Just purchased Japanese maples, when to repot?
takeaphoto
15 years ago
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botann
15 years agolast modified: 9 years agotapla (mid-Michigan, USDA z5b-6a)
15 years agolast modified: 9 years agoRelated Discussions
japanese maple... bad repotting
Comments (5)Hi - I made a big typo - I said NOT in a shady place, when I meant just the opposite! Don't put it in full sun. As far as repotting, wait and see if it survives and does well. Now that you know the problem, and now that winter's coming anyway (never water once soil freezes, but do allow it to get snowed on) you can be extra careful - a leafless tree uses very little water anyway - and the black ones should be discarded/burnt), and maybe wait til March....See MoreTiming/Soil Temperatures for Full Repot of Japanese Maples
Comments (18)Blake, as someone who lives in your area and grows a lot of maples in containers, maybe my experience will be helpful to you. Late winter/early spring weather in the Puget Sound area can be very unpredictable - mild and balmy one day with freezing temps and snow the next. That said, I repot maples pretty much year round......it just depends on the reasons and when I've purchased them. A routine maintenance repotting (and one that may involve root pruning) I generally reserve for just before bud break, although I've done it in late fall as well. Hard to say exactly when that may be, as it seems to vary both with weather and the tree in question. After examining the repotting candidates for this year recently, I'd guess I'd start this process in about 2-3 weeks or mid to late March - the buds on my trees are looking very good and healthy and starting to show signs of coming to life. These also tend to be some of my larger maples, so working with the plant while it is still pretty much dormant is both easier on me and on the tree. But it is quite possible to repot JM's succcessfully when in leaf as long as they are small enough to handle easily and you can provide some additional specialized care to get them over the transplant hurdle. I also don't pay too much attention to soil temps at this time -- that doesn't seem to have too much bearing on container soils, as they don't hold the moisture as avidly as Puget Sound inground soils do and they do tend to warm sooner as well. FWIW, I wouldn't necessarily consider planting a new JM in the ground at this time of year as the soil is simply too wet, in fact it's too wet to plant much of anything and you can damage the soil if you attempt to work it in this condition. I also don't provide any special winter attention unless it is a very small plant - 2G or less. Mine are out there year round and have gone through some seriously cold temps without any problems. They are in pretty good sized pots, however - repotting is a lot of work and I tend to use larger containers (15G at least) just because they seem to fit the scale of the plant better and don't require repotting attention quite so often. I addition to the excellent and helpful information you find here, you might want to visit the Maples forum too. There are a number of us that grow JM's in containers that post there regularly and lots of good info about growing these trees, both in containers and in ground....See MoreRepot young Japanese Maples
Comments (15)Holly, no problem on the thread hijack... we're all working toward the same goal here :) Now that I've gone back and read every message in Al's "Trees in Containers" threads, I realize I probably should have posted there in the first place. Blake, thanks for all your help. I appreciate the advice, and what you've suggested seems to be consistent with everything else I've read. That being said, I'm in a better position than Holly to experiment, give that I have 6 (soon to be 9) trees to nurture (or torture). Like Holly, I received these recently via mail order. I purchased the young trees recently because I have a 7' Sango Kaku that I believe is infected with Pseudomonas. I decided that, in the event I end up watching my tree suffer a slow death, I'll comfort myself by taking care of some younger Acers that may one day earn the job of replacing my Sango Kaku. Since I've ordered the trees, I have come to realize that there is a lot more to caring for them than I originally anticipated. There is an amazing amount of helpful information in this forum alone. I appreciate all the time everyone here has spent building such a large wealth of information, and hope to someday contribute some useful experiences of my own. As my brain is always in sponge mode, I've been trying to understand more and more about tree growth, container gardening, soils, etc. In the interest of furthering that understanding, I decided to select a candidate (victim) to move into the gritty mix. I'll likely be moving the rest into the 5-1-1 mix or something similar as was suggested. I am, however, a visual learner, so I decided the best way to learn my lesson was to subject one of these poor young trees to what I'll describe as a partial "repot". About 24 hours ago I moved the Trompenburg into a larger pot with gritty mix and a wick. I took it out of its current pot, and carefully removed around 75% of the soil from the root ball by repeatedly dunking it in a bucket of water and poking it away with a small screwdriver. The roots had done a pretty good job of filling up the original container. I didn't prune them, nor did I mess with them much other than to untangle them a bit. My hope was that by minimizing any damage to them, I might make this "repot" a bit more successful. I watered thoroughly then poured on another gallon of water that had some Mycorrhizae and superthrive mixed in. My plan is to root prune and do a full repot next year if the tree survives this ordeal. I plan on observing it and hopefully learning from this experience. I consider it a training exercise to prepare for the disaster scenario where I may some day be forced to repot a tree that is in leaf. Please let me know if you think there is something I should have done differently (given my fabricated disaster scenario). I've included some pictures below of the 6 trees: Trompenburg, Sister Ghost, Seiru, Olsen's Frosted Strawberry, Kogane Sakae, Japanese Sunrise. These were taken just a few minutes ago. Most of the trees are still stretching out after their exciting adventure with the fine men and women of the US postal service. Thanks again for all your help. -Chris...See Morejust bought a small Japanese maple..repot ?
Comments (2)I'm in WI. I lost a couple of these for various reasons. Plant it right away. Water weekly with a soaker hose until it's established. I also give mine a nice deep watering mid Nov before winter hits, at least until it's established. They like afternoon shade. My last one fried in hot afternoon sun. My fernleafs, marginally hardy here, get winter protection with a tarp wrapped around to protect from the winds. My neighbor buries his newbie under the snow when he can. Don't fertilize at planting time. Some will say that you should never have to fertilize....I'll let the experts chime in. But, I have read that they tend to like acidic soil/fertilizer....See Moreherman_neutics
15 years agolast modified: 9 years agotakeaphoto
15 years agolast modified: 9 years agotapla (mid-Michigan, USDA z5b-6a)
15 years agolast modified: 9 years agoherman_neutics
15 years agolast modified: 9 years agodawgie
15 years agolast modified: 9 years agoherman_neutics
15 years agolast modified: 9 years agotapla (mid-Michigan, USDA z5b-6a)
14 years agolast modified: 9 years agotakeaphoto
14 years agolast modified: 9 years agobotann
14 years agolast modified: 9 years agodeep___roots
14 years agolast modified: 9 years agokaitain4
14 years agolast modified: 9 years agotapla (mid-Michigan, USDA z5b-6a)
14 years agolast modified: 9 years agokaitain4
14 years agolast modified: 9 years ago
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tapla (mid-Michigan, USDA z5b-6a)