Japanese Maples: Root Rot - Prevent Diagnose Cure!
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- เผยแพร่เมื่อ 26 ก.ย. 2024
- Japanese Maples: Root Rot - Prevent Diagnose Cure!
In this video I will show you how to stop your Japanese maples having rotting roots, diagnose this problem and reverse the damage! A step by step guide that also includes an update from a tree I repotted last year.
Ideal for beginners or more experienced Japanese Maple growers, in these videos I will show what practical steps I take to keep my Acer trees healthy during a year of gardening!
I hope you will follow me in my adventures with these wonderful trees
This video will help you grow better trees and for those with more experience, who want to improve the autumn colour, health and general quality of their Maples. Colour can also be improved all year by giving trees the right amount of sun.
If you would like to support the channel and get help too: patreon.com/JapaneseMaples
This video is about:
Fall colors, Japanese acer, Japanese acer care, Japanese acer in pots, Japanese acer leaves curling, Japanese acer maple tree, Japanese acer scorched leaves, Japanese acer tree, Japanese acer uk, Japanese maple, Japanese maples care, Japanese maples in containers, Japanese maples in pots, Japanese maples varieties, Maples, acer, autumn, fall colors, fall foliage, garden, garden answer, garden tour, gardening, maple, shrubs, Japanese maple care, autumn ambience
I have tended to over-pot my new maples, and they really have been soggy and heavy. I've decided to remedy this not by down-potting, but by re-potting into a really well-draining soil: 3 parts pine bark, 1 part perlite, 1 part peat moss. Even when freshly watered they are now so much lighter and the water drains through quite readily. I'm optimistic I'll see some good summer rebound on those that have been sluggish to this point.
Hi and yes using a mix like that is a perfectly valid solution. That type of mixture it’s basically what the Acer growers use and works well. The issue is however is they dry out super fast and will need / waste a lot more water. Most growers use poly tunnels that prevent wind and direct sun reaching the trees so I think there is always a balance. I’ll have a video out soon on compost and watering strategies. Thanks for posting, Carl
SUPER GREAT VIDEO 😊
APPRECIATE ALL YOUR KNOWLEDGE & HELPFUL INFORMATION 🙏
THANKS SO MUCH !!
I was so SURPRISED how small a pot U even have your LARGE MAPLES 🍁 R in 😮
I've learned that they MUST B potted in smaller pots in the beginning to help encourage football growth VS top growth which U SHARED is opposite on what some places sell & we THINK R great cultivars ...without knowing WHY 😮
REALLY APPRECIATE YOUR TIME ❤
Very kind of you to show your appreciation! Carl
awesome tips. spring is when root happens for me due to rain. so I switched to fabric pots and I have not lost any lately
You’re absolutely right, spring is a dangerous time! Carl
@@Japanesemaples What's your opinion on fabric pot vs terracotta? May be a video about it😄
@@awpchung nice idea, I only talk from personal experience however, so I will have to look into it!
Thanks for the video, I just repotted 2 of my Japanese maples in smaller pots
Great 👍 a nice full root ball is really beneficial and they have the rest of the summer to grow 👍
Thank you very much for all the explanations and advices, now with a bit of luck II try to save my Japanese Maples that I have had for more than 15 years but all the sudden this year her leaves have gone yellow and does look very happy at all!
@@dariushKabir19 best of luck 🤞
Wow ! Great video buddy, I have this problem with one of mind, I've potted it on to a far to bigger pot.
I've down sized. But I think I will down size smaller too now, after watching this.
Yes we may lose one tree but if we investigate the problem we may have others .
I like your positive approach 👍
Some great advice Carl Thanks
Glad you enjoyed it! Carl
Little Princess really hates wet roots! Lost two of them this last winter/spring due to root rot after the six months of continuous rain down here in Cornwall! Bought a small Poly tunnel which will be housing my trees from now on so I can control watering!
Good solution!
Thanks Carl! Yes, the damn moisture issue. For me in Hamburg it is pretty much the same and I always have to force me to water less and to weigh the pots before. In the future I will also add clay granulate or lava mulch to my soil to get more air inside the root system.
Sounds like a plan!
I wish I've seen this video a few hours ago...I had received three plants today (beni maiko/katsura/phoenix) and repoted them in bigger pots..I thought that I was helping them..
