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Sick Japanese Maple diagnosis. Toss or Treat? 

Growing Bonsai by Jelle
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Every Japanese Maples bonsai owner knows this is easily is infected by fungi, leading to death. Is my tree dying? This maple never fully pushed in spring, and it is time to look at all angles. Are we dealing with the feared verticillium wilt? Or is something else happening? Frost damage to the roots? Root rot? How to deal with this situation, and how can one rescue a dying Japanese maple with these symptoms.
Stick around and hear my thoughts on the bonsai myth that root rot is a bonsai cause of death.
0:00 Sick Japanese Maple. Now what: Toss or Cure?
0:23 Katsura variety of Japanese Maple
0:39 Signs of disease in Japanese Maple
1:26 Recognizing signs of Verticillium Wilt infection
2:45 Frost damage on the roots?
4:04 Assessing the damage
4:48 Who is to blame for dead roots?
6:00 Bonsai Myth: Root rot as cause of bonsai death!
6:30 Replanting
8:49 Prune back unhealthy Japanese Maple branches
9:27 How to disinfect bonsai tools?
Included in de video is Image Number 5037027 from Forestry Images, www.forestryim....

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17 авг 2024

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Комментарии : 85   
@BlueSkyBonsai
@BlueSkyBonsai 2 года назад
this was an excellent diagnosis video Jelle with great recommendations! hopefully it will do well in the long run as people search for "how to diagnose maple problems" or "maple leaves drooping" etc. 👍
@GrowingBonsai
@GrowingBonsai 2 года назад
Hi, thank you for that. Maybe I should change the title at some point!
@BlueSkyBonsai
@BlueSkyBonsai 2 года назад
@@GrowingBonsai I've emailed you!
@BlueJayBonsai
@BlueJayBonsai 2 года назад
Paging Dr. Jelle to the Bonsai Emergency room! 🚑 Thanks for sharing your experience and knowledge! 👍
@GrowingBonsai
@GrowingBonsai 2 года назад
Hahaha, well, thank you. How did you know it is Dr Jelle though
@lonestarpatriot876
@lonestarpatriot876 4 месяца назад
9 times out of 10, if there is a problem with Japanese Maples, it is a water problem. They do not like staying wet. If you live in a place where it rains alot, you need to keep them out of the rain. You must have a really good draining soil and check the soil frequently by sticking your finger all the way down in the soil. If you feel any amount of moisture, hold off on watering.
@cdawgg21
@cdawgg21 Месяц назад
Is there a follow up video to show the tree recovery?
@mchlbk
@mchlbk Месяц назад
Very interesting video. My Japanese maples are suffering too right now and unfortunately two of them are dead. I've just left them to grow in the medium they came in and I suspect the extremely wet spring we've had this year may have caused root rot. I really don't like to disturb the roots right now (july), but I see your point - they may die if I don't.
@brentbarajas
@brentbarajas 2 года назад
I literally had this happen to 3 of my japanese maples this year. Same scenario in nursery pots and soil, but they never leafed out and indeed died after I repotted trying to save them. I hope yours pulls through!
@GrowingBonsai
@GrowingBonsai 2 года назад
My hopes are low to be honest :)
@brentbarajas
@brentbarajas 2 года назад
@@GrowingBonsai all we can do is try and hope for the best, but expect the worst.
@GrowingBonsai
@GrowingBonsai 2 года назад
@@brentbarajas indeed. And, of course, buy more trees 🤣
@brentbarajas
@brentbarajas 2 года назад
@@GrowingBonsai my wife disagrees 😂😂😂 I always ask for forgiveness later
@GrowingBonsai
@GrowingBonsai 2 года назад
@@brentbarajas No Comment. 🤨
@Marks_Channel
@Marks_Channel 2 года назад
A very informative film thank you. I have an acer with similar issues and will check the substrate in the morning, what is the substrate that you are using if you don't mind me asking.
@GrowingBonsai
@GrowingBonsai 2 года назад
The base of my substrate is pumice with diatomous earth. Then some bits and pieces mixed in as I re-use & mix substrates :)
@robertpawlsoky2910
@robertpawlsoky2910 Месяц назад
Hi, wonder if you should spray roots after cleanup with Diacon or some similar antifungal compound after cleanup.thaanks for the video.
@fredicodex9830
@fredicodex9830 2 года назад
Thanks for this video. I had same issue with my Aureum. I just hope it will survive as in my country these are not available😢
@GrowingBonsai
@GrowingBonsai 2 года назад
I am afraid this tree is on its way to the compost. It is still alive but even more unhappy. :(
@tammyrivas4442
@tammyrivas4442 Год назад
I hope this helps my little tree. I over watered😟 I am going to try this today. It is still cool here in North West Indiana thank you
@GrowingBonsai
@GrowingBonsai Год назад
Really? What is the weather there like at the moment?
