Your blocks are gorgeous. If you alternate them with simple 2-color hourglass blocks, they will appear to be framed and set on point, like in this quilt:
http://www.quiltingboard.com/main-f1...e-t245762.html

That's what I'd do with those gorgeous blocks, to make them look special.

Consider setting them on point with alternating green or white blocks. Or sash the flower blocks and alternating white blocks with green.

Great suggestions. May I point out that there is no such thing as fabric too wild for a quilt? Just decide what use of the fabric will you enjoy having the most.

I would go with sashing. If you don't want a quilt this would make a fabulous wallhanging.

I think it should be a quilt. Beautiful blocks. A dark green or black sashing will tie it all together. If you have some of the original fabric maybe a border? With the sashing color repeated as the binding.

Those are gorgeous blocks. How about a lime green or one of the lighter shades of green in the mix? Maybe as the setting triangles and I found in doing my own bright quilt, that the wrong color of green as sashing really diminishes the vibrancy of the colors. Black is a great choice as well and lets the colors shine.

Some of the ideas already given, fit with what I did with my 4PP.
I didn't like the blocky-ness of the conventional setting, so went with on point and then continued on.
Here's a picture of my 4PP flimsy. It's on my black design wall, so you can barely see the outside border, which is a black with a gold metallic scroll design of sorts.
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Darker colored sashing as others have said.

I think I thin black sashing would be very pretty. Your blocks are gorgeous

Awwwww beautiful!!!