I actually brought it forward in the month because a lot of people are having problems. The Katsura will probably be fine as it’s fairly robust and fast growing. Keep a close eye on the others. Carl
Really like your channel, very informative and showing what the reality is of it all, the good the bad and the ugly sort of speak.
I'm a new maple addict and your video's have been really helpfull :)
I live in the Netherlands so you know rain is always around the corner here, how long would you say soil could stay wet before I should start to worry?
It’s hard to say, but it needs to get dry on a regular basis. The faster growing trees with bigger leaves to soak up water will do better 👍
@@Japanesemaples Makes sense, it's my first year of really getting into it so it's gonna be a game of trail and error. I got an Atropurpureum last year which is popping off this year so far. Now I went a bit crazy last 2 months by buying 10 more JMs lol
@@XraycatNLI know they are so addictive lol
THANKS AGAIN CARL from WASHINGTON STATE USA 😊
WE have LOTS of RAIN here too 😮
Your TIPS R EXCELLENT !!!
This is definitely a problem for me living in uk like yourself… I’ve lost about 4 or 5 smaller trees this year in a very small time frame… the main reason for this is simply the rain we are having, I’d say I could have got away with not even watering my plants at all this last couple of months just to keep the soil at a nice moisture level…
Thinking about this now, if cover isn’t an option for the plants, planting in the ground or using some kind of moisture sucking substrate in the soil might be a good option
Totally agree it’s been a really wet spring, the trees leaf out giving up their hibernation state to find very poor conditions. I’ve only watered mine twice this year!
Thanks for the video. May have prevented death to half my JM 2nd year trees!
That’s good to hear and encourages me to keep going, 🙏
My Shaina was thriving early Spring, but has now lost all its leaves ☹️ any ideas?
Is the compost really wet?
@@Japanesemaples opposite, my moisture monitor is reading dry / some moist but mostly dry ☹️
@@jdan5793 I spoke to a maple grower in Dorset in the Uk and he won’t stock Shaina any more. Sadly it’s just really temperamental, mine has some random dieback but every other acer I own is fine!
@@Japanesemaples thank you! That's really interesting actually. I'm based in Scotland- do you recommend any acer varieties for a novice like me (obviously not shaina lol)😆😆
So I had planted quite a few JMs in the ground in my backyard. I noticed that quite a few (6 or 7) have died..we’ve had a lot of rain and a few times, my yard was flooded for one day especially in the area where my JMs died. I have a deep suspicion that there is a phytophtora contamination. For now, I’ve stopped planting anymore JMs there..put some fungicide..and planted more water-tolerant trees (like crape myrtles).
I don’t think you need look further than all the water to be honest, they just hate wet feet! Could always try some in pots 🤔
My acre is 4 years old and has been healthy until this year. It’s planted in the ground and obviously suffering from root rot due to wet early season … I live in Scotland. As it’s in the ground, is there anything I can do or is it a lost cause.
I think you have two options. The weather is getting drier so leave be and fingers crossed 🤞
Dig it up and put in pot the size of the root ball. 👍
My new 5g Tattoo didn’t survive. Lost all its leaves and the limbs went black. I cut off what I could, and still have the tree. Hope is still free!! I’m very saddened as it was a pretty tree.
Always sad when a tree dies… I hope this video helps people 🤞
@@Japanesemaples there is a huge learning curve ….. I won’t buy an in leaf tree when my zone hasn’t warmed enough. I can only surmise the shock (even though I moved to my garage), then the constant rain was too much for it to fend off. I’m thinking maybe the best time to buy is when the seller/buyer is out-of-season so the tree can wake up at its new home. 🤷♂️
@@1ronhall I think May is about optimal for me as the conditions in the Uk are more stable. If they are reliant on me watering I have control 👍
I have a one year old orangeola and it has dropped most of it's leaves and the tips of each branch seems to be dying. I cant find any information about what this might be. Do you have any ideas? Its potted, not in the ground. I'm thinking of repotting it.
Oh! It looks like your trompenburg except I've lost more leaves, but the way the ends of the branches look is the same! I hadn't gotten that far in the video yet.
How often do you water and how big is the current pot?
@Japanesemaples I was watering it everyday because it's been so hot here. I live in the Southern part of the U.S. and it was in a 10 inch ceramic pot. I repotted it this afternoon into a small pot like you showed. It was very wet. I'm going to buy a moisture meter tomorrow.
