if you have a solid box spring, Use a Wrap. nice clean finish. I have them in black.

but will still see all the support bars.I have two single box springs side by side.

I just place a fitted sheet over the box spring.

I will still see all the support bars as you see in the photo. There is already a white cover over the box springs.

Use a patterned fitted sheet on the box spring that complements the bedding and one size up coverlet, bedspread or comforter.

Another option, if feasible and the side railing looks fine.

If you don't want to see the two black metal support bars, it will have to have a bedskirt. If you can get used to seeing the two black support bars, use black fitted sheets to cover the box springs. Try removing the bedskirt for a month or two to see how you like the look.

Maureen unfortunately there isnt anything bigger than cal king at 110 in. wide. The boxspring sits low as you see in the photo. Its just that Im in love with a comforter set thats taupe and cream colored but it doesnt come with a skirt and its going to be hard to match.

I need to see the space with the bed in it. You can have a comforter made any size I actully much prefer coverlets but I need to see your bed . With anything you decide the cornes will need to be split to allow the supports to be hidden .

What do u mean by drop cloths? Photo? As for getting custom, its nit in the budget. Cal king is biggest. Would have got a bedspread for a solid look that reached the floor. Doing soft furnishings first than painting, area rug, etc

This is the set you're in love with? Yes? I see no issue with simply using a box spring cover in ivory matelasse. They're widely available. The "support rails? They're basically same fnish as the bed. You're making WHOO from no whoo. Worrying on match perfection "sets", when it isn't necessary, or even desirable!

Here you go........ stop fretting. Ivory, Cal King Every complete bed has side rails. : )

https://www.homedepot.com/p/The-Company-Store-Madelyn-Matelasse-Cotton-Ivory-California-King-Box-Spring-Cover-GP87-CK-IVORY/307595081

JAN MOYER kathleen MK no, that is my old comforter and rug. getting all new and freshening up the room. I will probably put window panels up to the ceiling as I have only 8' and would like to make it look higher. Will make it in a mushroom taupe color scheme. TY

"getting all new bedding....."

So ? Post the new. The link, a picture. Either way? Your question was the dust ruffle, and an option. I gave you one very logical answer. You begin with the bed, and where you hang or mount curtains, is for this moment....irrelevant?

As are the side rails to the bed. There IS no need to hide them!!

https://www.homedepot.com/p/The-Company-Store-Madelyn-Matelasse-Cotton-Ivory-California-King-Box-Spring-Cover-GP87-CK-IVORY/307595081

There are others, similar onllne. I will add.......With taupe, with mushroom,,,,, WHITE is the ultimate brightener. In sheets, in a coverlet, in anything. Don't believe it? Check out RH modern.

Yes it is. The comforter has cream accenting with the mushroom so its not super white but is definitely a brightener... and I like that its monochromatic so I can easily change up the color scheme with accessories. Ill see how the bed looks without any bed skirt. I can always add one later on. thanks so much.

Pottery barn has split corner bed skirts in cream.

Buy an extra bottom sheet via a set of INEXPENSIVE cal king sheets. put it over the box springs... : )

You won't need the "ruffle" unless you miss the look of one,