I'm thinking about starting a bunch of variegated Chinotto on flying dragon as a bonsai project this spring.

I worked for a nursery many years ago that grew a lot of bonsai. Azalea and Elm were popular and easy to grow, they also did a few tropical's. Keeping them in a small shallow container, fertilize only as needed, training the limbs, and pruning continuously is about all there is to it. Chinotto would be a challenge but worth a try. It takes several years to get some size on the trunk to get it perportional. Keeping a small canopy and getting a new flush would be the most difficult part for citrus.

Yes, but the chinotto is very slow growing with small densely packed leaves.

I kept that in mind but the fact that it is an evergreen makes it more difficult.If the leaves get damaged in the process of training the limbs they will look bad. Citrus is not like Elm, it dont grow a new flush of tiny leaves back every time you prune it. JMHO

I guess I'll just have to try it.

Laaz,
Your question about Citrus Bonsai brings up something that I’ve been thinking of for a while.
First, I wonder if anyone has access to a citrus Witches Broom. http://en.wikipedia.org/wiki/Witch%27s_broom
Next, could you graft a limb from a Citrus Witches Broom to a rootstock. You have a dwarf citrus.
Then you can be more creative. After the WB scion takes, cut the WB scion short and graft on any citrus that you like. A Chinotto would work well.
Then you would have a Dwarf Citrus bonsai without the years of training.
If you do a search for WB you will find a guy in Europe that has pic of him finding and harvesting WBs. He grafts them to make instant dwarf trees for his yard.
If you search bonsai you will see some creative root grafting to enhance the look of the trees trunk.
I’ve killed a lot of bonsais over the years. Here’s something to think about;
Most bonsai are from deciduous trees. They have to be kept out side during the winter. You will need several bonsai if you want to display them. You keep one it you house for a day and return it out side. Then bring in another one and so on. This keeps them from going into shock.
Most people buy one and wonder why it dies after keeping it in the house for several weeks.
For citrus it would most likely be Winter Leaf Drop that kills it.
Another problem is the small containers. If you go on vacation or forget for a few days they can dry up and die. Even if they are over a hundred years old.

But it can be really rewarding if you have the dedication of Mr. Miyagi in the “Karate Kid”movie .

That looks a lot like Mistletoe, which is very common here.

Hmmm, did you ever venture further with this Laaz?

Reason I ask is that I spent a lot of time as a kid learning about and experimenting with bonsai. This is certainly possible. Tropical plants aren't as easy to train though, yet neither are pines. I guess it depends on how much concern you have for the aesthetic properties of bonsai, proportions and shaping and design and all of that? Takes time to develop...

Not yet, this summer as I didn't have much FD that was graft-able.

I have a couple of books on Bonsai. Both have pictures of Citrus trees that have been trained as Bonsai. One has a pic of a Meyer Lemon. The other has several including a Calamondin.

Grab a copy of this:

http://www.etsy.com/listing/129394725/bonsai-culture-and-care-of-miniature?utm_source=google&utm_medium=product_listing_promoted&utm_campaign=vintage_low&gclid=CKv-y4HHi7cCFcuj4AodbQgACQ

Knowing your grafting and propogating skills, I would think you would be pretty good at it.