@bonsaikastur
@bonsaikastur 2 года назад
Thanks for being honest about substrate. I've been using potting soil for 30 years and had no problems with it because I almost don't water the plants, I just let the rain do its job
@GrowingBonsai
@GrowingBonsai 2 года назад
Hi Astur, great to see you here. Agreed. People are way to biased about "the right" substrate. In the end, species, position, climate care and substrate need to match and then the proverbial glass marbles will work as substrate. Just had a peek at your channel. Good for me to practice my spanish!
@mokinyss
@mokinyss Месяц назад
Hello! Any updates on this tree? 😊😊
@patrickmartens7166
@patrickmartens7166 Год назад
Hallo Jelle , wat voor substraat gebruik jij voor je acers? Hopenlijk heeft je katsura het gered. Prachtige acers die katsuras!
@judlpd
@judlpd Год назад
Did it survive?
@GrowingBonsai
@GrowingBonsai Год назад
No :(
@christermansson1861
@christermansson1861 Год назад
@@GrowingBonsai : Hi, did you add nutriciants ? Also some soil in the substrat is good when repotting , so it can hold sume humidity, in my experience.
@thenaturecreater8906
@thenaturecreater8906 2 года назад
Thanks great video!
@GrowingBonsai
@GrowingBonsai 2 года назад
Hi Nature Creator, thank you for dropping by! Feel free to browse the channel, there might be anther vid you like!?
@thenaturecreater8906
@thenaturecreater8906 2 года назад
@@GrowingBonsai subscribe 2 weeks ago 👊
@splitjonas
@splitjonas 4 месяца назад
Hi @GrowingBonsai , I have a japanese maple(Atropurpureum) where the apex branch has turned black-ish in the bottom. The tree still looks alive, but has no leaves yet since I am living in Norway and spring starts pretty late here... Have you experienced the same? Any tips? Or should I just wait it out? Shame I cannot share a picture on youtube...
@andrewclark14atgmail
@andrewclark14atgmail 2 года назад
Great video, I just repotted my maple with similar issues to yours I hope it survives. Could you tell me what substrate you're using and at what % ratios for each? Maybe you could even do a video on your substrate, just an idea, thank again
@GrowingBonsai
@GrowingBonsai 2 года назад
Hi Andrew, I will do a video at some point. Good suggestion! For right now: If you check growingbonsai.net you will find a page with my substrate thoughts
@ladyd629
@ladyd629 3 месяца назад
Thank you for your video. Please, how long do I leave the substrate on each time I add water and when I add soil? Thank you
@GrowingBonsai
@GrowingBonsai 3 месяца назад
thx. I am not sure what you are asking!
@BONSAIenCORTO
@BONSAIenCORTO 2 года назад
Great video. Its the only way to solve it or wait til maple ask for water...
@GrowingBonsai
@GrowingBonsai 2 года назад
unfortunately, I did not save it.. :(
@gramatteo
@gramatteo Год назад
Hi Mr Jelle, do u have anymore cuttings from Katsura trees ? I lived in Thailand fyi lol it will be very rare for Katsura here
@GrowingBonsai
@GrowingBonsai Год назад
Unfortunately, I do not :(.
@norawang884
@norawang884 2 года назад
Hi, I have a Japanese maple for years and this spring it was full out with leafs and perfect. Just after few day of heavy rain and windy days the leafs on one side start curling up and fall and spread to the other beaches. I cut the dead branches but don't see the dark stain. I wonder if the tree can be saved or it's dead.
@GrowingBonsai
@GrowingBonsai 2 года назад
No chance this is just a result of wind?
@janetang8684
@janetang8684 Год назад
Thanks for sharing 😍
@GrowingBonsai
@GrowingBonsai Год назад
My pleasure 😊
@zantlozantlom4752
@zantlozantlom4752 2 года назад
Great video! I usually wash the roots when replanting. Why did you not do that with this one?
@GrowingBonsai
@GrowingBonsai 2 года назад
I never wash roots when repotting unless the rootball really is full of dense clay that will not come out any other way. When repotting I minimize stress to the roots. As roots are covered with all sorts of roothairs, but also microbes, I prefer to leave them alone where possible.
@RichardDenRooyen1973
@RichardDenRooyen1973 2 года назад
what would you recommend if the maple is still in the ground with similar issues as you showed in this video? i have 2 maples, in clay ground, who arent healthy as i would be. Thinking about digging them up in early spring and put them in large containers with a better soil. Good plan or??
@GrowingBonsai
@GrowingBonsai 2 года назад
Do you have a history of fungal problems in your yard? That would be my first guess..
