This was growing in the same grow box right next to the trident up until a year ago.
https://www.bonsainut.com/threads/field-grown-elm-2.53755/#post-931226
Just dug this out after about 5-7 years in a grow box. Root work was done prior to going it with a flat cut so that all roots extend from the base at a similar level. The trunk is 5 inches at 5 inches above the soil and has a very nice nebari flare that will be slowly exposed. Will need some...
No need to do cuttings with a nearly 100% germination rate. I'd scout out some local cork oaks and keep an eye on them through summer for acorns. I'm certain that you can find local access to some, I have several here in San Jose that drop 1000s of acorns that I collect from in late summer and...
Had this growing in a raised bed for the past five years. Cut down the top last year and pulled it out of the ground yesterday for the next part of its journey in a training box. Better start saving now for the pot, it is going to be a pricy one.
Both of these made their way into show pots last year.
https://www.bonsainut.com/threads/cork-bark-oak.17343/#post-277693
https://www.bonsainut.com/threads/cork-oak.4390/#post-250317
Try a local rock yard. I've been able to find 1/4 inch lava at more than a few down here in the South bay, not that it helps you much but I'm betting that if you call a few in your area you will be able to find some. I picked up a 40 lb sack for $4 a few years back at Mountain View Garden...
This budded back at the nodes, the spaces in between the buds are the nodes. This is a good read that you can educate yourself with.
https://www.bonsainut.com/threads/trident-maple-management.19796/
Cork oaks are endemic to mediterranean regions and do not like cold snaps. You should see one of Walter Pall's really nice Cork oaks that lost most of its branches due to a cold snap and set it back several years. I have more than a few nice cork oaks that I'm careful with and bring in if we...