A "spring bouquet" refers to a collection of flowers that are typically gathered together in a pleasing arrangement during the spring season. Full definition
I have been working on photos of flowers, buying spring bouquets at the store, and trying to put some SPRING back into the farm... today we are getting 12 inches of snow... I have to wait a few more weeks until I am outside, planting and tilling... I can't wait. (hookedonhouses.net)
The equivalent of wearing a pretty spring bouquet under your clothes... with an added bonus: The bra is convertible. (redbookmag.com)
Markle's spring bouquet featured her favorite flowers, forget - me - nots, among scented sweet peas and sprigs of myrtle. (yahoo.com)