Could be. Even a lack of water kills roots and leads to rot. Not as common as over watering though.Could it be poor watering last summer?
Could be. Even a lack of water kills roots and leads to rot. Not as common as over watering though.Could it be poor watering last summer?
Very likely.Perhaps they were too far gone?
Would the wisest course of action be to leave it in it’s nursery pot and try to bring it back to health this year? Or repot it?Could be. Even a lack of water kills roots and leads to rot. Not as common as over watering though.
Identifying the problem and its cause is the first step. It would be best to get an experienced Bonsai person to look at it in person. The pictures are not so clear cut and the tree, roots, soil examination would reveal a lot more. Call up the local Bonsai club and ask for help.Would the wisest course of action be to leave it in it’s nursery pot and try to bring it back to health this year? Or repot it?
Not always true, the perched water effect only occurs if the particle size difference is too great! Creating a drainage layer using the proper particle size variation is very effective. The research has clearly shown the change in " perched effect" given different particle size. This is not a matter of opinion. Depending on the root structure using nothing but larger particle size is often a poor option and ill advised.I must disagree. Put it in a deeper pot and/or use nothing but the larger particle size substrate instead.
A "drainage layer" simply elevates the saturation zone = exactly what one doesn't want in this circumstance.
Identifying the problem and its cause is the first step. It would be best to get an experienced Bonsai person to look at it in person. The pictures are not so clear cut and the tree, roots, soil examination would reveal a lot more. Call up the local Bonsai club and ask for help.
Do you happen to know the difference between yellowing at the tips, and yellowing at the base of the needles?Identifying the problem and its cause is the first step. It would be best to get an experienced Bonsai person to look at it in person. The pictures are not so clear cut and the tree, roots, soil examination would reveal a lot more. Call up the local Bonsai club and ask for help.
First off what the picture shows is not normal. They do turn yellow and shed but not in that manner. The needles appear to show some signs of needlecast but the pictures as I said before are not clear enough.Unfortunately, that's near impossible. I'm in Manhattan, and the closest clubs are far enough away that I would need a car.
I'm hoping it's just natural yellowing. Someone had mentioned that pines tend to do this, and then green back up.
Roots looked good. Lots of old roots with some small, white, newly formed roots growing.
I guess I could try an H2O2 spray to be safe.
Unfortunately, I'm kind of left to just the internet for help figuring this out.
I so badly wish that was an option. It's currently living on my fire escape.... No ground available anywhere.I would de-pot it, stick it in the ground, and leave it alone for a couple of years until it rebounds. If it lives, you'll have to rebuild the root ball from scratch.
Drat.... Pretty much all the needles are slightly yellow at the tips. It could be needle blight, I guess.First off what the picture shows is not normal. They do turn yellow and shed but not in that manner. The needles appear to show some signs of needlecast but the pictures as I said before are not clear enough.
I believe you have posted your concern and pictures in various threads and received several suggestions. Perhaps it is time to pick a course of action. Best of luckDrat.... Pretty much all the needles are slightly yellow at the tips. It could be needle blight, I guess.
Think H2O2 spray would help? ?
I just haven't gotten much in the way of a solid answer :/ I understand this is for lack of clear information, but it makes it quite tough to decide. Some people say buy fungicide, others say use H2O2, and yet others say it's normal yellowing. I really wish I had a bonsai club right about now...I believe you have posted your concern and pictures in various threads and received several suggestions. Perhaps it is time to pick a course of action. Best of luck
Can you give me a reference citation?Not always true, the perched water effect only occurs if the particle size difference is too great! Creating a drainage layer using the proper particle size variation is very effective. The research has clearly shown the change in " perched effect" given different particle size. This is not a matter of opinion. Depending on the root structure using nothing but larger particle size is often a poor option and ill advised.
I recall provide some references when you questioned this previously several months ago. Basically the perched water effect occurs when a less permeable layer is below a more permeable layer. It also occurs due to the effect of water rising due to surface contact between particles. The more surface contact the greater the effect. Container depth also alters the effect. The key for Bonsai purposes is understanding the Physical properties of Container media for Bonsai purposes. The amount of water held varies greatly with the type of media, Organic much more so than inorganic. Smaller particles more so than larger particles. Consistent size of particles give consistent contact patterns. The goal is to attain proper mix of air porosity and water retention.Can you give me a reference citation?
I would like to review the methodology and see the data.
Sorry, Frank. I don't recall asking this before, but I'm getting old and forgetful.I recall provide some references when you questioned this previously several months ago.
EDIT: Oh phooey. I missed the entire 2nd page oopsThanks for all the advice. I’m going to bare root it tomorrow and hope for the best. What do dead/rotted roots look like so I can cut them off.
The only way to know that is to take it out and look. Post a close up pic if you can.Would the wisest course of action be to leave it in it’s nursery pot and try to bring it back to health this year? Or repot it?
I actually wound up repotting it. A shocking number of roots were rotted and just fell away when lightly touched. I went down to a large bonsai pot, leaving the core root ball untouched, but pruning away quite a bit. Fingers crossed!The only way to know that is to take it out and look. Post a close up pic if you can.