My vote: use the floral. It's big enough to not take away from the center. In my humble opinion, the green makes it look a bit dated. What a nice gift!

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*** DH is wrong. Floral will work well.
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My vote would be the green with pink cornerstones to keep it light. If it works a narrow border of that yellow, then the green as it sets off the animals in the quilt. Love the floral but would prefer it on back. Just my taste......

I vote for the green border on the front and floral on the back and that will make it reversible. Win-win

I really like the floral and adds a lot of interest. I think green piping would also be nice and the floral to bind it. Perhaps you might consider a narrower floral border. If you need the size shown, maybe use an inner border of the background fabric. That would make it float.

I would go with green or yellow borders and bind with the floral.

I love that floral print and would definitely use it. Maybe put a narrow white border first, to give more emphasis to the blocks, and then I think the floral will look great.

I like the flower border. I would use the green for the back.
Sue

If you do use the floral print for a border - be aware of where the print falls as it goes around the four sides.

I am thinking you might need/want to treat it like a directional/stripe fabric.

I would put a narrow green border between the top and the floral. That way it wouldn't call so much attention to the border. Very pretty.