Temmin Wexley (pictured) was given hai-ka flower garlands at his father's funeral.
By the time of the Imperial Era on Akiva, the flowers were sometimes made into garlands as an Akivan funeral tradition. While visiting his former boyfriend's apartment on the Core Worlds planet Chandrila in 5 ABY, the former Imperial loyalty officer Sinjir Rath Velus noticed the residence's lack of decor, thinking about how he preferred splashes of color such as a bouquet of hai-ka flowers or a cerulean octo-fish tank. Not long after, hai-ka flower garlands were made for the funeral of the Akivan Brentin Lore Wexley on Akiva, some of which were distributed to the man's son, the New Republic operative Temmin Wexley. During the event's procession, Temmin reflected on the flowers' physical traits and their resemblance to a firebird's tail feathers.
During the New Republic Era, the Sith Eternal operative Kiza began collecting an army of battle droids in her home core ship, acting under the dark side's influence due to wearing the mask of the Sith Lord Exim Panshard. In 21 ABY, Kiza began preparing several of the seeker droids for use by activating a furnace, reflecting that the furnace's slotted shielding opened like the petals of a hai-ka flower.
Hai-ka flowers first appeared in Aftermath: Empire's End, a 2017 novel written by Chuck Wendig as the third installment in Star Wars: The Aftermath Trilogy.