What do you consider to be "dwarf'? Lions head maple, Acer palmatum 'Shishigashira' is a small growing upright with interesting, sort of curled bright green leaves that would be a great contrast to the red of the Crimson Queen. Also gets great fall color.

A couple of other dwarf forms to consider are 'Mikawa Yatsubusa' and 'Hupp's Dwarf'.

I would consider something dwarf that's slow growing, and maybe reaches around 10 foot in 10 years. I also think I want something that grows more narrow. I actually own a Lions head and Mikawa Yatsubusa. I have the Mikawa Yatsubusa in a container. I wasn't sure if this would be a good location for it. I know that it is slow growing, but wasn't sure how wide it would ultimately get, and also didn't know if the light would be enough. I had a Ryusen in similar conditions, and it didn't get good fall color, I moved it to the front yard, and it's doing great.

I believe these are all the Maples that I own, so if I do purchase a new one, I think I'd like to get something different. I like to collect them:

• Bloodgood
• Crimson Queen
• Red Dragon
• Inaba Shidare
• Twombly's Red Sentinal
• Autumn Moon
• Mikawa Yatsubusa
• Red Select
• Shishigashira
• Olsen's Frosted Strawberry
• Baldsmith

I believe that is all that I own.

Nice selection!! I would seriously consider the Hupps Dwarf. Similar in habit to the MY but yet still distinct and I believe it has a narrower form - at least mine does. Another possibility is Fjellheim, which is a dwarf coral bark JM. Bright, grassy-green leaves (you need more greens!) and a compact and somewhat narrow habit, usually described as "vase shaped". And the red bark is always a great winter time draw!

I forgot to add that I have a Villa Taranto, Tamukeyama, and Ryusen too. Lol

And I think the Hupps Dwarf might be what I need to go with. I almost ordered one with my last Conifer Kingdom order. It's one that I'm interested in for sure. I'm going to research the Fjellheim now.

Are the Fjellheim as likely to disease like the coral bark maple? I had one planted in partial shade, and it caught some kind of disease. (I forget which one it had).

Hupps Dwarf

Goshiki Kotohime

Ojishi

Hippy Fin Mo (not true dwarf but slow growing and very cool)

Saiho

"Are the Fjellheim as likely to disease like the coral bark maple?"

Unfortunately, yes. For some reason - a genetic abnormality or whatever - JM's with red or brightly colored (orange, fading to gold) bark tend to be extremely prone to bacterial blight, Pseudomonas syringae. You see this routinely with Sango Kaku, Fjellheim, Japanese Sunrise, Beni Kawa, and Winter Flame, especially if exposed to harsh winter conditions - there seems to be some sort of correlation with exposure to cold winter temps and the development of this blight. But if in a suitable climate and/or a protected area, just growing one of these varieties is no guarantee that it will fall prey to this pathogen. I grew a stunning coral bark (Sango Kaku) in my old garden for many years without any signs of any problems and it is still there and going strong 25 years after planting.

FWIW, 'Corallinum' also seems to be very prone to pseudomonas as well.

I got 'Bihou' to stop dwindling away during the dormant season by fertilizing it.

I'd plant a bright green Dissectum Group maple to go with red ones.