Herter has done this and sells such ( BTW I like and respect John alot) as do several other east coast nurseries and ...BUT I think in most cases these multi grafted "multi" cultivars look hideous. ( I've seen some large full grown ones that would make ya puke!! IMHO)..and are a travesty ... similar cultivars types ( color and leaf style shape atc) "can" IMHO look "ok" but you really have to have an artistic eye. It is a GIMMICK and for most of us purists... not something we'd ( I ) be interested in ...David

Now that I think about it I can see how it could be quite ugly. Especially varieties that have different habits and totally different qualities (although I wouldn't put something like a butterfly with an inaba shidare if someone held a gun to my head, ICK!) I guess I'm just a contrasting color freak, and I envisioned tufts of green and purple changing to yellow and red. I'm glad you posted this, I hadn't really thought about the downside.

i think it will look great if you stick with similar species and do some nice pruning. meaning upright varieties only or cascading trees only not mixing and matching between the two.it is something i plan on doing right now my focus has been on growing the trees from seed.