July - Larkspur/Delphinium
Larkspur the annual or Delphinium the perennial symbolize love, affection and good fortune depending on the color.
Native to the northern hemisphere the flowers can be yellow, purple, blue, white or pink.
I like to use the blue in summery, beachy type arrangements as I feel it adds a breezy blue sky feel to the arrangement.
By Darorcilmir - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=20565438