I have not noticed this with my mouse ears, but yours looks perfectly fine there. My advice is just leave it.

It could be possible they had a bit of winter-heave as their root masses are so small. Your soil may be that nice loose stuff so heave is almost expected for a plant so small. Some heucheras do that too and I push them back down. I have a habit of planting my very smalls and minis slightly higher, whether in ground or pot. It promotes vigour and there is less chance of crown rot.

If they don't look abnormally high you can leave them.They look like they are very happy where they are. However, keep the moss and mulch in far proximity of their little crowns. Mulch for minis should not invade the canopy of the leaves, just mulch the perimeter around them.

That is a sweet and pretty bed you've created. I've divided my Blue Mouse Ears and hope to showcase it is some fashion as well this year. :-)

Karen, is that Snow Mouse and Pure Heart in front row?
I lost Pure Heart over the winter to squirrels digging, but little Snow Mouse is growing nicely.

Very colorful bed. The heuchera looks huge compared to your meeses.

I'll second the idea of frost heave. I just replanted two of mine today due to this issue. One of the two (Giantland Sunny') I fear may have been killed by it. It was just planted in September or October. So it was not hardly established. The crown was pretty dry and only three strong roots where keeping it attached to the ground. I'm still keeping up some hope. The roots that where not exposed where white and healthy. All my other mice are just starting to pop up now.

Here's a picture of one of the mice. The crown is above the soil with just a bit of root. I took this picture this evening. Is it too far above or should I add a bit more soil around it? Or plant it a bit deeper?

In the front row I have left to right: Royal Mouse Ears, Mighty Mouse, Frosted Mouse Ears. Second row: Blue Mouse Ears, Snow Mouse, Pure Heart, Holy Mouse Ears, Cat and Mouse, and Mouse Tracks. Third row: Blue Baron, Coconut Custard, Green Mouse Ears. The fern is a Japanese painted and the heucherella is Sweet Tea. The astilbe looking thing in the front right is a mini goatsbeard called Misty Lace.

Karen

Don't worry about it. If your mice wanted their roots to be below they would put them there. Since you don't have frost heave on the others, it probably isn't that. Don't worry about it. I had a Striptease that put up high roots. I covered them and the plant died. Just make sure the crown is at surface level, then let the roots do their own thing. Don't worry about it.

-Babka

Okay, I'll leave them alone. The other minis I have in the ground don't do this, only the mice, and they do this every year, and every year I replant them back in the ground. So now I'm figuring, if they keep doing this, maybe this is the position they like to be at. They are all alive with pips swelling, so I'll just let them do their thing. Thanks.

Karen

I only have Blue Mouse Ears,but it is always standing up like it was on stilts,but it's always grown that way. Phil