I'm sleeping under another Grandmother's Flower Garden that's about the same age as yours right now. Mine just has a single row of yellow hexes between the flowers. Yours is the fancy version. Mine is pretty tattered but it's so soft and comfortable that it's also my favorite quilt in the house. I'll retire it after I make a new quilt to fit the bed.
You have a great find there, enjoy it. Textiles don't last forever and there's worse fates for quilts than to be used completely up.
Rodney