black bag so I've replaced with a large clear-ish one I had to hand, will that work just as well now buds have started popping? Thanks.
TheCattwooduk that’s fantastic! And yes, the tree pushing aerial roots is as good as it gets! Clear will work now you have new shoots emerging.
@@bonsai4me2 this confuses me a bit. So what is better, carry on with a black bag when new shoots appear, or with a clear bag? Thanks, Walter
Thank you for sharing, very very useful! I was familiar with the technique, however I keep wondering how long I should keep the tree inside the bag. I collected a field/hedge maple this spring, just before the buds openend. After a week or so the buds opened. How do I proceed? For how long should I keep the tree in de black bin bag? Good to mention, unfortunately I was not able to collect a very good rootball. I also started to use Rhizotonic, as suggested on you website.
Peter Storm exactly as I describe in the video
Thanks for sharing. Do you use the black bag technique for your collected olives as well?
Great description of this technique, but I do have a couple questions. I have 2 large boxwood that must be dug from a garden by September. I have already pruned them back a lot but left a lot of foliage on them still. On your website you say that boxwood take repotting better midsummer than spring so does that hold true for lifting them? Also should the soil be left on the roots or should I hose it off and replace it with a mix of pumice, haydite, and pine bark? Finally would you recommend a clear plastic bag for them? Thanks
Hi Harry. Some help would be appreciated. With no polytunnel but willing to use this technique, where would you place a yamadori oak collected one month ago? Shade Outdoor? Bright indoor? Thank you very much
F J A F use light shade, so just a couple of hours direct sunlight in the morning or evening
Hi, does the bag has to be black all year round or clear bag do the job too, my yamadori collected on 22en of March under the bark is still green but not bud yet. After watching your video it's now in full sun with a clear bag over it. Thanks for your video.
Thank you for this ! I got an hawthorn and a black thorn collected this end of winter that is struggling. They have leaves but a little dry. Can I had the bag now ? If I do, completely close or open at the top ? They were in tunnel, and seems better now out, what you think ?
Percevan use now mate, just open the top and let a little light in
Harry another good tip👍When looking at your garden videos did you keep pigeons?
Brian Kavanagh ha! Yes, I haven’t kept pigeons myself but there’s a big pigeon loft on the right hand side of the garden now a workshop
I
Trying this with a newly collected hawthorn but I am using one of the green recycling bags our council provides. Is this ok. Reason I decided to use this was the article I saw talked about using a very cheap/thin black bag as this would let some light in to stop new growth dying/yellowing whilst still maintaining humidity etc........ intend to bag up a struggling firethorn tommorow after seeing this although I fear I may be too late.
Would b grateful for reply on the green bag. Thanks.
David Sweetman I cant see a reason why you can’t use a green bag as long as its thin enough to let a little light through
Love these videos, im wanting to do the same here, but dont have the use of a poly tunnel, or greenhouse, would it be recommended to do so just in the garden with no cover? thanks.
I've been using clear bags because that's what I have handy. Do you see any harm in that?
Boston Bonsai Idiot no harm, but for species that have a tendency to sucker and reject the trunk, you need the black bags
Harry Harrington ah, got it...makes sense, thanks so much.
Hi Harry ! Very interesting, this video ! Have you tried the black bag technic on evergreen trees such as olive trees ? Does it work ?
Can i do this on an olive which was dug up from the garden and had its trunk chopped? It has no leaves on it at all
Will using this method help it to leaf?
Hi Harry, great video! Have you tried it on Ulmus minor?
It would work well
Great! Thank you!
This was absolutely great!!! Will this work for quercus robur too?
Definitely
@@bonsai4me2 thanks Harry! I already blackpacked two hawthorns. Tomorrow the oaks will follow! Great advice!
What's the relative humidity in your area? I tried a similar technique on some root cuttings, but it's so humid here that I got mold overnight.
Mike B the mould will have been mycelium, v beneficial to roots.
Have you tried this with Oaks as well?
I recently collected an Oak which I might have cut off too much of the root mass since the leaves haven't really started coming out compared to another smaller which I collected at the same time. Do you think this might help? Located in Sweden.
I've just now read about collecting oaks on your website which I will try in the future.
awesome
Great advice!
Would this technique work on Scots pine?
richard cope I did my know. But it won’t harm it
whats the best time to collect bonsai material?
Early Spring. Just before buds start to swell.
Beatifuuuulll 👍👍
Is the black bag a garbage bag?
Maan Jezus yes, garbage/bin bags
@@bonsai4me2, thanks for the reply. Just one more question: how does the tree regenerate in the bag without sunlight?