I've never seen his sole look like this, It his left front.

Looks like some sort of Infection at the toe. His bars are folded over and looks like it wants to exfoliate.

Yeah looks like pretty major seedy hole at the toe, looks seedy at quarters, overgrown bars.

That hole is where abscess was dug out, earlier this summer. His shoes/pads were just pulled off wed.
Not much was done he tends to get sore,after shoes get pulled off. Farrier will be back in two weeks to trim.

What's best treatment for seedy toe?

I'd say the others are possibly correct, but also we might just be seeing dirt that looks odd in a photograph.

The sole looks like it is exfoliating, I don't think the bars are visible enough to comment. It looks like the toe might have been brought back, which could mean the improving hoof form means you're seeing more sole than you're used to. A change in weather will make retained sole begin to come out and cause the cracking you see. Usually when the soil gets a bit softer or wetter after a dry period. Since there is separation around the edge, I would try seeing if the sole wants to come out with a hoof pick. If it does, you can help it exfoliate in order to prevent organisms from ending up under the loose, dead sole, causing thrush. The hoof might be ready for a trim if that sole does come out. Often the hoof walls appear flush with the sole, but then it will exfoliate and surprise, it's time to trim. I've had it happen where I trimmed my horses, the weather changed, sole came out, and I had to trim again a week later.

@gottatrot , there is in fact a hole that's from abscess almost 3 months ago. Never totally filled in again. I took hoof pick to sole and some came out.

Only one hoof has the cracking in sole. Right front is smooth,as are hind feet.

It was really wet then froze and now 2 inches of snow. Been an extremely wet summer/fall. Possibly a major winter storm tomorrow night, through Sunday afternoon. We are in winter storm watch

I have found what worked for me was soaking in White Lightning made by Grand Circuit.
Followed mixing directions after reading the entire instructional pamphlet first...
2 boots, 1 for soaking then 1 for fumigating allowed me to do feet faster and a lot less mess.
I did one treatment and my farrier was overjoyed 2 weeks later when he returned at the difference {positive} he saw.
A fresh trim prior to soaking so pores are open, was also what I/we did...it worked!

My horse had signs of separation, possible starting issues and we were treating before we had major issues...
My farrier told me to get this product to soak...
I also found they make a gel form and purchased that too.
Due to weather conditions that can go from hot/dry to very wet/hot seemingly overnight my horses feet soften, harden and soften allowing a cracking at the toe...
I use the gel to treat the toe area so we not allow organisms to flourish and make a home environment...

As for the sole of the hoof...
No comment from me...
There are qualified here who see a lot more than I do and can offer what to do or don't...
I will offer...hope all is OK.

Be safe in that impending storm.
Batten down, prepare for the accumulation, the not being able to get to them easily...
And hang in there...spring is on the way.
....

Thinking I'm going to get the white lighting gel. Not sure soaking would work in below freezing weather.

Apparently the foot needs wrapped after treating with it?? Does it need opened up so it can be treated?
It's not very deep ,holes barely below soles edge. It's been like that for months,was same size last time feet were done, 5 weeks ago.

Haven't ordered anything yet,have nothing to wrap with. Used all my wrap supply when he abscessed. Feed store had thrush buster nothing else.

All I have is no thrush powder,can put that in the hole of his foot.

He'll be in barn till Sunday afternoon. Due to snow storm, strong winds an heavy snow, coming in tonight. Hopefully power doesn't go out.

Of course I prefer vet wrap when needing to wrap a hoof but in a pinch you can use gauze as a protective layer before duct taping. That's what was used back in the old days before vet wrap came on the scene.

So hole is deeper then I thought. A few pics I took tonight. Hoof picture showing how far hoof pick goes into hole in hoof.

Pic of hoof pick with line showing how far in it went. Bottom edge of line is where sole was. Out of duct tape also it will be sometime next week ,before I'll be able to go anywhere.
Big storm is going to hit tonight, 16 inches of snow along with freezing rain snow mix. And strong winds to whip it around. Need to go bring in horses and close up barn here.

If I don't reply tomorrow chances are we lost our power.