@watsup6084
@watsup6084 2 года назад
Hey Yelle - Awesome Video My Maple is dying :(. The leaves curl up and some of the new growth doesnt make it. Its a gift from a club member and its in bonsai soil. I think its Verticillium or some sort of fungus/pest. What would you recommend as treatment this time of the year?
@GrowingBonsai
@GrowingBonsai 2 года назад
Hey .. If it really is verticillium.. There is no true cure that I know off. THere I would consider cutting my losses and tossing it. :( But are you sure it is?
@watsup6084
@watsup6084 2 года назад
@@GrowingBonsai I will inspect a branch to look for what you are showing in the video. The new leaves are deformed and curl up, the young growth barely makes it. I have no clue what it could be and i'm afraid if I mess with the roots at this time of the year it will die.
@RCCRAYZ
@RCCRAYZ Год назад
I have a Sango Kaku that does that every year, branches turn black and die off everywhere. It's very vigorous so it fills in and grows back fast, but I've been wondering why it does that.
@GrowingBonsai
@GrowingBonsai Год назад
Fungal issues come to mind :(
@RCCRAYZ
@RCCRAYZ Год назад
@@GrowingBonsai would neem oil work?
@GrowingBonsai
@GrowingBonsai Год назад
@@RCCRAYZ not sure. I have never used ot. Should it be antifungal?
@cherylandrews3195
@cherylandrews3195 2 года назад
I hope it makes it! I noticed none of the branches had been wired? What substrate/ratio do you use and do you use different substrate for seedlings, developing trees than refined?
@GrowingBonsai
@GrowingBonsai 2 года назад
I am afraid it in the end did not make it :(. I will do a substrate video in winter. I use the same for all!
@1938vw
@1938vw 2 года назад
@@GrowingBonsai please do!
@Acerdorer
@Acerdorer 2 года назад
Thanks for your video! This also happened to me for the 3rd time now, recently with my acer shirasawanum Mr.Sun. Meanwhile I also believe that it is/was only my fault because of too much watering although drainage was good. How often would you water potted trees outside during winter when they don't get any water from rain?
@GrowingBonsai
@GrowingBonsai 2 года назад
Sorry to hear this :( To be honest.. Never. But.. I live in a place in the world where somewhere mid-october till march normally it rains every other day and it is a relief when it is dry for a few days!
@Acerdorer
@Acerdorer 2 года назад
Thanks for the quick answer! Never...well, this is indeed considerably less than I expected but it also makes sense somehow. No leaves, no activity, almost no evaporation.
@GrowingBonsai
@GrowingBonsai 2 года назад
@@Acerdorer That, but also, here everything is moist all the time for most of winter. It is important to realize that local climatic conditions are very important! In general, water when the tree needs it. So when the soil is at risk of drying out. In summer that might be twice a day. And in winter, none for weeks on end..
@lukeb709
@lukeb709 Год назад
What is that you used in the pot just stones ??
@GrowingBonsai
@GrowingBonsai Год назад
have you seen ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-i1zof0uTyW0.html
@garyjohnson2989
@garyjohnson2989 11 месяцев назад
So when to report if spring is not ideal time?
@GrowingBonsai
@GrowingBonsai 9 месяцев назад
I typically aim to repot just as the buds are starting to open
@garyjohnson2989
@garyjohnson2989 9 месяцев назад
@@GrowingBonsaiat that time I'm suppose reduce the root mass too, right?
@GrowingBonsai
@GrowingBonsai 9 месяцев назад
exactly @@garyjohnson2989
@fortyoddyears5295
@fortyoddyears5295 11 месяцев назад
So was that substrate mostly pebble?
@GrowingBonsai
@GrowingBonsai 9 месяцев назад
ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-i1zof0uTyW0.html
@gallerycarnell4974
@gallerycarnell4974 2 года назад
what is substrate?
@GrowingBonsai
@GrowingBonsai 2 года назад
Hi Gallery, the substrate I predominantly use is a mix of baked diatomous earth, expanded shale, pumice and pinebark.
@Inncognito170180
@Inncognito170180 Год назад
@@GrowingBonsai what is diatomaceous earth good for?
@mandrei99
@mandrei99 2 года назад
So? Did it survive?
@GrowingBonsai
@GrowingBonsai 2 года назад
I was lucky and got to go shopping for trees!
@adamdcone
@adamdcone 2 года назад
“Substrate” Drink
@GrowingBonsai
@GrowingBonsai 2 года назад
What do you mean to say ?:)
@abydosianchulac2
@abydosianchulac2 Год назад
@@GrowingBonsai I think they were playing a drinking game and taking a shot/sip whenever you said "substrate."
@Christiankenneth-go8bp
@Christiankenneth-go8bp Год назад
CDC's😂
@GrowingBonsai
@GrowingBonsai Год назад
What do you mean with this?
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