@@melamorales good move 👍 remember your watering a tree not the pot so less leaves means less water 🤔
@Japanesemaples Thank you for answering! I hadn't thought about that! Hopefully it survives. This is my first foray into Japanese Maple territory. It did well last year after I bought it and repotted it and survived the winter like a champ only for me to unintentionally almost kill it this summer!
Not tempted to put the Tamukeyama with root problems in sphagnum moss instead of soil?
Never tried to be honest!
@@Japanesemaples Do it! Lots of moss around the trunk roots (sphagnum moss is anti- bacterial) to hold moisture and encourage root growth. Then pack in surrounding area with non-clumping fire baked cat litter (Any non-wood, non-paper, non-clumping and most importantly...not used. Or Oil sorb will also be good to use). Firm down, making sure of no air pockets. Drench well.
No moisture meter? Try this: shove a wooden BBQ stake into the cat litter, leave for 5 mins. Remove stake, if its wet don't water. If it's dry/nearly dry drench with water. Water should flow out of the bottom of the pot.
With this method it is difficult/nearly impossible to overwater your trees.
Another method is to grow your new treelings in garden pond plastic baskets (the type used for growing submersed water plants) filled with said cat litter. You will need to water more frequently BUT the pay-off is lots of air accessing the roots, absolutely vital for promoting vibrant, healthy root growth - therefore more tree growth.
When watering this free draining medium it is very important that you drench the medium until it flows (not dribbles) from the bottom of the pot. Wait 5 minutes then repeat. This will ensure all of the growing medium is receiving its required amount of water.
I know cat litter sounds crazy, it took me 5 years before I changed to this. I have over 50 bonsai/bonsai in training and whenever I repot it is always into a 100% cat litter or a 70% cat litter, 30% well composted small size pine bark for Pines or moisture loving trees.
I started growing bonsai in 1990 and have a 20 year old Japanese Maple orange dream, 2 foot tall, trunk at base is about 1 3/4 inches diameter, canopy spread of about 2 foot 6 - 9 inches. I bought this at Asda's (Supermarket) spring cheap plants for the grand sum of £3.00 (about $2.75) the more expensive ones were £6.00 (about $5.50-ish).
For the last 15 years I have grown this very healthy tree in 100% cat litter.
I'd say that was a pretty good return, a few quid and 17 years (I estimate the tree was about 3 years old at time of purchase).
Give it a try, after all, what have you got to lose except a dying tree?
And if at first you don't succeed... stop sucking seeds and buy another tree ; )
Best wishes, Franklin.
Wow! Having watched this video I now realize the number of mistakes I've made and I'm surprised that any of my maples have survived, but they have. I really have been over-watering. I'm going to buy a moisture meter right now!. Thank you for your advice. By the way, I recently purchased a Beni Maiko from an online nursery, and when it arrived it had powdery mildew. I experimented by mixing one part of the water from a bag of mozzarella to six parts water and spraying the plant daily to kill off the mildew. After five days the mildew is slowly disappearing. It must be the dilute lactic acid being unfavorable to the powdery mildew. So far so good.
Glad you found it useful! Interesting remedy you have discovered!
How can you tell if a maple died and wont be coming back? Asking for a friend 😂
Hi, If it’s not produced leaves this year by now, it would be dead. Is that what’s happened?
@@Japanesemaples uhhh kinda? I bought it from a nursery in March, it’s very small Shaina about 2 feet tall, very tiny root system and it almost fell over in its pot, so I staked it up. It dropped all its leafs after arriving to me and 3 months later it’s still bare. I expect it will come back eventually? 😅
@@Majorjabronireally sorry but non of mine have ever recovered after that duration. Worth mentioning that some Acer suppliers won’t stock Shaina, because it’s not very reliable.
@@Japanesemaplesas a newbie thank you so much for the insight!!! That would have been good to know when ordering (in the US) 😂 I also bought ryusen, tamukeyama and Waterfall. They have been perfect and growing, but Ms Shaina just gave up 😅 Is there a video on cultivars for noobs? 😂
@@Majorjabronidon’t let Shaina put you off it’s the only one I know that behaves that way. If you check out my channel there are loads of videos on various cultivars. I’m going to do a video soon, something like “my first 10 acres” which might help